Hanover Wastewater Treatment Facility
Hanover, NH · Grafton County · Publicly Owned Treatment Works
- Average flow
- 0.99 MGD
- Design flow
- 2.3 MGD
- NPDES permit
- NH0100099
- Administratively continued
- Permit expires
- January 2021
- Population served
- —
- CWNS 2022
Hanover Wastewater Treatment Facility is a publicly owned wastewater treatment works in Hanover, Grafton County, New Hampshire treating an average of 0.99 million gallons per day against a permitted design capacity of 2.3 MGD. Treatment on site includes clarifiers, biogas silos, biogas balloons. It discharges under NPDES permit NH0100099 (administratively continued), which expires in January 2021, with 45 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
- 45
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Hanover
Hanover's capital improvement plan lists 87 water, sewer and wastewater line items worth $64M starting 2026–2099. The largest budgeted items are shown here.
All water and sewer capital projects in Hanover →
| Project | Budget | Years |
|---|---|---|
| Nitrogen Removal & Facility upgrade | $22,000,000 | 2049–2049 |
| Distribution Project 2 ($455K) | $8,000,000 | 2029–2029 |
| Distribution Project 1 ($304k) | $7,800,000 | 2091–2091 |
| Grasse Road Storage Tank | $4,500,000 | 2099–2099 |
| Aeration Basins | $4,224,700 | 2060–2060 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Hanover Wastewater Treatment Facility.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in New Hampshire
Lebanon · 4 mi away
0.89 MGD
Claremont · 22 mi away
1.2 MGD
Sunapee · 24 mi away
0.22 MGD
Bristol · 30 mi away
0.21 MGD
Ashland · 33 mi away
—
Charlestown · 33 mi away
0.03 MGD
Haverhill · 34 mi away
0.18 MGD
Franklin · 38 mi away
3.53 MGD
Hanover 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 September 11, 2026; facility record last updated May 21, 2025.