Knollcrest Tax District
EPA ID: CT0910081 · 356 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Knollcrest Tax District (CT0910081): 1 unresolved EPA violation on record. While corrective steps may be in progress, Knollcrest Tax District currently shows 1 EPA violation unresolved - serving a population of approximately 356.
Data: EPA SDWIS
Service Area Map
Coverage area for Knollcrest Tax District Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Knollcrest Tax District serves a community with a median household income of $143,864 and an estimated 13,558 residents across its service area. Approximately 82% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Knollcrest Tax District'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 Knollcrest Tax District compares to EPA limits
What This Means For You
Surface Water Treatment Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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
Knollcrest Tax District (EPA ID: CT0910081) is a community water system in Connecticut that serves approximately 356 people from groundwater sources.
This system serves ZIP code 06812 in New Fairfield.
Violation History
Status breakdown for accepted records with record years 2021-2026: 12 resolved, 0 archived, 0 addressed, and 1 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 |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Non-health-based | Resolved |
| May 3, 2025 | Lead and Copper Rule | Non-health-based | Resolved |
| May 3, 2025 | Lead and Copper Rule | Non-health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unaddressed (current) |
| August 10, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
| December 30, 2023 | Stage 1 DBP Rule | Non-health-based | Resolved |
| December 1, 2023 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| October 30, 2023 | Consumer Confidence Report Rule | Health-based | Resolved |
| October 2, 2023 | Lead and Copper Rule | Non-health-based | Resolved |
| September 1, 2023 | Consumer Confidence Report Rule | Health-based | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Non-health-based | Resolved |
| January 1, 2023 | Consumer Confidence Report 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 |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 4 | No |
| Consumer Confidence Report Rule | Reporting Failure | 4 | Yes |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | Yes |
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.
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.
- 06812 - New Fairfield
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Knollcrest Tax District (CT0910081) on EPA.gov.
Frequently Asked Questions
Is Knollcrest Tax District water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Knollcrest Tax District. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.
How many people does Knollcrest Tax District serve?
Knollcrest Tax District serves approximately 356 people across 1 ZIP code in Connecticut.
Where does Knollcrest Tax District get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Knollcrest Tax District (CT): 3 Health Violations. https://zipcheckup.com/water-system/ct0910081/
@misc{zipcheckup-water-system-ct0910081,
author = {{ZipCheckup}},
title = {{Knollcrest Tax District (CT): 3 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ct0910081/}
}
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
Knollcrest Tax District (EPA ID: CT0910081) - request the latest Consumer Confidence Report or ask about specific contaminants.