Sterling Water System
EPA ID: CT1360011 · 308 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Sterling Water System (CT1360011): no drinking-water violations recorded since 2021. With no violations in its EPA file, Sterling Water System serves 308 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Sterling Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Sterling Water System have a median household income of $94,120 and about 2,905 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 61% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Sterling Water System'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 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Connecticut
System Overview
Sterling Water System (EPA ID: CT1360011) is a community water system in Connecticut that serves approximately 308 people from groundwater sources.
This system serves ZIP code 06377 in Sterling.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2025-12-31 |
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
1 of 1 ZIP records with known zones is in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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.
- 06377 - Sterling
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Sterling Water System (CT1360011) on EPA.gov.
Frequently Asked Questions
Is Sterling Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Sterling Water System in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Sterling Water System serve?
Sterling Water System serves approximately 308 people across 1 ZIP code in Connecticut.
Where does Sterling Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Sterling Water System Water Quality Report, CT. https://zipcheckup.com/water-system/ct1360011/
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title = {{Sterling Water System Water Quality Report, CT}},
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