We Keep the
Environment
Clean.
Providing Wastewater Management & Treatment Services Since 1925.
Proper Wastewater Treatment
Protects Where You Live, Work, and Play
Water flushed or sent down the drain in homes, businesses, and commercial buildings must be cleaned. If not properly treated the chemicals, human waste, and other contaminants end up in our waterways.
At SESD, we serve local municipal sewer departments by collecting and treating wastewater containing contaminants. In support of this essential community service, we:
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Million Gallons of Wastewater a Day
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Miles of Interceptor & Force Main Pipes
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Residents and Businesses
What We Do
SESD provides wastewater treatment services to Beverly, Danvers, Marblehead, Peabody, Salem, and portions of Middleton and Wenham.
We collect, process, and treat water contaminated by everyday use, removing harmful contaminants to ensure they aren’t released into the environment.
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Tours and Education
Processing over 9 billion gallons of wastewater per year, our treatment facility is essential to maintaining water quality in the communities we serve. SESD hosts plant tours and educational seminars for schools, community groups, and wastewater professionals, sharing a behind-the-scenes look at what we do and how we keep operations online 24/7.
Learn MoreNews & Alerts
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Celebrating 100 Years of Community Service
SESD staff, current and former, joined together on Wednesday, September 10, 2025, to celebrate the Centennial Anniversary of our wastewater...
Action & Awareness
Join Pippen and the Pipe Patrol to Protect Our Waters
All water on Earth is the same - oceans, lakes, streams - even the water inside our own bodies. Plants,...