Gardiner Sd#1 STP
Gardiner, NY · Ulster County · Publicly Owned Treatment Works
- Average flow
- 0.04 MGD
- Design flow
- 0.06 MGD
- NPDES permit
- NY0109096
- Effective
- Permit expires
- April 2031
- Population served
- 643
- CWNS 2022
Gardiner Sd#1 STP is a publicly owned wastewater treatment works in Gardiner, Ulster County, New York treating an average of 0.04 million gallons per day against a permitted design capacity of 0.06 MGD, serving about 643 residents. It discharges under NPDES permit NY0109096 (effective), which expires in April 2031, with 34 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
- 34
- Effluent violations
- 33
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Gardiner Sd#1 STP.
No verified contacts on file yet
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Nearby wastewater treatment plants in New York
New Paltz · 6 mi away
0.57 MGD
New Paltz · 7 mi away
0.0081 MGD
Pine Bush · 8 mi away
0.2 MGD
Ellenville · 10 mi away
0.02 MGD
Highland · 11 mi away
0.76 MGD
Marlboro · 11 mi away
0.09 MGD
Napanoch · 11 mi away
—
Montgomery · 11 mi away
0.23 MGD
Gardiner Sd#1 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 September 29, 2025.