Highlands Sewer Improvement Area
Fort Montgomery, NY · Orange County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- 0.12 MGD
- NPDES permit
- NY0149411
- Effective
- Permit expires
- June 2031
- Population served
- 3,117
- CWNS 2022
Highlands Sewer Improvement Area is a publicly owned wastewater treatment works in Fort Montgomery, Orange County, New York treating an average of 0.07 million gallons per day against a permitted design capacity of 0.12 MGD, serving about 3,117 residents. It discharges under NPDES permit NY0149411 (effective), which expires in June 2031, with 5 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 5
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Highlands Sewer Improvement Area.
No verified contacts on file yet
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Nearby wastewater treatment plants in New York
Peekskill · 3 mi away
5.17 MGD
Buchanan · 5 mi away
0.24 MGD
Highland Mills · 6 mi away
0.02 MGD
Cold Spring · 7 mi away
0.2 MGD
Stony Point · 7 mi away
0.84 MGD
West Haverstraw · 8 mi away
3.6 MGD
Harriman · 8 mi away
4.53 MGD
Cornwall · 9 mi away
0.04 MGD
Highlands Sewer Improvement Area: 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 September 29, 2025.