City of Modesto - South Turlock
EPA ID: CA5010023 · 1,099 people served · 1 ZIP code
ZipCheckup's reading of EPA records for City of Modesto - South Turlock (CA5010023): no drinking-water violations recorded since 2021. Violation-free in EPA records - City of Modesto - South Turlock, 1,099 residents served.
Data: EPA SDWIS
Service Area Map
Coverage area for City of Modesto - South Turlock Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with City of Modesto - South Turlock have a median household income of $68,308 and about 43,731 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 72% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 54% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
City of Modesto - South Turlock'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.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in California
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
City of Modesto - South Turlock (EPA ID: CA5010023) is a community water system in California that serves approximately 1,099 people from surface water sources.
This system serves ZIP code 95380 in Turlock.
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 | 2023-12-31 |
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.
- 95380 - Turlock
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Modesto - South Turlock (CA5010023) on EPA.gov.
Frequently Asked Questions
Is City of Modesto - South Turlock water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for City of Modesto - South Turlock 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 City of Modesto - South Turlock serve?
City of Modesto - South Turlock serves approximately 1,099 people across 1 ZIP code in California.
Where does City of Modesto - South Turlock get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). City of Modesto - South Turlock Water Quality Report, CA. https://zipcheckup.com/water-system/ca5010023/
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title = {{City of Modesto - South Turlock Water Quality Report, CA}},
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url = {https://zipcheckup.com/water-system/ca5010023/}
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