Mckinney Water District
EPA ID: CA3110022 · 853 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Mckinney Water District (CA3110022): 1 violation on record since 2021. Mckinney Water District's EPA record lists 1 historical violation, and none is listed as open in that record; the utility supplies water to 853 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Mckinney Water District Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Mckinney Water District have a median household income of $121,875 and about 621 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 80% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mckinney Water District'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.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in California
System Overview
Mckinney Water District (EPA ID: CA3110022) is a community water system in California that serves approximately 853 people from groundwater sources.
This system serves ZIP code 96141 in Homewood.
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 |
|---|---|---|---|
| January 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 | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0054 mg/L | No | 2026-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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 CA or modeled from parcel and building-footprint data.
- 96141 - Homewood
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Mckinney Water District (CA3110022) on EPA.gov.
Frequently Asked Questions
Is Mckinney Water District water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Mckinney Water District; 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 Mckinney Water District serve?
Mckinney Water District serves approximately 853 people across 1 ZIP code in California.
Where does Mckinney Water District get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mckinney Water District (CA): 1 EPA Violation. https://zipcheckup.com/water-system/ca3110022/
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author = {{ZipCheckup}},
title = {{Mckinney Water District (CA): 1 EPA Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ca3110022/}
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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
Mckinney Water District (EPA ID: CA3110022) - request the latest Consumer Confidence Report or ask about specific contaminants.