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Community Water System · PWS CT0915221

Aquarion-New Fairfield

Shelton, Connecticut 06484 - drinking water served from groundwater sources to 406 people, tracked in EPA SDWIS and UCMR5.

406
People served
114
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 114 drinking-water violations at Aquarion-New Fairfield, 4% of them health-based - above the Connecticut per-system average.

114
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
406
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aquarion-New Fairfield

Aquarion-New Fairfield is a private-owned community water system that delivers drinking water to 406 residents in Shelton, Connecticut (Fairfield County) through 73 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 114 total violations for this system , of which 4 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 105 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 4 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Connecticut, EPA tracks 2,332 public water systems serving 2,886,005 people, with 206,662 cumulative violations and 21,779 health-based violations on record. About 94% of systems in the state carry at least one violation, and state-wide the average per system is 88.6 violations. Statewide, 40 of 63 UCMR5-tested systems have reported PFAS detections (63.5%).

Aquarion-New Fairfield's 114 violations sit above the Connecticut average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
406
Total Violations
114
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
73
County
Fairfield
School/Daycare
No
MCL Violations
4
Monitoring Violations
105
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 4 2018
Coliform (TCR) MCL 4 2010
Arsenic MR 3 2014
Chromium MR 3 2014
CYANIDE MR 3 2014
Nickel MR 3 2014
Beryllium, Total MR 3 2014
Barium MR 3 2014
Fluoride MR 3 2014
Selenium MR 3 2014
Antimony, Total MR 3 2014
Thallium, Total MR 3 2014
Mercury MR 3 2014
Cadmium MR 3 2014
Endrin MR 2 2006
Hexachlorocyclopentadiene MR 2 2006
Benzo(a)pyrene MR 2 2006
Methoxychlor MR 2 2006
Toxaphene MR 2 2006
Aldicarb sulfone MR 2 2006
Carbofuran MR 2 2006
Aldicarb MR 2 2006
LASSO MR 2 2006
Heptachlor epoxide MR 2 2006
Total Polychlorinated Biphenyls (PCB) MR 2 2006
ETHYLENE DIBROMIDE MR 2 2006
Glyphosate MR 2 2006
Chlordane MR 2 2006
Combined Uranium MR 2 2006
Gross Alpha, Excl. Radon and U MR 2 2006

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Aquarion-New Fairfield.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CT0915221 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Connecticut Drinking Water Authority

Connecticut's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find CT regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2018 Consumer Confidence Rule Other 4 SDWIS / CT0915221 / 7000
2016 E. COLI MR 1 SDWIS / CT0915221 / 3014
2014 Arsenic MR 3 SDWIS / CT0915221 / 1005
2014 Chromium MR 3 SDWIS / CT0915221 / 1020
2014 CYANIDE MR 3 SDWIS / CT0915221 / 1024
2014 Nickel MR 3 SDWIS / CT0915221 / 1036
2014 Beryllium, Total MR 3 SDWIS / CT0915221 / 1075
2014 Barium MR 3 SDWIS / CT0915221 / 1010
2014 Fluoride MR 3 SDWIS / CT0915221 / 1025
2014 Selenium MR 3 SDWIS / CT0915221 / 1045
2014 Antimony, Total MR 3 SDWIS / CT0915221 / 1074
2014 Thallium, Total MR 3 SDWIS / CT0915221 / 1085
2014 Mercury MR 3 SDWIS / CT0915221 / 1035
2014 Cadmium MR 3 SDWIS / CT0915221 / 1015
2010 Coliform (TCR) MCL 4 SDWIS / CT0915221 / 3100

How Aquarion-New Fairfield Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Aquarion-New Fairfield Connecticut avg Federal benchmark
Total violations 114 88.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 9.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 63.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 406 1,238 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,332 regulated public water systems in Connecticut.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Aquarion-New Fairfield water safe to drink? ▼
Aquarion-New Fairfield (PWS ID: CT0915221) has 114 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 406 people using Groundwater sources.
How many people does Aquarion-New Fairfield serve? ▼
Aquarion-New Fairfield serves 406 people in Shelton, Connecticut. It is a Private-owned system using Groundwater water sources with 73 service connections.
What type of violations does Aquarion-New Fairfield have? ▼
Aquarion-New Fairfield has 114 total violations: 4 health-based violations (MCL exceedances or treatment failures), 105 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aquarion-New Fairfield water? ▼
No PFAS testing data is available for Aquarion-New Fairfield under the EPA's UCMR5 monitoring program.
What water source does Aquarion-New Fairfield use? ▼
Aquarion-New Fairfield uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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 system's figures are rendered directly from 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.