Howell Mountain Mutual Water Company
Surface water · Private · PO Box 9
This page shows official EPA compliance records for Howell Mountain Mutual Water Company, including PFAS monitoring data, violation history, contaminant test results, treatment options, and certified testing lab links for California.
Howell Mountain Mutual Water Company is a surface water system serving 1,240 residents in California (PWSID: CA2810001). No open health-based violations are recorded in the EPA federal database for this system.
At a Glance
CA2810001Intelligence Summary · Howell Mountain Mutual Water Company
No Concerns Detected
Water meets all safety standards with no detected exceedances.
No open health violations on record. This utility has no active EPA violations involving contaminants exceeding legal limits. Always verify with your utility's Consumer Confidence Report for annual test results.
Utility Overview
Population Served
1,240
Source Type
Surface water
Ownership
Private
PWSID
CA2810001
Detected Contaminants
CCR data ingestion in progress
Contaminant detection levels from Consumer Confidence Reports are being parsed and linked to utilities. Check back soon, or view the official report directly from the EPA links below.
View on EPA ECHOViolation History
Showing 25 of 37 — view all on EPA ECHO ↗Sourced from EPA SDWIS. Health-based violations mean a contaminant exceeded the legal limit. Monitoring/Reporting violations mean required test results were not submitted to EPA — not necessarily that the water is unsafe.
Violation — Haloacetic Acids (HAA5)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
ResolvedViolation — Total Trihalomethanes (TTHMs)
ResolvedViolation — Haloacetic Acids (HAA5)
Resolved3 additional monitoring/reporting failures
Required test submissions not filed with EPA — no contaminant data recorded. These are administrative failures, not health violations.
Filtration Recommendations
Based on contaminants found in health-based violations, these treatment methods are most relevant for residents.
Reverse Osmosis
Reverse osmosis (RO) is the most comprehensive point-of-use water treatment technology available for residential use.
Activated Carbon
Activated carbon is the most widely used residential water treatment technology.
What should I do next?
No active health-based violations are currently shown in this dataset for Howell Mountain Mutual Water Company. Review the full contaminant profile and last verified date before drawing conclusions.
Howell Mountain Mutual Water Company — Water Quality FAQs
Explore This Water System
California drinking water report
State-level utility directory, open violations, and PFAS data
Official EPA contamination & sampling records
Violation history, PFAS detections, and official source links
Certified water testing labs in California
State-certified labs for PFAS, lead, nitrate, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and whole-home filtration guides
About this data
Data sources, update cadence, and accuracy notes
LOS ANGELES-CITY, DEPT. OF WATER & POWER
Nearby water system — compare violations and PFAS records
EAST BAY MUD
Nearby water system — compare violations and PFAS records
Common Questions About This Water System
Is there PFAS data for California water systems?
Official EPA UCMR 5 PFAS monitoring records for California water systems
Are there EPA violations on record for Howell Mountain Mutual Water Company?
22 health-based violations recorded in EPA SDWIS
How do I get my water tested in California?
State-certified labs for PFAS, lead, nitrate, and bacteria testing
What water treatment options address these contaminants?
Reverse osmosis, activated carbon, and whole-home filtration guides with NSF certification data
Where can I find official sampling records for this system?
Official EPA SDWIS violations and UCMR 5 PFAS sampling records with source links
Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.
Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data
Related Pages
Data Sources & Provenance
All data on this page is sourced from official U.S. government or public datasets.
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At a Glance
Service area match is likely but not guaranteed. Your water bill is the most reliable way to confirm your provider.
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Data Sources