Startup and Shutdown
Water Quality Tests Coliform and Nitrate
We recommend all water systems have a chlorine residual test kit. You can order a chlorine residual test kit and reagents from several different companies. Here are a few:
You can find others by searching the Internet using keywords “chlorine test kit.” Remember, you want a test kit that measures free chlorine with a range of approximately 0.0 to 3.5 parts per million.
The following websites may contain useful information to assist you.
For more information
Eastern Region: Spokane Valley 509-329-2100
Northwest Region: Kent 253-395-6750
Southwest Region: Tumwater 360-236-3030
Not sure which region you're in? Click for map of regional offices (PDF).