Ulster (t) Sd STP
Kingston, NY · Ulster County · Publicly Owned Treatment Works
- Average flow
- 1.05 MGD
- Design flow
- 1.6 MGD
- NPDES permit
- NY0021563
- Administratively continued
- Permit expires
- September 2016
- Population served
- 9,018
- CWNS 2022
Ulster (t) Sd STP is a publicly owned wastewater treatment works in Kingston, Ulster County, New York treating an average of 1.05 million gallons per day against a permitted design capacity of 1.6 MGD, serving about 9,018 residents. Treatment on site includes clarifiers. It discharges under NPDES permit NY0021563 (administratively continued), which expires in September 2016, with 4 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 4
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Ulster (t) Sd STP.
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Nearby wastewater treatment plants in New York
Kingston · 3 mi away
0.04 MGD
Kingston · 3 mi away
3.37 MGD
Rhinebeck · 5 mi away
0.12 MGD
Saugerties · 6 mi away
0.18 MGD
Woodstock · 7 mi away
0.09 MGD
Rhinebeck · 8 mi away
0.000000002 MGD
Tivoli · 8 mi away
0.05 MGD
Saugerties · 8 mi away
0.49 MGD
Ulster (t) Sd 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.