Honolulu, HI

Is Honolulu County Tap Water Safe to Drink?

Last Update9:24 am, March 4, 2021

The estimated price of bottled water

$2.46 in USD (1.5-liter)

Can You Drink Tap Water in Honolulu County?

Yes, tap water is drinkable.

There was no general information available in WHO data about safely managed drinking water in Honolulu County. You may check the rate of travelers and residents of Hawaii water quality.

Honolulu Tap Water

Have you ever stopped to wonder just how clean is Honolulu tap water? When you stop to think about it, the answer is probably not a whole lot. If you live in some rural area, where water treatment plants are not even up and running, or if your tap is located in a heavily populated urban area, chances are that tap water may be contaminated with all manner of contaminants, including chlorine, which is one of the most common, harmful chemicals in our drinking supply. So you may ask, just how dangerous is chlorine for drinking?

Chlorine is known as one of the most common causes of cancer in the United States. Over the years, as people have grown increasingly aware of the dangers, they have sought alternatives to chloroform gas in their homes. In particular, they have been looking to replace the use of chloroform gas with a more natural alternative, like hydrogen peroxide. Unfortunately, while this solution has been available for quite some time, it was too costly for most homeowners to install. Fortunately, in the last few decades, home purification systems have become much more affordable.

Honolulu Water Safe to Drink

Honolulu has long been a destination that offers great weather, fun, culture, and of course, drinking water. However, the city has had its share of water problems in the past. In fact, many people have been concerned that their tap water is no longer safe to drink. The reason why this should be of great concern to you is that over a million people in the state visit the city every single day.

When you go to the city, there are a few different ways to ensure that your tap water remains safe and clean. The first thing that you can do is buy an expensive tap water filtration system that will purify the water that you drink, cook with, bathe in, and wash your clothes in. This way, not only will you be getting pure water, but you will also be getting it in a fast way. You will be amazed at how fast the tap water can be filtered and purified. The systems can cost you anywhere from ten thousand dollars to several hundred thousand dollars, depending on what you get and how complex your design is.

The second thing that you can do in order to ensure that your drinking water is clean is to simply keep a supply of bottled water on hand. This is especially helpful if you have guests that are staying at your house. You can easily pop some bottles in their bottles and bring a glass of water to them at a moment’s notice. This can make a huge difference in terms of convenience and safety as well.

Honolulu Drinking Water

The Honolulu drinking water system was created in the early 1900s as a way to purify the water of the city. A man named Kapiolani Makuakilomi waake, who lived at the edge of Oahu Island near the shore, realized that the water from halei-tewa channels was full of dirt and disease-causing organisms like cryptosporidium and giardia. This tap water supply needed to be purified so that it could be used for bathing and drinking. The first laboratory developed in the United States was installed in his home and since then, various scientists and institutions have tried to purify the tap water for safe consumption. The Honolulu drinking water is constantly monitored by the Department of Health.

The purification process that is used today leaves a few ions in the tap water. These negative ions help to eliminate all the harmful microorganisms that are not able to penetrate the heavy coatings of the carbon filter membranes. In the US the water supply in many major cities is treated using chlorine and other disinfectants, while others use chloramine. The latter has better taste and odor but cannot remove the chemical contaminants.

You can find a number of companies that provide Honolulu drinking water services. Some of them are quite large and well known, while others are smaller operators. Before you select one, make sure that the company has the necessary permits to operate and that its systems meet all federal and state health standards. You can check with your local health department to ensure that the purifying process is met properly. A good company will always test their water samples before distributing them to the customers.

Honolulu Bottled Water

If you are traveling to a new city on an extended trip, and are staying in one of the hotels that have Honolulu Bottled Water available in the room, you might want to think about taking a short vacation in this part of the country. While you might not be able to purchase your own supply of bottled water from the tap (there simply is not enough of it available in this size of a city), it is unlikely that you will run into any issues with tap water during your stay. Most of the hotels that offer this service also offer free bottled water in the rooms.

If you decide to purchase bottled water from the store when you get there, you should make sure that it is certified as potable water. Many companies will mark their bottles as such when you purchase them, but it is important to look for this information. In addition, if you buy a large bottle of water in bulk from the store, ask the clerk if you can bring a gallon of your own with you. You can even fill up your own five-gallon pitcher if it will help you save money. When you go out to dinner or a movie with your friends, you will surely need more than just water to quench your thirst. You can always purchase an ice pack to put into your water to make it safer to drink from the refrigerator while traveling.

If you take advantage of having clean and pure water to drink when you are away from home, you will find that your vacation will go much more smoothly. You will not dread being in the hotel room next to someone who is drinking from a dirty glass or bottle. Instead, you will enjoy every meal that you experience in Honolulu, knowing that the water that you are consuming is clean and pure from the tap, and will be enjoyed by your friends and family when they join you.

Honolulu Water Supply

Have you ever tried to do your research about the Honolulu water supply or not? Do you know that our water supply is very important and it is quite risky as well? Some people say that the Honolulu Water Supply is getting lesser and fewer now. This was also told by a few experts, but after further investigation, they proved that there is no big problem with the Honolulu water supply at all!

If you want to get a detailed explanation about how the Honolulu water supply works then you can consult any of the experts. There are so many of them in Honolulu that you can ask for their advice any time of the day or night. Do not forget to tell them to give you all the details that you need about the water shortage at present. They will not charge you anything until they give you the exact information that you want to know about the Honolulu water supply. Now, if you think that those water supply experts are saying that there is no big problem with the Honolulu water supply at all, then you are totally wrong!

There are so many people in Honolulu who have faced the big problem of getting water for drinking, cooking, or bathing. The water is not available at all and people are facing real difficulties when it comes to getting water to use for these purposes. There was one particular house, which has a huge water tank underneath the ground. But, the tank has leaked and the water that was under that tank has started mixing with the dirt and the algae, which are in the tank. That kind of situation might be life-threatening for some people, who are still living in that house.

Honolulu Water Sources

The Honolulu Water Resources Board estimates that there are between two and seven million people who use groundwater in the metropolitan areas of Honolulu and Makaha each day. Nearly all of the water used comes from rain runoffs from the ocean and has to be treated before it can be used by local residents. Rainwater is not treated in any way before being used, it just needs to be stored as long as possible so that it doesn’t get wasted. It is also pumped back into the ocean for use when it rains again.

Part of the problem is that most people don’t realize that they are using groundwater on a daily basis without even knowing about it. If everyone knew that they were using groundwater without treating it, then the amount of water wasted each day would be much smaller, and less harmful to the environment. Many people don’t have a problem with using rainwater, but they certainly should if they have alternative sources for their drinking water.

There are a few different options available for treating water in the metropolitan areas of Honolulu and Makaha. A lot of the water that goes into these areas comes from wastewater treatment plants which treat the water before it ever makes it out of the plant and into the public sewer system. Some wastewater treatment plants also allow for recycling of the water, meaning that some of the water that does go to a city water plant can come back out again, recycled, as drinking water. However, this water is still not clean enough to be safe to drink and most people would never want to use this water for drinking. There are also a few private companies in the area that have developed desalination plants that can treat ocean water and bring it back to a usable level.

What Do People In Hawaii Think About The Tap Water?

Travelers and residents of Hawaii have rated the water quality and pollution as follows, according to subjective survey data. A score of 100% is considered very high, and a score of 0% is very low. Please be cautious that "moderate to very high" water pollution is bad and the higher the rate of water quality the better.

Tap water ratings

  • Drinking Water Pollution and Inaccessibility 24% Low
  • Water Pollution 41% Moderate
  • Drinking Water Quality and Accessibility 76% High
  • Water Quality 59% Moderate



EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Hawaii Department of Health, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility details

  • Serves: 24798
  • Data available: 2012-2017
  • Data Source: Groundwater
  • Total: 14

Contaminants That Exceed Guidelines

  • 1%2C2%2C3-Trichloropropane
  • Chromium (hexavalent)
  • Nitrate
  • Nitrate and nitrite
  • Tetrachloroethylene (perchloroethylene)
  • Total trihalomethanes (TTHMs)

Other Detected Contaminants

  • 1%2C2-Dibromo-3-chloropropane (DBCP)
  • Barium
  • Bromoform
  • Chlorodifluoromethane
  • Dibromochloromethane
  • Fluoride
  • Strontium
  • Vanadium


Always take extra precautions, the water may be safe to drink when it leaves the sewage treatment plant but it may pick up pollutants during its way to your tap. We advise that you ask locals or hotel staff about the water quality. Also, note that different cities have different water mineral contents.

Sources and Resources

Yes, it is safe to drink tap water around Hawaii, including in Honolulu. Tap water on the islands is very safe and of the highest quality.

Tap water is processed through treatment plants and is completely safe to drink. There are alerts sent out to in the event of contamination in the main tap, but so far, the alert has never been used. Unless the government issues one these alters, it should always be assumed that the water is safe to consume.

Honolulu Tap Water
Honolulu, Hawaii

Tap water in Honolulu exceeds all federal and state safe drinking water standards. The tap water regularly monitored by the Honolulu Board of Water Supply to maintain high standards and reassure all residents that their water is safe.

The quality of drinking water in the U.S. governed by the SDWA or Safe Drinking Water Act. The national drinking water quality standard has been set by the EPA or the U.S. Environmental Protection Agency.

The Department of Health ensures that both public and private suppliers of drinking water comply with federal and state standards. The DOH and EPA are continuously monitoring and enforcing these regulations.

Every summer, the Water Quality Report from the Board of Water Supply (BWS) was mailed to all customers. These are also called Consumer Confidence Reports (CCR); these reports contain a wealth of information about water quality across the United States.

Source of Water in Honolulu, Hawaii

Honolulu is located on the island of Oahu and is the island’s most populous city. Residents get their freshwater from the island’s extensive aquifer systems. These aquifer systems provide most of the tap water used in the city, and this is because surface water is not a reliable source of clean water in Hawaii. The Honolulu Board of Water Supply uses four shafts, twelve tunnels and 84 well stations around the island of Oahu to tap water from the aquifers.

Current Weather in Honolulu


Some of the Convenience Stores in Honolulu

ABC Superette
ABC Superette
  • ABC Superette
  • Russell’s Convenience
  • Grab N Go
  • Coco Cove Center of Waikiki
  • Whalers General Store
  • Holoholo Market
  • Bin’s Convenience Store
  • 7-Eleven

Estimated Price of Bottled Water


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