County · Connecticut
Middlesex County, Connecticut: drinking water records
This overview covers 23 ZIP codes and 50 community water systems in Middlesex County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Middletown Water Department CT0830011 | 41,019 | 180 | 0 | 0 | 0 ppb |
| Cromwell Fire District Water Department CT0330011 | 14,316 | 60 | 2 | 0 | 0 ppb |
| Ctwc - Shoreline Region-Chester System CT0261031 | 5,030 | 180 | 0 | 0 | 0 ppb |
| Portland Water Department CT1130011 | 5,010 | 120 | 2 | 0 | 0 ppb |
| Rosebrook Water NH0382010 | 1,050 | 0 | 0 | 2 | 48 ppb |
| Ctwc - Jensens Beechwood System CT0700011 | 750 | 0 | 0 | 1 | 2.7 ppb |
| Yeshiva of Waterbury-Durham Campus CT0380041 | 490 | 0 | 0 | 2 | 0 ppb |
| Ctwc - Shoreline Reg-Chester Vllg West CT0261081 | 216 | 0 | 0 | 1 | 0 ppb |
| Mallard Cove Condominium Assn. CT0427011 | 177 | 0 | 0 | 1 | 0 ppb |
| Cobalt Lodge Healthcare & Rehab Center CT0421011 | 130 | 0 | 0 | 1 | 14.9 ppb |
| Chestelm Health & Rehabilitation Center CT0411061 | 120 | 0 | 0 | 1 | 0 ppb |
| Twin Maples Nursing Home CT0381011 | 100 | 0 | 0 | 1 | 1.4 ppb |
| Solano Inn LLC CT1130064 | 96 | 0 | 0 | 1 | 0 ppb |
| Aaron Manor Nursing & Rehab Center CT0261001 | 81 | 0 | 0 | 2 | 1.3 ppb |
| Essex Gardens CT0500021 | 72 | 0 | 0 | 1 | 0 ppb |
| Middlefield Housing Authority CT0820031 | 62 | 0 | 0 | 1 | 1.4 ppb |
| Chatham Acres Elderly Housing CT0424011 | 50 | 0 | 0 | 1 | 3.6 ppb |
| Durham Elderly Housing Division CT0380641 | 50 | 0 | 0 | 1 | 0 ppb |
| Safe Harbor, INC. CT1548011 | 50 | 0 | 0 | 1 | 0 ppb |
| Bittersweet Ridge Water Association CT0827081 | 40 | 0 | 0 | 1 | 0 ppb |
| Goodspeed Actor Housing - the Village CT0419211 | 40 | 0 | 0 | 4 | 21.6 ppb |
| Ridgewood Hills Association System 1 CT0361011 | 36 | 0 | 0 | 1 | 6 ppb |
| Old Indian Trail CT0820501 | 32 | 0 | 0 | 1 | 0 ppb |
| Bellwood Court CT0420031 | 31 | 0 | 0 | 1 | 0 ppb |
| 31 Grist Mill Rd CT0419221 | 30 | 0 | 0 | 6 | 0 ppb |
ZIP reports in Middlesex County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 06414, 06441.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.