D

Deer Park, CA

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️31 health-based violations on record.
0
Water sources
37
Violations
0
Pollution sources
0
Self-reported
0
Lawsuits

Share this with friends & family you care about ❤️

Help someone you love know what's in their water — we'll email them Deer Park's report. No sign-ups, no list.

Reported illness & cancer claims

No claims reported yet. Be the first to add one.

Claims are aggregated from public records and community reports and may be unverified. If you believe your illness is linked to local water, request a consultation.

Self-reported issues

No issues reported yet. Be the first to report one.

Pollution sources & reported claims near your water

Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.

Critical High Medium Reported claim

Get water alerts for Deer Park, CA

We'll email you when a new violation, lawsuit, or health report appears for Deer Park's water. Free, unsubscribe anytime.

Home water filtration system

Protect your home

Improve Deer Park's water

A certified filtration system can remove lead, PFAS, nitrates, and the contaminants flagged on this page. Get a free, no-obligation quote tailored to your home.

What are you interested in?

By submitting you agree to be contacted about water treatment options.

Public water systems

HOWELL MOUNTAIN MUTUAL WATER COMPANY

PWSID:
CA2810001
Source:
Surface water
Serves:
1,240 people

EPA & DEP violations

HOWELL MOUNTAIN MUTUAL WATER COMPANY

PWSID CA281000137 violations

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403015 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2023 · 3 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403014 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2022 · 3 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403013 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2022 · 4 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403012 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2021 · 5 years ago · Source ↗

  • Monitoring violation — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    low severityResolved

    EPA SDWIS violation 9403011 (code 52) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · Monitoring violation · Began Oct 1, 2020 · 5 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403009 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2016 · 9 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403008 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2016 · 10 years ago · Source ↗

  • Monitoring violation — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    low severityResolved

    EPA SDWIS violation 9403007 (code 03) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · Monitoring violation · Began Jan 1, 2015 · 11 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403006 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2013 · 13 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 9403005 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2013 · 13 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1103040 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2011 · 15 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1103038 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2011 · 15 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1103039 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2011 · 15 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1103036 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2010 · 15 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1103037 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2010 · 15 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003034 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2010 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003035 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2010 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003032 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2010 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003033 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2010 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003029 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2010 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003030 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2010 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003028 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2009 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 1003031 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2009 · 16 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903019 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2009 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903023 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2009 · 17 years ago · Source ↗

  • Monitoring violation — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    low severityResolved

    EPA SDWIS violation 903025 (code 27) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · Monitoring violation · Began Jul 1, 2009 · 17 years ago · Source ↗

  • Monitoring violation — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    low severityResolved

    EPA SDWIS violation 903026 (code 27) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · Monitoring violation · Began Jul 1, 2009 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903018 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2009 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903022 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2009 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903017 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2009 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903016 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2008 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 903021 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2008 · 17 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 803015 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2008 · 18 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 803020 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2008 · 18 years ago · Source ↗

  • Monitoring violation — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    low severityResolved

    EPA SDWIS violation 803024 (code 27) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · Monitoring violation · Began Jul 1, 2008 · 18 years ago · Source ↗

  • Monitoring violation — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    low severityResolved

    EPA SDWIS violation 803027 (code 27) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · Monitoring violation · Began Jul 1, 2008 · 18 years ago · Source ↗

  • MCL exceedance — HOWELL MOUNTAIN MUTUAL WATER COMPANY

    high severityHealth-basedResolved

    EPA SDWIS violation 803014 (code 02) at HOWELL MOUNTAIN MUTUAL WATER COMPANY (PWSID CA2810001).

    EPA SDWIS · MCL exceedance · Began Apr 1, 2008 · 18 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.