Howell Mountain Mutual Water Company
EPA ID: CA2810001 · 1,240 people served · 5 ZIP codes
ZipCheckup's reading of EPA SDWIS for Howell Mountain Mutual Water Company (CA2810001): 2 past health-based violations, since resolved. Even though Howell Mountain Mutual Water Company accumulated 2 violations over five years, all have been formally resolved - the provider currently meets EPA standards for 1,240 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Howell Mountain Mutual Water Company Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Howell Mountain Mutual Water Company serves a community with a median household income of $116,534 and an estimated 18,668 residents across its service area. Approximately 74% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Howell 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
Detected Contaminants
How Howell Mountain Mutual Water Company compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 2 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 4 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS). 2 exceed state limits.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Howell Mountain Mutual Water Company (EPA ID: CA2810001) is a community water system in California that serves approximately 1,240 people from surface water sources.
This system provides water to 5 ZIP codes across 5 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 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 |
|---|---|---|---|
| January 1, 2023 | Haloacetic Acids (HAA5) | Health-based | Resolved |
| April 1, 2021 | Haloacetic Acids (HAA5) | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | Yes |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
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.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Howell Mountain Mutual Water Company (CA2810001) on EPA.gov.
Frequently Asked Questions
Is Howell Mountain Mutual Water Company water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Howell Mountain Mutual Water Company; its 2 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Howell Mountain Mutual Water Company serve?
Howell Mountain Mutual Water Company serves approximately 1,240 people across 5 ZIP codes in California.
Where does Howell 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.). Howell Mountain Mutual Water Company: 2 Health Violations. https://zipcheckup.com/water-system/ca2810001/
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title = {{Howell Mountain Mutual Water Company: 2 Health Violations}},
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url = {https://zipcheckup.com/water-system/ca2810001/}
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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
Howell Mountain Mutual Water Company (EPA ID: CA2810001) - request the latest Consumer Confidence Report or ask about specific contaminants.