PlainWater
Counties → Connecticut

Middlesex County, Connecticut

Water Systems
276
Population Served
97,390
Total Violations
25,593
2,218 health-based
PFAS Detected
2
of 4 tested

Violation Analysis

93.5%
Systems with Violations
92.7
Avg Violations per System
8.7%
Health-Based Violations

Water Source Types

GW
45 systems (16%)
SW
5 systems (2%)

PFAS Contamination

4
Systems Tested
2
PFAS Detected
50.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Middlesex Connecticut water systems by violation status, EPA SDWIS records.

No violations on record (1) One or more violations (49)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Middletown Water Department 41,019 26 Clean
Cromwell Fire District Water Department 14,316 232 Detected
Ctwc - Shoreline Region-Chester System 5,030 156 Clean
Portland Water Department 5,010 65 Detected
Connecticut Valley Hospital 2,928 149 -
Pratt & Whitney 2,800 187 -
Durham Center Division 1,601 298 -
Haddam Killingworth Inter/Middle School 808 308 -
Haddam Meadows S.p. 780 50 -
Ctwc - Jensens Beechwood System 750 447 -
Ctwc - Spice Hill Division 712 210 -
YMCA Camp Ingersoll 653 5 -
Ctwc - Lake Hayward 650 86 -
Haddam-Killingworth High School 642 85 -
Nathan Hale-Ray Middle School 620 7 -
East Haddam Elementary School 600 17 -
East Hampton High School 568 332 -
Valley Regional High School 565 23 -
Edgemere Condominium Assn., Inc. 540 297 -
Wadsworth Falls/Bathroom Well 527 13 -
Yeshiva of Waterbury-Durham Campus 490 1,081 -
East Hampton Middle School 487 118 -
Nathan Hale-Ray High School 461 4 -
Whelen Engineering Co 400 33 -
John Winthrop Junior High School 400 20 -
Frederick Brewster School 370 33 -
East Hampton Wpca - Village Center 366 264 -
Burr District Elementary School 364 381 -
East Hampton Wpca - Royal Oaks System 328 303 -
Killingworth Elementary School 315 21 -
Deer Lake Outdoor Center Dining - Well 2 300 10 -
John Lyman School 285 19 -
Ctwc - Banner Village 265 43 -
Ctwc - Shoreline Reg-Chester Vllg West 216 94 -
Heritage Cove Condominiums 208 93 -
Ctwc - Baker Hill Division 203 201 -
Hobson Motzer, Inc. 200 239 -
732 Middlesex Turnpike 200 20 -
The Independent Day School 199 6 -
Aquarion-East Hampton 189 5 -
St. Clements Marina 180 0 -
Mallard Cove Condominium Assn. 177 262 -
Dd Durham 156 10 -
East Haddam Municipal Center 154 512 -
Ctwc - Westchester East 153 349 -
Goodspeed Opera House 150 332 -
Clinton Nurseries - Secondary System 143 11 -
Cobalt Lodge Healthcare & Rehab Center 130 204 -
Chestelm Health & Rehabilitation Center 120 47 -
Evergreen Springs - System #4 110 356 -

Other Counties in Connecticut

Hartford County
219 systems · 836,032 served · 20,244 violations
Fairfield County
336 systems · 779,265 served · 42,084 violations
New Haven County
212 systems · 723,250 served · 17,543 violations
New London County
396 systems · 209,068 served · 34,737 violations
Litchfield County
345 systems · 117,396 served · 27,780 violations
Windham County
255 systems · 63,884 served · 21,628 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Middlesex County? ▼
Middlesex County has 25,593 total drinking water violations across 276 water systems, of which 2,218 are health-based violations. 93.5% of systems have at least one violation.
How many people get water from Middlesex County systems? ▼
Water systems in Middlesex County serve approximately 97,390 people through 276 public water systems.
Has PFAS been detected in Middlesex County water? ▼
Of 4 water systems tested for PFAS in Middlesex County, 2 had PFAS detected (50.0% detection rate).
What types of water sources supply Middlesex County? ▼
Water systems in Middlesex County use GW (45 systems), SW (5 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 8.7% of Middlesex County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.