Highlands Sewer Improvement Area
Mine Dock Rd, Fort Montgomery, NY 10928 · Orange County · Publicly Owned Treatment Works
- Average flow
- 0.09 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 0.09 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. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 2023.
Treatment technology
Treatment structures and unit processes at Highlands Sewer Improvement Area.
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.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Highlands Sewer Improvement Area in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $4,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Mar 2023
Town of Highlands
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $4,000
EPA's description of the case:
“Required to have written procedures for collection system maintenance.”
Source: EPA ECHO, civil enforcement case 02-2023-3007.
Full case history with a free Klarifi account
Every action against Highlands Sewer Improvement Area with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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
Highland Falls · 3 mi away
0.92 MGD
Peekskill · 3 mi away
6.29 MGD
Buchanan · 5 mi away
0.31 MGD
Highland Mills · 6 mi away
0.04 MGD
Cold Spring · 7 mi away
0.22 MGD
Stony Point · 7 mi away
0.98 MGD
West Haverstraw · 8 mi away
4.22 MGD
Harriman · 8 mi away
5.6 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 October 26, 2026; facility record last updated September 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms