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Wastewater

MassDEP's wastewater programs regulate discharges from treatment plants, industrial facilities, sewers, and other sources. This makes sure that our water remains safe from pollutants.

MassDEP's wastewater programs regulate discharges from treatment plants, industrial facilities, sewers, and other sources. The Wastewater Programs make sure that septic systems are safe and that alternative septic technologies are properly tested. This makes sure that our water remains safe from pollutants.

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How does Stormwater pollute our waterbodies?   Massachusetts Nonpoint Source Management Plan (2025-2029) 

What you need to know

Wastewater Permits and Reporting Forms  Groundwater Discharge Permitting  Surface Water Discharge Permitting (NPDES)  Wastewater Treatment Plants  Industrial Wastewater  Nonpoint Source Pollution  Groundwater Discharge & Reclaimed Water Permitting Process  Sewer Systems - Combined Sewer Overflows & Sanitary Sewer Overflows  Residuals & Biosolids  Reclaimed Wastewater  Nine-Element Watershed-Based Plans (WBPs)  Community Septic Management Programs help homeowners with Financial Assistance  Surface Water Discharge Permitting (NPDES) Policies & Guidance  Small Wastewater Treatment Facilities General Permit  Medium Wastewater Treatment Facilities General Permit 

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Image credits:  Sandy Rabb

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