Jamestown Wastewater Treatment Facility
Jamestown, RI · Newport County · Publicly Owned Treatment Works
- Average flow
- 0.1 MGD
- Design flow
- 0.73 MGD
- NPDES permit
- RI0100366
- Effective
- Permit expires
- June 2029
- Population served
- 2,100
- CWNS 2022
Jamestown Wastewater Treatment Facility is a publicly owned wastewater treatment works in Jamestown, Newport County, Rhode Island treating an average of 0.1 million gallons per day against a permitted design capacity of 0.73 MGD, serving about 2,100 residents. Treatment on site includes clarifiers. It discharges under NPDES permit RI0100366 (effective), which expires in June 2029, with 112 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
- 112
- Effluent violations
- 4
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Jamestown Wastewater Treatment Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Jamestown Wastewater Treatment Facility, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Rhode Island
Newport · 2 mi away
5.3 MGD
North Kingstown · 6 mi away
0.41 MGD
Narragansett · 10 mi away
0.39 MGD
East Greenwich · 11 mi away
0.63 MGD
Bristol · 12 mi away
2.14 MGD
Warren · 15 mi away
1.19 MGD
Cranston · 17 mi away
5.3 MGD
East Providence · 18 mi away
4.4 MGD
Jamestown Wastewater Treatment Facility: 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 November 26, 2025.