Providence Water, although a department of the City of Providence, is regulated by state and federal agencies in addition to city policies and procedures. The quality of our treated drinking water is regulated by the US Environmental Protection Agency and the Rhode Island Department of Health. Our revenue and rate structure is regulated by the Rhode Island Public Utilities Commission.

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Corrosion Control

The professionals at Providence Water treat your drinking water so that when it leaves our treatment plant in Scituate, it meets all Environmental Protection Agency (EPA) and state drinking water requirements. As a normal part of the treatment process, we adjust the pH of the water to control corrosion in the pipes under the streets and in your home. Corrosion can cause metals, such as lead in pipes, to be released into the drinking water. Treated water leaving the plant does not contain lead, however some homes service lines and household plumbing may contain lead.

Providence Water has been working with nationally recognized drinking water experts (Expert Panel) to identify the best forms of corrosion control treatment for our system. Per the recommendation of the Expert Panel, Providence Water has been evaluating the effectiveness of orthophosphate on control corrosion. Orthophosphate is approved by the EPA and is used successfully throughout the United States. Orthophosphate forms a protective coating on the interior of pipes so that lead in service lines, solder, and household plumbing is less likely to be released into the water. Studies to date indicate that orthophosphate may be an effective corrosion control treatment alternative for our water system.