Village Of Walden STP
Montgomery, NY · Orange County · Publicly Owned Treatment Works
- Average flow
- 1 MGD
- Design flow
- 1.2 MGD
- NPDES permit
- NY0030490
- Effective
- Permit expires
- July 2031
- Population served
- 6,724
- CWNS 2022
Village Of Walden STP is a publicly owned wastewater treatment works in Montgomery, Orange County, New York treating an average of 1 million gallons per day against a permitted design capacity of 1.2 MGD, serving about 6,724 residents. Treatment on site includes carrousels / oxidation ditches. It discharges under NPDES permit NY0030490 (effective), which expires in July 2031, with 136 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 136
- Effluent violations
- 125
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Village Of Walden STP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Village Of Walden STP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in New York
Montgomery · 1 mi away
0.23 MGD
Montgomery · 3 mi away
0.02 MGD
Blooming Grove · 3 mi away
0.05 MGD
Maybrook · 3 mi away
0.19 MGD
Pine Bush · 7 mi away
0.2 MGD
Washingtonville · 9 mi away
0.39 MGD
Goshen · 10 mi away
0.6 MGD
Washingtonville · 11 mi away
0.0054 MGD
Village Of Walden STP: 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 22, 2025.