10 Riverdale Ave, Shelton, CT 06484 · Fairfield County · Publicly Owned Treatment Works
Shelton Water Pollution Control Facility is a publicly owned wastewater treatment works in Shelton, Fairfield County, Connecticut treating an average of 2.12 million gallons per day against a permitted design capacity of 2.75 MGD, serving about 41,474 residents. It discharges under NPDES permit CT0100714 (expired), which expires in December 2025, with 123 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in October 2018.
One treatment structure or unit process identified at Shelton Water Pollution Control Facility.
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See the full treatment train at Shelton Water Pollution Control Facility: structures, unit processes and planned upgrades, with exact unit counts.
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Federal civil enforcement cases, compliance inspections and informal actions recorded for Shelton Water Pollution Control Facility in EPA's ICIS system.
Latest case · Oct 2018
SHELTON STP
Judicial case · CWA, NPDES Permit Violations · Final Order With Penalty · Penalty $142,000 · Compliance actions $4M
Source: EPA ECHO, civil enforcement case 01-2004-2075.
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Every action against Shelton Water Pollution Control Facility with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
1 verified contact for Shelton Water Pollution Control Facility, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Shelton Water Pollution Control Facility, plus the full compliance history and discharge data.
Ansonia · 1 mi away
1.71 MGD
Seymour · 4 mi away
1.12 MGD
Milford · 6 mi away
5.85 MGD
Beacon Falls · 8 mi away
0.34 MGD
Stratford · 10 mi away
7.32 MGD
Bridgeport · 11 mi away
5.24 MGD
Bridgeport · 13 mi away
17.54 MGD
Newtown · 13 mi away
0.34 MGD
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 March 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms