Lancaster Wastewater Treatment Facility
191 Water Street, Lancaster, NH 03584 · Coos County · Publicly Owned Treatment Works
- Average flow
- 0.68 MGD
- Design flow
- 1.2 MGD
- NPDES permit
- NH0100145
- Administratively continued
- Permit expires
- September 2025
- Population served
- 3,350
- CWNS 2022
Lancaster Wastewater Treatment Facility is a publicly owned wastewater treatment works in Lancaster, Coos County, New Hampshire treating an average of 0.68 million gallons per day against a permitted design capacity of 1.2 MGD, serving about 3,350 residents. It discharges under NPDES permit NH0100145 (administratively continued), which expires in September 2025, with 69 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Lancaster Wastewater Treatment Facility.
Available with a free Klarifi account
See the full treatment train at Lancaster Wastewater Treatment Facility: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 69
- Effluent violations
- 37
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
4 verified contacts for Lancaster Wastewater Treatment Facility, with validated emails and direct phone numbers.
Unlock 4 verified contacts (1 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Lancaster Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New Hampshire
Lancaster · 3 mi away
0.0034 MGD
Whitefield · 8 mi away
0.13 MGD
Groveton · 8 mi away
0.04 MGD
Northumberland · 9 mi away
0.09 MGD
Littleton · 16 mi away
0.55 MGD
North Stratford · 18 mi away
0.02 MGD
Berlin · 20 mi away
1.75 MGD
Lisbon · 26 mi away
0.18 MGD
Lancaster Wastewater Treatment Facility: 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 16, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms