Lake Pend Oreille | Pend Oreille River

Our Wastewater

Similar to stormwater, ineffectively treated wastewater can be a dangerous source of pollution.

This is due to the presence of potential human pathogens, as well as high levels of nitrogen and phosphorous which can promote the growth of algae and aquatic vegetation.

Our team monitors National Pollutant Discharge Elimination System (NPDES) permits of wastewater treatment facilities that discharge effluent into our local waterways in order to ensure compliance.

We also review permit applications from treatment facilities that seek to discharge wastewater to our local waterways to ensure that proposed effluent limits are adequately protective of water quality.

Did you know?

The Environmental Protection Agency (EPA) has used data produced from our Water Quality Monitoring Program to help establish effluent limits for the City of Sandpoint’s wastewater discharge permit as well as the discharge permit for the Kootenai Ponderay Sewer District.

​Just one example of how our water quality data is being used by regulatory agencies.


EPA – Nutrient Pollution – Wastewater
How wastewater from wastewater treatment plants and septic systems can contribute to nutrient pollution in our waterways.

Support this Program!

Our efforts to track wastewater pollution are supported by generous community funding and volunteer citizen scientists.

Become a Citizen Scientist!

Become a trained citizen scientist. Collecting water samples is a great way to enjoy time on the water & get involved in active stewardship of our local waterways!