Human-caused sources of pollution include wastewater and septic discharges.
Recent scientific studies conclude that in addition to agricultural pollution, wastewater is a dominant source of pollution in our watersheds.
Septic systems are designed to leach nutrients from wastewater into the soil. These nutrients eventually find their way into groundwater, and into our rivers. Faulty or leaking septic systems exacerbate the problem. Support the effort to upgrade septic systems with denitrification technology and encourage homeowners to pump out their septic systems every three to five years.