Through the use of a hydrant sampler, operators can monitor water quality at various points in the distribution system without the need for access to indoor taps from local businesses or residential homes. Sampling hydrants allows operators to protect public health by routinely collecting bacteriological samples required by their regulatory agency. Operators should sample along the distribution system at the locations and frequency specified by their RTCR sample siting plan. For assistance in developing or updating your sampling plan, check out the EPA documents Sample Siting Plan Instructions (download) and the Revised Total Coliform Rule (RTCR) Sample Siting Plan with Template . Please check with your Primacy Agency to determine if stricter requirements may apply to your system. In this week’s featured video, the U.S. EPA’s Area-Wide Optimization Program demonstrates how to use a hand-built hydrant sampler on dry barrel hydrants to collect water quality samples throughout the distribution system. The procedures used in this video, including how to calculate flush time and how to build a sampler, can be found at the EPA’s Hydrant Sampler Procedure and Parts List web page. Calculating an appropriate flush time is important to yield sample results that accurately characterize the quality within your distribution system. The hydrant sampler from the video can be built with parts from your local hardware store however, since 2018 AWOP has created a new sampler design that requires less parts making it cheaper to build and easier to use. Check out this week’s featured video to find out the best practices and safety concerns for using a hydrant sampler.