South Berwick Sd WWTF
Liberty St, South Berwick, ME 03908 · York County · Publicly Owned Treatment Works
- Average flow
- 0.25 MGD
- Design flow
- 0.37 MGD
- NPDES permit
- ME0100820
- Effective
- Permit expires
- June 2030
- Population served
- 3,300
- CWNS 2022
South Berwick Sd WWTF is a publicly owned wastewater treatment works in South Berwick, York County, Maine treating an average of 0.25 million gallons per day against a permitted design capacity of 0.37 MGD, serving about 3,300 residents. It discharges under NPDES permit ME0100820 (effective), which expires in June 2030, with 2 recorded violations in the last three years.
Treatment technology
5 treatment structures and unit processes identified at South Berwick Sd WWTF.
Available with a free Klarifi account
See the full treatment train at South Berwick Sd WWTF: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at South Berwick Sd WWTF.
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Nearby wastewater treatment plants in Maine
York · 11 mi away
0.99 MGD
Ogunquit · 11 mi away
0.49 MGD
Sanford · 14 mi away
1.42 MGD
Kennebunkport · 19 mi away
0.32 MGD
Biddeford · 28 mi away
0.0075 MGD
Old Orchard Beach · 28 mi away
0.99 MGD
Limerick · 32 mi away
0.1 MGD
Cape Elizabeth · 38 mi away
0.22 MGD
South Berwick Sd WWTF: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed October 26, 2026; facility record last updated September 24, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms