County · Connecticut
Tolland County, Connecticut: drinking water records
This overview covers 16 ZIP codes and 67 community water systems in Tolland County. It also stands in for 0 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 |
|---|---|---|---|---|---|
| University of Connecticut - Main Campus CT0780021 | 27,199 | 180 | 2 | 0 | 0.7 ppb |
| Ctwc - Coventry Hills Div CT0320091 | 700 | 60 | 0 | 0 | 0 ppb |
| Woodhaven Apartments CT1600031 | 489 | 0 | 0 | 1 | 0.6 ppb |
| Vernon Village INC. CT1463011 | 430 | 0 | 0 | 1 | 0 ppb |
| Knollwood Apartments CT0780051 | 312 | 0 | 0 | 2 | 0 ppb |
| Walden Apartments CT1600041 | 276 | 0 | 0 | 1 | 1.6 ppb |
| Johnson Memorial Hospital, INC CT1340032 | 250 | 0 | 0 | 1 | 10.2 ppb |
| Abenaki Water/White Rock Water NH0262020 | 238 | 0 | 0 | 9 | 160 ppb |
| Woodland Summit Community Water Assn CT1420041 | 216 | 0 | 0 | 4 | 0 ppb |
| Tolland Water Dept - Torry Road CT1429191 | 204 | 0 | 0 | 3 | 0.8 ppb |
| White Oak Condominiums CT0780041 | 192 | 0 | 0 | 1 | 1.1 ppb |
| Orchard Acres Association CT0780061 | 176 | 0 | 0 | 5 | 1.1 ppb |
| Twin Hills Water District CT0320061 | 156 | 0 | 0 | 4 | 1.2 ppb |
| Maplewood-Millbrook Apartments CT0780161 | 153 | 0 | 0 | 3 | 0 ppb |
| Deer Park Apartments CT1600071 | 125 | 0 | 0 | 4 | 1.4 ppb |
| Club House Apartments CT0780101 | 115 | 0 | 0 | 1 | 0 ppb |
| Willington Ridge Condos - System #1 CT1606111 | 102 | 0 | 0 | 2 | 2.2 ppb |
| Willington Ridge Condos - System #2 CT1606211 | 102 | 0 | 0 | 1 | 1 ppb |
| Abby Water LLC CT0670021 | 100 | 0 | 0 | 2 | 2.2 ppb |
| Hillside Condominiums CT0670051 | 96 | 0 | 0 | 1 | 0 ppb |
| Ridgeview Heights CT1600051 | 96 | 0 | 0 | 2 | 0 ppb |
| Woods Edge Apartments CT0780131 | 96 | 0 | 0 | 1 | 0 ppb |
| North Willington Village Condo Assoc. CT1600061 | 66 | 0 | 0 | 3 | 0 ppb |
| 890 Boston Turnpike CT0121081 | 60 | 0 | 0 | 2 | 3 ppb |
| Southridge Park Apartments CT0120031 | 50 | 0 | 0 | 1 | 0 ppb |
ZIP reports in Tolland County
No ZIP report in this county is published yet.
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.