Westerly Water Department

A Source Water Assessment Package (SWAP) is available for review at our local offices. This assessment outlines the delineated area surrounding our water sources where potential contamination could migrate and reach our water supply.

The package includes an inventory of potential contamination sources within the delineated area and an evaluation of the water supply's vulnerability to these identified sources. According to the Source Water Assessment Plan, our water systems received a specific susceptibility rating.

We welcome you to review the Source Water Assessment Program during regular business hours. Please contact our office to arrange a time.

Regarding bacteria in water: Bacteria play a vital role in our ecosystem, with approximately 45 trillion bacteria living in each person. Without these microorganisms, maintaining healthy lives would be impossible. While coliform bacteria commonly exist in the environment and are generally harmless, their presence in water is concerning as it may indicate contamination with disease-causing organisms.

In 2016, the U.S. EPA implemented new regulations called the Revised Total Coliform Rule, requiring additional measures for water systems to ensure distribution system integrity through monitoring for bacteria like total coliform and E. coli. This updated rule establishes more stringent standards than previous regulations and requires susceptible water systems to implement procedures that reduce contamination risks.

Water systems exceeding certain thresholds of total coliform occurrences must evaluate their systems and promptly address any issues. The EPA anticipates enhanced public health protection under this proactive approach to identifying and resolving potential problems affecting public health.

While we're fortunate to have high-quality water, our goal remains eliminating all potential contamination pathways into our distribution system, and this new rule supports that objective.

1. How often is municipal water tested in Westerly? Water quality is tested daily for basic parameters, with comprehensive testing conducted monthly according to EPA schedules.
2. What causes water hardness in Westerly's water supply? The groundwater in our region naturally contains minerals like calcium and magnesium that contribute to water hardness.
3. Should I be concerned about Bromoform in my water? While present at low levels, Bromoform is a disinfection byproduct that warrants monitoring, especially for vulnerable populations.
4. Does Westerly add fluoride to the water supply? Yes, controlled fluoride addition helps promote dental health according to public health guidelines.
5. How can I reduce contaminants in my home water? Point-of-use filtration systems certified for specific contaminants can provide additional protection for your household.