Aquarion-ridgefield Knolls
EPA ID: CT1180021 · 958 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Aquarion-ridgefield Knolls (CT1180021): 1 EPA violation in the last five years. Despite the 1 historical violation in its record, Aquarion-ridgefield Knolls has cleared every one and now meets EPA standards serving 958 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Aquarion-ridgefield Knolls Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Aquarion-ridgefield Knolls serves a community with a median household income of $168,991 and an estimated 25,029 residents across its service area. Approximately 72% 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-ridgefield Knolls's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How Aquarion-ridgefield Knolls compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 7 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS).
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-ridgefield Knolls (EPA ID: CT1180021) is a community water system in Connecticut that serves approximately 958 people from groundwater sources.
This system serves ZIP code 06877 in Ridgefield.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 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 |
|---|---|---|---|
| December 30, 2021 | Stage 1 DBP Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.003 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.
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.
- 06877 - Ridgefield
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Aquarion-ridgefield Knolls (CT1180021) on EPA.gov.
Frequently Asked Questions
Is Aquarion-ridgefield Knolls water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Aquarion-ridgefield Knolls; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Aquarion-ridgefield Knolls serve?
Aquarion-ridgefield Knolls serves approximately 958 people across 1 ZIP code in Connecticut.
Where does Aquarion-ridgefield Knolls get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Aquarion-ridgefield Knolls (CT): 1 EPA Violation. https://zipcheckup.com/water-system/ct1180021/
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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-ridgefield Knolls (EPA ID: CT1180021) - request the latest Consumer Confidence Report or ask about specific contaminants.