Cal Am - Dunnigan
EPA ID: CA5700712 · 602 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Cal Am - Dunnigan (CA5700712): no EPA violations recorded in the last five years. EPA data: Cal Am - Dunnigan - zero violations, five years, 602 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Cal Am - Dunnigan Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Cal Am - Dunnigan serves a community with a median household income of $78,875 and an estimated 38,787 residents across its service area. Approximately 76% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Cal Am - Dunnigan's water is pumped from underground aquifers. 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
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
Cal Am - Dunnigan (EPA ID: CA5700712) is a community water system in California that serves approximately 602 people from groundwater sources.
This system serves ZIP code 95695 in Woodland.
Violation History
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: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 95695 - Woodland
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Cal Am - Dunnigan (CA5700712) on EPA.gov.
Frequently Asked Questions
Is Cal Am - Dunnigan water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Cal Am - Dunnigan 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 Cal Am - Dunnigan serve?
Cal Am - Dunnigan serves approximately 602 people across 1 ZIP code in California.
Where does Cal Am - Dunnigan get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Cal Am - Dunnigan Water Quality Report, CA. https://zipcheckup.com/water-system/ca5700712/
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author = {{ZipCheckup}},
title = {{Cal Am - Dunnigan Water Quality Report, CA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ca5700712/}
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