Knollwood Apartments
EPA ID: CT0780051 · 312 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Knollwood Apartments (CT0780051): 2 violations recorded with unresolved status in the SDWIS data used. EPA record snapshot: Knollwood Apartments, 2 open violations, 312 people served.
Data: EPA SDWIS
Service Area Map
Coverage area for Knollwood Apartments Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Knollwood Apartments have a median household income of $103,333 and about 4,780 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Knollwood Apartments's water is classified in EPA records as a groundwater source. 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
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 1 detection recorded.
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
Knollwood Apartments (EPA ID: CT0780051) is a community water system in Connecticut that serves approximately 312 people from groundwater sources.
This system serves ZIP code 06250 in Mansfield Center.
Violation History
Status breakdown for accepted records with record years 2021-2026: 6 resolved, 0 archived, 0 addressed, and 2 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 |
|---|---|---|---|
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Unaddressed (current) |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Unaddressed (current) |
| September 29, 2022 | Lead and Copper Rule | Non-health-based | Resolved |
| August 10, 2022 | Consumer Confidence Rule | Non-health-based | Resolved |
| July 1, 2022 | Consumer Confidence Rule | Non-health-based | Resolved |
| July 1, 2022 | Revised Total Coliform Rule | Non-health-based | Resolved |
| September 29, 2021 | Lead and Copper Rule | Non-health-based | Resolved |
| April 1, 2021 | Lead and Copper 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 |
|---|---|---|---|
| Lead and Copper Rule | Monitoring & Reporting | 3 | No |
| LEAD AND COPPER RULE REVISIONS | Treatment Technique, Monitoring & Reporting | 2 | Yes |
| Consumer Confidence Rule | Other (notice or report rule) | 2 | No |
| Revised Total Coliform Rule | Monitoring & Reporting | 1 | 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.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
- 06250 - Mansfield Center
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Knollwood Apartments (CT0780051) on EPA.gov.
Frequently Asked Questions
Is Knollwood Apartments water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Knollwood Apartments. 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 Knollwood Apartments serve?
Knollwood Apartments serves approximately 312 people across 1 ZIP code in Connecticut.
Where does Knollwood Apartments get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Knollwood Apartments (CT): 1 Health Violation. https://zipcheckup.com/water-system/ct0780051/
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author = {{ZipCheckup}},
title = {{Knollwood Apartments (CT): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ct0780051/}
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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
Knollwood Apartments (EPA ID: CT0780051) - request the latest Consumer Confidence Report or ask about specific contaminants.