PlainWater
Counties → Connecticut

Fairfield County, Connecticut

Water Systems
336
Population Served
779,265
Total Violations
42,084
4,802 health-based
PFAS Detected
11
of 13 tested

Violation Analysis

96.4%
Systems with Violations
125.3
Avg Violations per System
11.4%
Health-Based Violations

Water Source Types

GW
39 systems (12%)
SW
11 systems (3%)

PFAS Contamination

13
Systems Tested
11
PFAS Detected
84.6%
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

Fairfield 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
Aquarion-Eastern Fairfield County 351,756 585 Detected
Aquarion-Stamford 119,214 136 Detected
Danbury Water Department 62,055 326 Detected
Aquarion-Greenwich 53,297 114 Detected
South Norwalk Electric & Water 42,000 215 Clean
Norwalk First Taxing District 40,256 6 Detected
Aquarion-Darien 18,737 8 Detected
Aquarion-New Milford Regional 13,331 126 Detected
Aquarion-New Canaan 10,097 30 Detected
Bethel Water Dept 9,507 248 Detected
Aquarion-Ridgefield 7,476 93 Detected
Aquarion-Newtown Regional 6,054 38 Detected
Fairfield Hills 2,610 64 -
Weston Schools and Municipal Buildings 2,600 493 -
Ridgefield High and Middle School 2,575 100 -
New Fairfield High/Middle School 1,791 576 -
Consolidated & Meeting House Hill School 1,425 294 -
Candlewood Shores Tax District 1,315 382 -
Brookfield High School 995 53 -
Aquarion-Ridgefield Knolls 958 228 -
Whisconier Middle School 950 142 -
Joel Barlow Regional High School 890 139 -
Redding Elementary School 811 55 -
Greenwich American Center 800 288 Clean
Lake Waubeeka Association 712 202 -
Aquarion-Ball Pond 629 86 -
Brunswick School (Lower & Lower Middle) 567 85 -
Candlewood Knolls Water Authority 524 478 -
Head O Meadow Elementary School 506 286 -
Stone Bridge Center for Health & Rehab 504 303 -
St Lukes School Athletic Center 500 17 -
Branchville School 488 6 -
Fairview Country Club 435 164 -
John Read Middle School 430 101 -
Sherman Elementary School 430 79 -
Farmingville Elementary School 428 0 -
Aspetuck Valley Country Club-Clubhouse 415 10 -
Aquarion-New Fairfield 406 114 -
St Lukes School 405 248 -
Nordan LLC 400 14 -
Stony Hill Village Condominium Assn 392 456 -
Aqua Vista Assoc, Inc 388 137 -
Church of Latter Day Saints 373 6 -
Indian Well S.p./South Well 367 32 -
Knollcrest Tax District 356 163 -
Whitby School 350 633 -
Aquarion-Timber Trails 310 44 -
Aquarion-Possum Ridge 307 244 -
Arrowhead Point Homeowners Assn Inc. 296 53 -
Brunswick School (Upper Middle) 295 34 -

Other Counties in Connecticut

Hartford County
219 systems · 836,032 served · 20,244 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
Middlesex County
276 systems · 97,390 served · 25,593 violations
Windham County
255 systems · 63,884 served · 21,628 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Fairfield County? ▼
Fairfield County has 42,084 total drinking water violations across 336 water systems, of which 4,802 are health-based violations. 96.4% of systems have at least one violation.
How many people get water from Fairfield County systems? ▼
Water systems in Fairfield County serve approximately 779,265 people through 336 public water systems.
Has PFAS been detected in Fairfield County water? ▼
Of 13 water systems tested for PFAS in Fairfield County, 11 had PFAS detected (84.6% detection rate).
What types of water sources supply Fairfield County? ▼
Water systems in Fairfield County use GW (39 systems), SW (11 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. 11.4% of Fairfield 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.