Littleton Wastewater Treatment Plant
Littleton, NH · Grafton County · Publicly Owned Treatment Works
- Average flow
- 0.27 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- NH0100153
- Expired
- Permit expires
- October 2025
- Population served
- 3,899
- CWNS 2022
Littleton Wastewater Treatment Plant is a publicly owned wastewater treatment works in Littleton, Grafton County, New Hampshire treating an average of 0.27 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 3,899 residents. Treatment on site includes carrousels / oxidation ditches, biogas silos. It discharges under NPDES permit NH0100153 (expired), which expires in October 2025, with 17 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 17
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Littleton Wastewater Treatment Plant.
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Nearby wastewater treatment plants in New Hampshire
Whitefield · 10 mi away
0.09 MGD
Lisbon · 10 mi away
0.02 MGD
Lancaster · 16 mi away
0.23 MGD
Haverhill · 16 mi away
0.18 MGD
Lancaster · 18 mi away
0.0011 MGD
Woodstock · 20 mi away
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Groveton · 24 mi away
0.02 MGD
Waterville Valley · 29 mi away
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Littleton Wastewater Treatment Plant: 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 September 11, 2026; facility record last updated November 5, 2025.