Gardiner Sd#1 STP
Town Hall, PO Box 1, Rte 44/55, Gardiner, NY 12525 · Ulster County · Publicly Owned Treatment Works
- Average flow
- 0.06 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 0.06 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 33 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2026.
Treatment technology
Treatment structures and unit processes at Gardiner Sd#1 STP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 33
- Effluent violations
- 32
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 Gardiner Sd#1 STP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $65,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2026
Gardiner NY Sanitary Sewer System and Wastewater Treatment Plant
Administrative order · CWA, NPDES Discharge without a Permit · Final Order No Penalty · Compliance actions $65,000
EPA's description of the case:
“Chlroine and Flow Exceedances, Collection system and O&M Plan violations.”
Source: EPA ECHO, civil enforcement case 02-2026-3024.
Full case history with a free Klarifi account
Every action against Gardiner Sd#1 STP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
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
0.8 MGD
New Paltz · 7 mi away
0.0073 MGD
Pine Bush · 8 mi away
0.15 MGD
Ellenville · 10 mi away
0.03 MGD
Highland · 11 mi away
1.1 MGD
Marlboro · 11 mi away
0.12 MGD
Napanoch · 11 mi away
0.42 MGD
Montgomery · 11 mi away
0.36 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 October 26, 2026; facility record last updated September 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms