DDPHE has been monitoring the levels of pollution in water in Denver's lakes and streams for over 45 years. Over that time, the goals of monitoring have evolved to include many other important details of water quality.
DDPHE samples most of the streams and many of the lakes in Denver at least once a year. Sampling results are compared to water quality standards issued by the State of Colorado to determine if it's safe to be in contact with waters in Denver's streams and lakes.
This web application gives users the ability to view monitoring results and to learn about which streams do not meet water quality standards.
To get started click one of the buttons in the upper left to explore stream segments or monitoring sites.