Sonoma County Csa 41-fitch Mountain
EPA ID: CA4910010 · 1,265 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Sonoma County Csa 41-fitch Mountain (CA4910010): 1 violation on record since 2021. Within the EPA violation records on file, Sonoma County Csa 41-fitch Mountain accumulated 1 violation, and every finding is recorded as resolved; the utility supplies water to approximately 1,265 people. Resolution of past violations is not a statement about current water quality.
Data: EPA SDWIS
Service Area Map
Coverage area for Sonoma County Csa 41-fitch Mountain Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Sonoma County Csa 41-fitch Mountain have a median household income of $103,048 and about 15,868 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 64% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Sonoma County Csa 41-fitch Mountain'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
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 3 detections recorded.
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
Sonoma County Csa 41-fitch Mountain (EPA ID: CA4910010) is a community water system in California that serves approximately 1,265 people from surface water sources.
This system serves ZIP code 95448 in Healdsburg.
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 |
|---|---|---|---|
| June 1, 2022 | 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 |
|---|---|---|
| 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.
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.
- 95448 - Healdsburg
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Sonoma County Csa 41-fitch Mountain (CA4910010) on EPA.gov.
Frequently Asked Questions
Is Sonoma County Csa 41-fitch Mountain water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Sonoma County Csa 41-fitch Mountain; 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 Sonoma County Csa 41-fitch Mountain serve?
Sonoma County Csa 41-fitch Mountain serves approximately 1,265 people across 1 ZIP code in California.
Where does Sonoma County Csa 41-fitch Mountain get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Sonoma County Csa 41-fitch Mountain (CA): 1 EPA Violation. https://zipcheckup.com/water-system/ca4910010/
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title = {{Sonoma County Csa 41-fitch Mountain (CA): 1 EPA Violation}},
year = {n.d.},
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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
Sonoma County Csa 41-fitch Mountain (EPA ID: CA4910010) - request the latest Consumer Confidence Report or ask about specific contaminants.