Welcome to the Official Website of Jefferson County Public Water Supply District No. 12

Our Mission

At Jefferson County PWSD No. 12, we are committed to providing safe, high quality water services to our community, while maintaining a standard of excellence in customer service and environmental conservation. We are an equal opportunity provider & employer.

Bill Payment Options

Looking for the most convenient way to pay your bill? We offer a wide variety of payment options to our customers. Simply choose the option that best suits your needs... Learn more...

Interactive Map

We are excited to announce the addition of an interactive map showing our service area and ALL of Jefferson County! To explore further, please visit our map page.

Recent News View All »

What is "Primacy Fee" on my bill?

June 04, 2025

The Primacy Fee is collected from each user by every public water system in Missouri as mandated by law and the Missouri Dept. of Natural Resources. This fee, set by MoDNR, funds laboratory analysis of water at the state lab, provides technical assistance to water systems and allows Missouri to manage water systems instead of the US EPA. More information can be found on the MoDNR website by clicking HERE.

Keeping Your Furry Friends Hydrated During the Hot Summer Months

July 09, 2025

As the temperature rises and summer makes its grand entrance, it's essential to remember that our pets need extra care to stay comfortable and healthy.

Just like us, pets can become dehydrated in the heat, which can lead to serious health issues if not properly managed. Ensuring your pet stays hydrated during these hot months is key to their well-being and safety.

Read the full article »