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REGIONAL WATER AUTHORITY

Connecticut — Community Water System — PWSID: CT0930011

System Information

PWSIDCT0930011
System NameREGIONAL WATER AUTHORITY
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region01
Serves SchoolNo
WholesalerNo
First ReportedMar 8, 1979
Last ReportedDec 15, 2025

Location & Contact

StateConnecticut
CityNEW HAVEN
ZIP Code06511
Address90 SARGENT DRIVE
OrganizationBARGER, THOMAS C.
Phone203-401-2710

Population & Service

Population Served418,900
Service Connections115,707

Drinking Water Violations (57)

This water system has 57 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Dec 30, 2020 — Lead and Copper Rule MR No No — TT — Resolved May 26, 2021 Lead and Copper Rule
Jan 1, 2017 Mar 31, 2017 CARBON, TOTAL MR No Yes — TT — Archived Mar 31, 2017 Stage 1 Disinfectants and Disinfection Byproducts Rule
Aug 10, 2015 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2015 Consumer Confidence Rule
Aug 10, 2015 — Consumer Confidence Rule Other No No — — — Resolved Jul 1, 2015 Consumer Confidence Rule
Jan 1, 2015 Dec 31, 2015 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Nitrite MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Nitrate Rule
Jan 1, 2015 Dec 31, 2015 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Vinyl chloride MR No Yes — 0.002 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals
Jan 1, 2015 Dec 31, 2015 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2015 Volatile Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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