Though not typically included in the urban stormwater sector, there are also opportunities to achieve pollutant reductions through upgrades to residential septic systems and small wastewater treatment plants. Septic systems, especially older ones, are very prone to nitrogen leaks. Upgrading the pre-treatment tank or making enhancements to the drain field can be effective nitrogen reduction strategies.

U-13 Enhanced Septic Systems Fact Sheet

Expert Panel Report and Resources

Enhanced Septic Systems Expert Panel Report: Final

Training Resources

[Webcast] Crediting On-Site Wastewater Treatment Systems in the Bay Watershed