Regency Park: Notice of Chlorine Treatment Effective Jan. 5

In September 2025, Washington Water informed Regency Park Water System customers that it had completed a new chlorination treatment plant. Due to unforeseen circumstances related to weather events, Washington Water delayed putting the plant into service. Effective Monday, January 5, 2026, the plant will go online and chlorination will be added to the Regency Park Water System (listed on the map below).

Chlorine is being added to this water system as part of our company-wide goal for disinfection of all our water systems. Chlorination is a disinfectant that kills or inactivates harmful microorganisms that can potentially cause illness. Chlorine is also added for its residual properties. Chlorine remaining in the water supply is available to fight against potential contamination in the water distribution and storage systems that might enter through leaks or pipe breakages. Chlorination protects public health.

The targeted chlorine residual concentration in the distribution system is very low, at just 0.30-0.50 ppm (the federal and state maximum residual disinfectant level in drinking water is 4.0 ppm). However, if the chlorine odor or taste ever becomes overly noticeable, please do not hesitate to call our Customer Service Center.

Customers that have tropical fish and are concerned about chlorine in your water, please check with your local pet store for information on how to remove chlorine from the water. De-Chlor, water conditioner, is commonly used to remove chlorine from fish tanks.

If you need additional information, please call our Customer Service Center at (877) 408-4060, or email us at [email protected].