Midway Heights C. W. D.
EPA ID: CA3110041 · 1,491 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Midway Heights C. W. D. (CA3110041): no drinking-water violations recorded since 2021. Midway Heights C. W. D. is listed without violations in federal records, across a service area of 1,491 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Midway Heights C. W. D. Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: B
Demographics of ZIP Codes Served
The ZIP codes associated with Midway Heights C. W. D. have a median household income of $95,032 and about 45,204 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 59% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Midway Heights C. W. D.'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in California
System Overview
Midway Heights C. W. D. (EPA ID: CA3110041) is a community water system in California that serves approximately 1,491 people from surface water sources.
This system provides water to 4 ZIP codes across 4 communities.
ZIP-Area Home Safety Context: B (75/100)
This is the average Home Safety Score for 1 of 4 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0006 mg/L | No | 2024-12-31 |
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
4 of 4 ZIP records with known zones are 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 CA or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Midway Heights C. W. D. (CA3110041) on EPA.gov.
Frequently Asked Questions
Is Midway Heights C. W. D. water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Midway Heights C. W. D. 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 Midway Heights C. W. D. serve?
Midway Heights C. W. D. serves approximately 1,491 people across 4 ZIP codes in California.
Where does Midway Heights C. W. D. get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Midway Heights C. W. D. Water Quality Report, CA. https://zipcheckup.com/water-system/ca3110041/
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