Pine Mountain Mutual Water Company
EPA ID: CA2300591 · 310 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Pine Mountain Mutual Water Company (CA2300591): 2 violations recorded with unresolved status in the SDWIS data used. EPA record snapshot: Pine Mountain Mutual Water Company, 2 open violations, 310 people served.
Data: EPA SDWIS
Service Area Map
Coverage area for Pine Mountain Mutual Water Company Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Pine Mountain Mutual Water Company have a median household income of $67,069 and about 14,627 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 55% 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?
Pine Mountain Mutual Water Company'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
Pine Mountain Mutual Water Company (EPA ID: CA2300591) is a community water system in California that serves approximately 310 people from surface water sources.
This system serves ZIP code 95490 in Willits.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 2 archived, 0 addressed, and 2 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 |
|---|---|---|---|
| April 1, 2025 | TTHM | Non-health-based | Archived |
| April 1, 2025 | Total Haloacetic Acids (HAA5) | Non-health-based | Archived |
| January 1, 2024 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| October 1, 2022 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| December 1, 2021 | Revised Total Coliform 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 | 2 | No |
| Total Haloacetic Acids (HAA5) | Monitoring & Reporting | 1 | No |
| TTHM | Monitoring & Reporting | 1 | No |
| Revised Total Coliform 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 | 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.
- 95490 - Willits
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Pine Mountain Mutual Water Company (CA2300591) on EPA.gov.
Frequently Asked Questions
Is Pine Mountain Mutual Water Company water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Pine Mountain Mutual Water Company serve?
Pine Mountain Mutual Water Company serves approximately 310 people across 1 ZIP code in California.
Where does Pine Mountain Mutual Water Company get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Pine Mountain Mutual Water Company (CA): 5 EPA Violations. https://zipcheckup.com/water-system/ca2300591/
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title = {{Pine Mountain Mutual Water Company (CA): 5 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ca2300591/}
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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
Pine Mountain Mutual Water Company (EPA ID: CA2300591) - request the latest Consumer Confidence Report or ask about specific contaminants.