The BWS Water Quality Report - also known as the "Consumer Confidence Report" (CCR) - is sent to all customers each summer. The CCR contains a wealth of information about your water quality.

Click to download the 2010 Water Quality Report Supplemental
    Information Pamphlet (PDF)
Click to download the 2010 Water Quality Report form
Click to download the Water Quality Report for your specific area

This report does several things:

• Identifies the source which supplies water for your address
• Reports detected contaminants or elements in the water and ensures that your drinking water meets all safe drinking water standards
• Describes any treatment process used, if necessary, to make your water safe to drink
• Explains terms used in the regulation of drinking water
• Tells you where to go for additional information

What we all do and the habits that we practice every day will determine both the quality of our water and the quantity available for our use.  Monitoring the quality of our water won't matter if we don't take care of our environment as individuals and as a community. 

Oahu is blessed with water that is among the best quality in the world. At the Board of Water Supply (BWS), our job is to make sure it's also the safest.

That is why water from each of our sources is regularly tested. We must ensure that Oahu's water supply not only meets the Safe Drinking Water Act requirements, but also exceeds the most demanding regulations governing the quality of our drinking water.

As mandated under Federal and State law, the State Department of Health and the Board of Water Supply regularly test Oahu's drinking water for more than 100 different kinds of chemical "contaminants". At BWS, over 18,500 tests are conducted by our Chemical Laboratory.

In addition, the BWS analyzes approximately 10,000 water samples every year for microbiological contaminants (bacteria). If bacteria are detected, chlorine is added to disinfect the affected system.

Technically, anything found in water is referred to as a contaminant by the U.S. Environmental Protection Agency (EPA), including natural minerals that enhance its taste and quality.  The presence of a contaminant, in itself, does not mean that it is a health risk.  It is the amount of a substance in the water that is of most concern. 

We believe that keeping the public informed about the quality of its drinking water is an important part of our job. Because the health of all Oahu's people depends on safe drinking water, it is truly our most precious possession. 

Every water user needs to actively participate in the conservation and protection of our water sources.