Is Nogales Tap Water Safe to Drink?

Can You Drink Tap Water in Nogales?

Yes, Nogales's tap water is generally considered safe to drink as Nogales has no active health based violations of the Safe Drinking Water Act (SDWA) that we are aware of. Other factors such as lead piping in a home, or low levels of pollutants on immunocompromised individuals, should also be considered, however. To find more recent info we might have, you can check out our boil water notice page or the city's water provider website.

According the EPA’s ECHO database, from April 30, 2019 to June 30, 2022, Nogales's water utility, City of Nogales, had 4 non-health-based violations of the Safe Drinking Water Act. For more details on the violations, please see our violation history section below. The last violation for Nogales was resolved on Dec. 31, 2020. This assessment is based on the City of Nogales water system, other water systems in the city may have different results.

While tap water that meets the EPA health guidelines generally won’t make you sick to your stomach, it can still contain regulated and unregulated contaminants present in trace amounts that could potentially cause health issues over the long-run. These trace contaminants may also impact immunocompromised and vulnerable individuals.

The EPA is reviewing if it’s current regulations around pollutant levels in tap water are strict enough, and the health dangers posed by unregulated pollutants, like PFAS.

Nogales Tap Water Safe Drinking Water Act Violation History - Prior 10 Years

Below is a ten year history of violations for the water system named City of Nogales for Nogales in Arizona. For more details please see the "What do these Violations Mean?" section below.

For the compliance period beginning Feb. 13, 2020, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Public Notification Violation for NPDWR Violation which falls into the Other rule code group, and the Public Notice Rule rule code family for the following contaminant code: Public Notice.

For the compliance period beginning Jan. 1, 2020, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Reporting Violation, more specifically, the violation code was Report Sample Result/Fail Monitor (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

From Aug. 1, 2019 to Oct. 31, 2019, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: Total Haloacetic Acids (HAA5), TTHM.

From April 1, 2019 to June 30, 2019, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Arsenic.

From Aug. 1, 2018 to Oct. 31, 2018, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: TTHM, Total Haloacetic Acids (HAA5).

For the compliance period beginning July 1, 2018, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From July 1, 2018 to Sept. 30, 2018, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Arsenic.

From Jan. 1, 2018 to Dec. 31, 2020, Nogales had 31 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Nickel, Fluoride, Chromium, Barium, CYANIDE, Cadmium, Nickel, CYANIDE, Beryllium, Total, Selenium, Cadmium, Antimony, Total, Thallium, Total, Barium, Selenium, Mercury, Thallium, Total, CYANIDE, Chromium, Barium, Beryllium, Total, Chromium, Cadmium, Antimony, Total, Thallium, Total, Beryllium, Total, Mercury, Mercury, Antimony, Total, Nickel, Selenium.

From Jan. 1, 2018 to Dec. 31, 2020, Nogales had 5 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Radionuclides rule code family for the following contaminant codes: Combined Uranium, Combined Radium (-226 and -228), Radium-226, Radium-228, Gross Alpha, Excl. Radon and U.

From Jan. 1, 2018 to Dec. 31, 2020, Nogales had 88 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Synthetic Organic Chemicals rule code family for the following contaminant codes: BHC-GAMMA, Methoxychlor, Dalapon, Diquat, Endothall, Glyphosate, Simazine, Dinoseb, Hexachlorocyclopentadiene, Carbofuran, Atrazine, 2,3,7,8-TCDD, Heptachlor, Heptachlor epoxide, 2,4-D, HEXACHLOROBENZENE, Benzo(a)pyrene, 1,2-DIBROMO-3-CHLOROPROPANE, ETHYLENE DIBROMIDE, Chlordane, Endrin, BHC-GAMMA, Methoxychlor, Dalapon, Endothall, Di(2-ethylhexyl) adipate, OXAMYL, Di(2-ethylhexyl) phthalate, Picloram, Dinoseb, Hexachlorocyclopentadiene, Atrazine, LASSO, Heptachlor, Heptachlor epoxide, 2,4-D, ETHYLENE DIBROMIDE, Chlordane, Endrin, Methoxychlor, Diquat, OXAMYL, Simazine, Picloram, Dinoseb, Hexachlorocyclopentadiene, LASSO, 2,3,7,8-TCDD, Heptachlor, Heptachlor epoxide, 2,4-D, 2,4,5-TP, HEXACHLOROBENZENE, Pentachlorophenol, ETHYLENE DIBROMIDE, Chlordane, Toxaphene, Benzo(a)pyrene, Simazine, Picloram, OXAMYL, 2,3,7,8-TCDD, 2,4,5-TP, Carbofuran, Pentachlorophenol, Di(2-ethylhexyl) phthalate, 2,4,5-TP, Pentachlorophenol, HEXACHLOROBENZENE, Glyphosate, Dalapon, Diquat, Di(2-ethylhexyl) phthalate, 2,4-D, Endrin, LASSO, Toxaphene, Atrazine, Di(2-ethylhexyl) adipate, 1,2-DIBROMO-3-CHLOROPROPANE, Endothall, Toxaphene, BHC-GAMMA, 1,2-DIBROMO-3-CHLOROPROPANE, Glyphosate, Di(2-ethylhexyl) adipate, Carbofuran, Benzo(a)pyrene.

From Jan. 1, 2018 to Dec. 31, 2020, Nogales had 21 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Volatile Organic Chemicals rule code family for the following contaminant codes: 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, Xylenes, Total, o-Dichlorobenzene, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon tetrachloride, 1,2-Dichloropropane, Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, CHLOROBENZENE, Benzene, Toluene, Ethylbenzene, 1,1-Dichloroethylene, p-Dichlorobenzene, Vinyl chloride, DICHLOROMETHANE, Styrene.

From Jan. 1, 2018 to Dec. 31, 2020, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic.

From Jan. 1, 2018 to Dec. 31, 2018, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Nitrate, Nitrate.

For the compliance period beginning July 1, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Reporting Violation, more specifically, the violation code was Report Sample Result/Fail Monitor (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

For the compliance period beginning July 1, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

For the compliance period beginning April 1, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Reporting Violation, more specifically, the violation code was Report Sample Result/Fail Monitor (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

From April 1, 2017 to June 30, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Arsenic.

For the compliance period beginning March 1, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Reporting Violation, more specifically, the violation code was Report Sample Result/Fail Monitor (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

From Jan. 1, 2017 to Jan. 31, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring Violation, more specifically, the violation code was Monitoring, Routine (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

From Jan. 1, 2017 to March 31, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From Jan. 1, 2017 to March 31, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Arsenic.

From Jan. 1, 2017 to Dec. 31, 2017, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Nitrate.

For the compliance period beginning Nov. 11, 2016, Nogales had 1 health-based Safe Drinking Water Act violation with the violation category being Treatment Technique Violation, more specifically, the violation code was Treatment Technique, Level 1 Assessment (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

For the compliance period beginning Nov. 10, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Reporting Violation, more specifically, the violation code was Reporting, Assessment Forms (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

From Nov. 1, 2016 to Nov. 30, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring Violation, more specifically, the violation code was Monitoring, Routine (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

From Nov. 1, 2016 to Jan. 31, 2017, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: TTHM, Total Haloacetic Acids (HAA5).

For the compliance period beginning Oct. 7, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Source Water (GWR) which falls into the Microbials rule code group, and the Groundwater Rule rule code family for the following contaminant code: E. COLI.

For the compliance period beginning Oct. 1, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Inadequate Reporting which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From July 1, 2016 to Sept. 30, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Arsenic.

From July 1, 2016 to Sept. 30, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

For the compliance period beginning July 1, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From May 1, 2016 to July 31, 2016, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: TTHM, Total Haloacetic Acids (HAA5).

From April 1, 2016 to June 30, 2016, Nogales had 3 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic, Arsenic.

From March 1, 2016 to March 31, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Routine Minor (TCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Coliform (TCR).

From Feb. 1, 2016 to Feb. 29, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Routine Major (TCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Coliform (TCR).

From Jan. 1, 2016 to Jan. 31, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Routine Major (TCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Coliform (TCR).

From Jan. 1, 2016 to March 31, 2016, Nogales had 3 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic, Arsenic.

From Jan. 1, 2016 to March 31, 2016, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From Jan. 1, 2016 to Dec. 31, 2016, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Nitrate, Nitrate.

From Nov. 1, 2015 to Nov. 30, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Routine Major (TCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Coliform (TCR).

From Oct. 1, 2015 to Dec. 31, 2015, Nogales had 3 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic, Arsenic.

From Oct. 1, 2015 to Dec. 31, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

For the compliance period beginning Oct. 1, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Inadequate Reporting which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

For the compliance period beginning Oct. 1, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Follow-up Or Routine LCR Tap M/R which falls into the Chemicals rule code group, and the Lead and Copper Rule rule code family for the following contaminant code: Lead and Copper Rule.

From July 1, 2015 to Sept. 30, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

For the compliance period beginning July 1, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From July 1, 2015 to Sept. 30, 2015, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic.

From April 1, 2015 to June 30, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From April 1, 2015 to June 30, 2015, Nogales had 3 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic, Arsenic.

From Jan. 1, 2015 to March 31, 2015, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From Jan. 1, 2015 to Dec. 31, 2015, Nogales had 6 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Nitrate, Nitrate, Nitrate, Nitrate, Nitrate, Nitrate.

From Jan. 1, 2015 to Dec. 31, 2015, Nogales had 21 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Volatile Organic Chemicals rule code family for the following contaminant codes: 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, Xylenes, Total, o-Dichlorobenzene, Vinyl chloride, 1,1-Dichloroethylene, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon tetrachloride, 1,2-Dichloropropane, Trichloroethylene, Tetrachloroethylene, CHLOROBENZENE, Benzene, Toluene, Styrene, 1,1,2-Trichloroethane, p-Dichlorobenzene, Ethylbenzene, DICHLOROMETHANE.

From Jan. 1, 2015 to Dec. 31, 2017, Nogales had 66 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Antimony, Total, Cadmium, Chromium, Beryllium, Total, Selenium, Mercury, Cadmium, Fluoride, Chromium, Selenium, CYANIDE, Cadmium, Fluoride, Thallium, Total, Beryllium, Total, Nickel, Mercury, Barium, CYANIDE, Antimony, Total, Cadmium, Fluoride, Chromium, Thallium, Total, Nickel, Selenium, Barium, Barium, Cadmium, Chromium, Fluoride, Nickel, Beryllium, Total, Thallium, Total, Selenium, Barium, Cadmium, Chromium, Mercury, Nickel, Antimony, Total, Beryllium, Total, Thallium, Total, Selenium, Antimony, Total, Mercury, Fluoride, CYANIDE, Fluoride, Nickel, CYANIDE, Barium, CYANIDE, Mercury, Barium, Thallium, Total, Beryllium, Total, Antimony, Total, Selenium, Mercury, Beryllium, Total, Antimony, Total, CYANIDE, Chromium, Thallium, Total, Nickel.

From Jan. 1, 2015 to Dec. 31, 2017, Nogales had 10 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Radionuclides rule code family for the following contaminant codes: Radium-226, Gross Alpha, Excl. Radon and U, Combined Uranium, Radium-226, Radium-228, Gross Alpha, Excl. Radon and U, Combined Radium (-226 and -228), Radium-228, Combined Uranium, Combined Radium (-226 and -228).

From Jan. 1, 2015 to Dec. 31, 2017, Nogales had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic.

From Jan. 1, 2015 to Dec. 31, 2017, Nogales had 84 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Volatile Organic Chemicals rule code family for the following contaminant codes: cis-1,2-Dichloroethylene, Xylenes, Total, DICHLOROMETHANE, o-Dichlorobenzene, p-Dichlorobenzene, Vinyl chloride, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,1,1-Trichloroethane, Carbon tetrachloride, 1,2-Dichloropropane, Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, CHLOROBENZENE, Benzene, Toluene, Ethylbenzene, Styrene, cis-1,2-Dichloroethylene, DICHLOROMETHANE, o-Dichlorobenzene, Vinyl chloride, 1,1-Dichloroethylene, 1,2-Dichloroethane, Carbon tetrachloride, 1,2-Dichloropropane, Trichloroethylene, Tetrachloroethylene, Benzene, Toluene, Styrene, 1,2,4-Trichlorobenzene, DICHLOROMETHANE, o-Dichlorobenzene, p-Dichlorobenzene, Vinyl chloride, 1,1-Dichloroethylene, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, Carbon tetrachloride, 1,2-Dichloropropane, Trichloroethylene, CHLOROBENZENE, Benzene, Toluene, Ethylbenzene, Styrene, 1,2,4-Trichlorobenzene, cis-1,2-Dichloroethylene, Xylenes, Total, trans-1,2-Dichloroethylene, 1,2-Dichloroethane, 1,2-Dichloropropane, Trichloroethylene, 1,1,2-Trichloroethane, Tetrachloroethylene, CHLOROBENZENE, Benzene, Toluene, Ethylbenzene, Styrene, Vinyl chloride, p-Dichlorobenzene, 1,1-Dichloroethylene, 1,1,1-Trichloroethane, Xylenes, Total, Xylenes, Total, 1,1-Dichloroethylene, 1,1,1-Trichloroethane, DICHLOROMETHANE, cis-1,2-Dichloroethylene, Carbon tetrachloride, Ethylbenzene, 1,1,1-Trichloroethane, CHLOROBENZENE, Tetrachloroethylene, 1,2,4-Trichlorobenzene, 1,1,2-Trichloroethane, trans-1,2-Dichloroethylene, 1,1,2-Trichloroethane, p-Dichlorobenzene, o-Dichlorobenzene, 1,2,4-Trichlorobenzene.

From Jan. 1, 2015 to Dec. 31, 2017, Nogales had 145 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Synthetic Organic Chemicals rule code family for the following contaminant codes: BHC-GAMMA, Methoxychlor, Toxaphene, Dalapon, Diquat, Endothall, OXAMYL, Simazine, Di(2-ethylhexyl) phthalate, Picloram, Dinoseb, Hexachlorocyclopentadiene, Atrazine, LASSO, Heptachlor, 2,4,5-TP, HEXACHLOROBENZENE, Benzo(a)pyrene, Pentachlorophenol, 1,2-DIBROMO-3-CHLOROPROPANE, Chlordane, Endrin, BHC-GAMMA, Methoxychlor, Toxaphene, Dalapon, Diquat, Endothall, OXAMYL, Simazine, Di(2-ethylhexyl) phthalate, Picloram, Dinoseb, Carbofuran, Atrazine, LASSO, 2,3,7,8-TCDD, Heptachlor, Heptachlor epoxide, 2,4-D, 2,4,5-TP, HEXACHLOROBENZENE, Benzo(a)pyrene, Pentachlorophenol, 1,2-DIBROMO-3-CHLOROPROPANE, ETHYLENE DIBROMIDE, Chlordane, Endrin, Toxaphene, Dalapon, Endothall, Glyphosate, Di(2-ethylhexyl) adipate, OXAMYL, Simazine, Di(2-ethylhexyl) phthalate, Picloram, Dinoseb, Hexachlorocyclopentadiene, Atrazine, 2,3,7,8-TCDD, Heptachlor, 2,4-D, 2,4,5-TP, HEXACHLOROBENZENE, Benzo(a)pyrene, Pentachlorophenol, 1,2-DIBROMO-3-CHLOROPROPANE, ETHYLENE DIBROMIDE, Endrin, BHC-GAMMA, Methoxychlor, Toxaphene, Dalapon, Diquat, Endothall, Glyphosate, Simazine, Di(2-ethylhexyl) phthalate, Picloram, Dinoseb, Hexachlorocyclopentadiene, Carbofuran, LASSO, 2,3,7,8-TCDD, Heptachlor, Heptachlor epoxide, 2,4-D, 2,4,5-TP, HEXACHLOROBENZENE, Benzo(a)pyrene, Pentachlorophenol, 1,2-DIBROMO-3-CHLOROPROPANE, ETHYLENE DIBROMIDE, Chlordane, Dalapon, Endothall, Glyphosate, Di(2-ethylhexyl) adipate, Simazine, Picloram, Hexachlorocyclopentadiene, Carbofuran, Atrazine, LASSO, 2,3,7,8-TCDD, Heptachlor, 2,4,5-TP, HEXACHLOROBENZENE, Pentachlorophenol, 1,2-DIBROMO-3-CHLOROPROPANE, ETHYLENE DIBROMIDE, Chlordane, Toxaphene, 2,3,7,8-TCDD, Benzo(a)pyrene, OXAMYL, Di(2-ethylhexyl) adipate, LASSO, Endrin, BHC-GAMMA, Glyphosate, Methoxychlor, Heptachlor epoxide, Endrin, Carbofuran, 2,4-D, Diquat, Heptachlor epoxide, Diquat, Di(2-ethylhexyl) adipate, Glyphosate, Methoxychlor, OXAMYL, Hexachlorocyclopentadiene, 2,4-D, Atrazine, Di(2-ethylhexyl) adipate, BHC-GAMMA, Heptachlor epoxide, Chlordane, Dinoseb, Di(2-ethylhexyl) phthalate, Carbofuran, ETHYLENE DIBROMIDE.

From Jan. 1, 2015 to Dec. 31, 2020, Nogales had 5 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Radionuclides rule code family for the following contaminant codes: Gross Alpha, Excl. Radon and U, Combined Uranium, Combined Radium (-226 and -228), Radium-226, Radium-228.

For the compliance period beginning Nov. 6, 2014, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Source Water (GWR) which falls into the Microbials rule code group, and the Groundwater Rule rule code family for the following contaminant code: E. COLI.

From Oct. 1, 2014 to Dec. 31, 2014, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From Oct. 1, 2014 to Dec. 31, 2014, Nogales had 3 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic, Arsenic.

For the compliance period beginning July 1, 2014, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From July 1, 2014 to Sept. 30, 2014, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From July 1, 2014 to Sept. 30, 2014, Nogales had 3 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Regular which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant codes: Arsenic, Arsenic, Arsenic.

From Aug. 1, 2013 to Aug. 31, 2013, Nogales had 1 health-based Safe Drinking Water Act violation with the violation category being Maximum Contaminant Level Violation, more specifically, the violation code was Maximum Contaminant Level Violation, Monthly (TCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Coliform (TCR).

For the compliance period beginning July 1, 2013, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From July 1, 2013 to Sept. 30, 2013, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From Aug. 1, 2012 to Aug. 31, 2012, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Routine Minor (TCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Coliform (TCR).

For the compliance period beginning July 1, 2012, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Complete Failure to Report which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

From July 1, 2012 to Sept. 30, 2012, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: Chlorine.

From Jan. 1, 2012 to Dec. 31, 2020, Nogales had 1 health-based Safe Drinking Water Act violation with the violation category being Maximum Contaminant Level Violation, more specifically, the violation code was Maximum Contaminant Level Violation, Average which falls into the Chemicals rule code group, and the Inorganic Chemicals rule code family for the following contaminant code: Asbestos.

For the compliance period beginning Oct. 1, 2011, Nogales had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Consumer Confidence Report Inadequate Reporting which falls into the Other rule code group, and the Consumer Confidence Rule rule code family for the following contaminant code: Consumer Confidence Rule.

Is there Lead in Nogales Water?

Based on the EPA’s ECHO Database, 90% of the samples taken from the Nogales water system, City of Nogales, between sample start date and sample end date, were at or below, 0.0 mg/L of lead in Nogales water. This is 0% of the 0.015 mg/L action level. This means 10% of the samples taken from Nogales contained more lead.

While Nogales water testing may have found 0.0 mg/L of lead in its water, that does not mean your water source has the same amount. The amount of lead in water in a city can vary greatly from neighborhood to neighborhood, or even building to building. Many buildings, particularly older ones, have lead pipes or service lines which can be a source of contamination. To find out if your home has lead, we recommend getting you water tested.

No amount of lead in water is healthy, only less dangerous. As lead accumulates in our bodies over time, even exposure to relatively small amounts can have negative health effects. For more information, please check out our Lead FAQ page.

Are there PFAS in Nogales Tap Water?

Currently, testing tap water for PFAS isn’t mandated on a national level. We do have a list of military bases where there have been suspected or confirmed leaks. There appears to be at least one military base - Fort Huachuca - near Nogales with suspected leaks.

With many potential sources of PFAS in tap water across the US, the best information we currently have about which cities have PFAS in their water is this ewg map, which you can check to see if Nogales has been evaluated for yet.

Our stance is better safe than sorry, and that it makes sense to try to purify the tap water just in case.

Nogales SDWA Violation History Table - Prior 10 Years

What do these Violations Mean?

Safe Drinking Water Act Violations categories split into two groups, health based, and non-health based. Generally, health based violations are more serious, though non-health based violations can also be cause for concern.

Health Based Violations

1. Maximum contaminant levels (MCLs) - maximum allowed contaminant level was exceeded.
2. Maximum residual disinfectant levels (MRDLs) - maximum allowed disinfectant level was exceeded.
3. Other violations (Other) - the exact required process to reduce the amounts of contaminants in drinking water was not followed.

Non-Health Based Violations

1. Monitoring and reporting violations (MR, MON) - failure to conduct the required regular monitoring of drinking water quality, and/or to submit monitoring results on time.
2. Public notice violations (Other) - failure to immediately alert consumers if there is a serious problem with their drinking water that may pose a risk to public health.
3. Other violations (Other) - miscellaneous violations, such as failure to issue annual consumer confidence reports or maintain required records.

SDWA Table Key

Field	Description
Compliance Period	Dates of the compliance period.
Status	Current status of the violation. Resolved - The violation has at least one resolving enforcement action. In SDWIS, this indicates that either the system has returned to compliance from the violation, the rule that was violated was no longer applicable, or no further action was needed. Archived - The violation is not Resolved, but is more than five years past its compliance period end date. In keeping with the Enforcement Response Policy, the violation no longer contributes to the public water system's overall compliance status. Unresolved violations are also marked as Archived when a system ceases operations (becomes inactive). Addressed - The violation is not Resolved or Archived, and is addressed by one or more formal enforcement actions. Unaddressed - The violation is not Resolved or Archived, and has not been addressed by formal enforcement. show details
Health-Based?	Whether the violation is health based.
Category Code	The category of violation that is reported. TT - Treatment Technique Violation MRDL - Maximum Residual Disinfectant Level Other - Other Violation MCL - Maximum Contaminant Level Violation MR - Monitoring and Reporting MON - Monitoring Violation RPT - Reporting Violation show details
Code	A full description of violation codes can be accessed in the SDWA_REF_CODE_VALUES (CSV) table.
Contaminant Code	A code value that represents a contaminant for which a public water system has incurred a violation of a primary drinking water regulation.
Rule Code	Code for a National Drinking Water rule. 110 - Total Coliform Rule 121 - Surface Water Treatment Rule 122 - Long Term 1 Enhanced Surface Water Treatment Rule 123 - Long Term 2 Enhanced Surface Water Treatment Rule 130 - Filter Backwash Rule 140 - Ground Water Rule 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule 230 - Total Trihalomethanes 310 - Volatile Organic Chemicals 331 - Nitrates 332 - Arsenic 333 - Inorganic Chemicals 320 - Synthetic Organic Chemicals 340 - Radionuclides 350 - Lead and Copper Rule 410 - Public Notice Rule 420 - Consumer Confidence Rule 430 - Miscellaneous 500 - Not Regulated 111 - Revised Total Coliform Rule show details
Rule Group Code	Code that uniquely identifies a rule group. 120 - Surface Water Treatment Rules 130 - Filter Backwash Rule 140 - Groundwater Rule 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule 230 - Total Trihalomethanes 310 - Volatile Organic Chemicals 320 - Synthetic Organic Chemicals 330 - Inorganic Chemicals 340 - Radionuclides 350 - Lead and Copper Rule 400 - Other 500 - Not Regulated 110 - Total Coliform Rules 410 - Public Notice Rule 420 - Consumer Confidence Rule 430 - Miscellaneous show details
Rule Family Code	Code for rule family. 100 - Microbials 200 - Disinfectants and Disinfection Byproducts Rule 300 - Chemicals 400 - Other 500 - Not Regulated show details

For more clarification please visit the EPA's data dictionary.