Aquarion-eastern Fairfield County
EPA ID: CT0150011 · 351,756 people served · 41 ZIP codes
ZipCheckup's reading of EPA SDWIS for Aquarion-eastern Fairfield County (CT0150011): PFAS sampling above the current EPA limit (UCMR5). On record: Aquarion-eastern Fairfield County, 24 violations, all resolved, 351,756 in service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Aquarion-eastern Fairfield County Source: EPA SDWIS service area boundaries.
Service area boundary - Grade D
Service Area Demographics
The Aquarion-eastern Fairfield County serves a community with a median household income of $144,387 and an estimated 838,457 residents across its service area. Approximately 76% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Aquarion-eastern Fairfield County's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How Aquarion-eastern Fairfield County compares to EPA limits
What This Means For You
Mercury at 2 mg/L exceeds the EPA maximum of 0.002 mg/L. Kidney damage, neurological impairment. Consider activated carbon (GAC) filtration.
Cadmium at 2 mg/L exceeds the EPA maximum of 0.005 mg/L. Kidney damage accumulating over lifetime; probable carcinogen. Consider reverse osmosis filtration.
Selenium at 2 mg/L exceeds the EPA maximum of 0.05 mg/L. Hair & nail loss, nerve damage, liver & kidney damage. Consider reverse osmosis filtration.
Chromium at 2 mg/L (total chromium; California Cr-6 MCL = 0.010 mg/L) exceeds the EPA maximum of 0.1 mg/L (total chromium; California Cr-6 MCL = 0.010 mg/L). Stomach & intestinal cancer (known carcinogen). Consider reverse osmosis filtration.
Nitrite at 2 mg/L (as nitrogen) exceeds the EPA maximum of 1 mg/L (as nitrogen). Blue baby syndrome in infants; potential carcinogen. Consider reverse osmosis filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 217 detections recorded. 67 exceed federal EPA limits (4 ppt for PFOA/PFOS). 2 exceed state limits.
Mercury was detected in this water system. activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Connecticut
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Aquarion-eastern Fairfield County (EPA ID: CT0150011) is a community water system in Connecticut that serves approximately 351,756 people from surface water sources.
This system provides water to 41 ZIP codes across 24 communities.
ZIP-Area Home Safety Context: D (49/100)
This is the average Home Safety Score for 32 of 41 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 0 resolved, 24 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2021 | Barium | Non-health-based | Archived |
| January 1, 2021 | Cadmium | Non-health-based | Archived |
| January 1, 2021 | Chromium | Non-health-based | Archived |
| January 1, 2021 | Fluoride | Non-health-based | Archived |
| January 1, 2021 | Selenium | Non-health-based | Archived |
| January 1, 2021 | Nickel | Non-health-based | Archived |
| January 1, 2021 | Nitrite | Non-health-based | Archived |
| January 1, 2021 | Contaminant 1036 | Non-health-based | Archived |
| January 1, 2021 | Mercury | Non-health-based | Archived |
| January 1, 2021 | Contaminant 1075 | Non-health-based | Archived |
| January 1, 2021 | Contaminant 1085 | Non-health-based | Archived |
| January 1, 2021 | Contaminant 1045 | Non-health-based | Archived |
| January 1, 2021 | Barium | Non-health-based | Archived |
| January 1, 2021 | Cadmium | Non-health-based | Archived |
| January 1, 2021 | Chromium | Non-health-based | Archived |
| January 1, 2021 | Fluoride | Non-health-based | Archived |
| January 1, 2021 | Selenium | Non-health-based | Archived |
| January 1, 2021 | Nickel | Non-health-based | Archived |
| January 1, 2021 | Nitrite | Non-health-based | Archived |
| January 1, 2021 | Contaminant 1036 | Non-health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Barium | Inorganic | 2 | No |
| Cadmium | Inorganic | 2 | No |
| Chromium | Inorganic | 2 | No |
| Fluoride | Inorganic | 2 | No |
| Selenium | Inorganic | 2 | No |
| Nickel | Inorganic | 2 | No |
| Nitrite | Inorganic | 2 | No |
| Contaminant 1036 | Other Violation | 2 | No |
| Contaminant 1045 | Other Violation | 2 | No |
| Mercury | Inorganic | 2 | No |
| Contaminant 1075 | Other Violation | 2 | No |
| Contaminant 1085 | Other Violation | 2 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by CT or modeled from parcel and building-footprint data.
This system serves 41 ZIP codes:
06468 · 06470 · 06482 · 06484 · 06604 06605 · 06606 · 06607 · 06608 · 06610 06611 · 06612 · 06614 · 06615 · 06801 06807 · 06820 · 06824 · 06825 · 06830 06831 · 06840 · 06850 · 06851 · 06853 06854 · 06855 · 06870 · 06877 · 06878 06880 · 06883 · 06890 · 06896 · 06897 06901 · 06902 · 06903 · 06905 · 06906 06907
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Aquarion-eastern Fairfield County (CT0150011) on EPA.gov.
Frequently Asked Questions
Is Aquarion-eastern Fairfield County water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Aquarion-eastern Fairfield County; its 24 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Aquarion-eastern Fairfield County serve?
Aquarion-eastern Fairfield County serves approximately 351,756 people across 41 ZIP codes in Connecticut.
Where does Aquarion-eastern Fairfield County get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Aquarion-eastern Fairfield County (CT): 24 EPA Violations. https://zipcheckup.com/water-system/ct0150011/
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Aquarion-eastern Fairfield County (EPA ID: CT0150011) - request the latest Consumer Confidence Report or ask about specific contaminants.