About My Water
We invite you to learn more about your water supply—including where it comes from and how it’s treated. We also provide regular updates on water quality, local projects, outages, and alerts, so you always have up-to-date information on your water.
Committed to Quality & Transparency
At Veolia North America, we take great pride in our ability to provide you with a reliable supply of drinking water that meets or surpasses the highest state and federal standards. Our teams work around the clock, rigorously testing and monitoring the entire distribution system so you never have to think twice when you pour yourself a glass of water.
In this section, we invite you to learn more about your water supply—including where it comes from and how it’s treated. We also provide regular updates on water quality, local projects, outages, and alerts, so you always have up-to-date information on your water.
Where Your Water Comes From
70% of your water comes from wells located throughout the Boise area, where it is treated on site to meet safe water drinking standards. The remaining water comes from the Boise River and is treated at either the Marden Water Treatment Plant or the Columbia Water Treatment Plant.
Local Projects & Updates
Find out about upgrades and improvements in your area that are helping to ensure an efficient and reliable supply of drinking water.
Use our convenient map to pinpoint notifications in your area, including water outages, water quality advisories and more.
Water Quality Reports
Check out your local water quality report and see how we comprehensively test your water supply to ensure that it meets the highest standards.
About the Treatment Process
There are several different treatment processes for the water in your area. Groundwater, drawn from underground wells, is treated with small amounts of chlorine to protect against potentially harmful microorganisms in the water. At 9 of the wells, we add low doses of polyphosphate to isolate iron and manganese and keep your water clear. Surface water, drawn from the Boise River, is treated at two plants. The Marden Water Treatment Plant is a conventional filtration plant that filters out particulate matter and has an innovative upflow clarification process for pretreatment. The Columbia Water Treatment Plantis a membrane plant that uses microfiltration to remove particulate matter. Both processes are followed by adding chlorine to destroy harmful bacteria and using pH adjustment to reduce the water’s corrosivity.