D

Diablo Grande, CA

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️8 health-based violations on record.
0
Water sources
14
Violations
0
Pollution sources
0
Self-reported
0
Lawsuits

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Reported illness & cancer claims

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Self-reported issues

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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

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Public water systems

WESTERN HILLS WATER DISTRICT/DIABLO GRAN

PWSID:
CA5010039
Source:
Surface water
Serves:
2,000 people

EPA & DEP violations

WESTERN HILLS WATER DISTRICT/DIABLO GRAN

PWSID CA501003914 violations

  • Monitoring violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    low severityResolved

    EPA SDWIS violation 1010055 (code 52) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · Monitoring violation · Began Jan 1, 2018 · 8 years ago · Source ↗

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010054 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2017 · 9 years ago · Source ↗

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010052 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

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

  • Monitoring violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    low severityResolved

    EPA SDWIS violation 1010053 (code 52) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · Monitoring violation · Began Oct 1, 2016 · 9 years ago · Source ↗

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010051 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

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

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010050 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

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

  • Monitoring violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    low severityResolved

    EPA SDWIS violation 1010049 (code 52) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · Monitoring violation · Began Oct 1, 2015 · 10 years ago · Source ↗

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010048 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · MCL exceedance · Began Jan 1, 2015 · 11 years ago · Source ↗

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010047 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · MCL exceedance · Began Oct 1, 2014 · 11 years ago · Source ↗

  • MCL exceedance — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 1010046 (code 02) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · MCL exceedance · Began Jul 1, 2014 · 12 years ago · Source ↗

  • Monitoring violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    low severityResolved

    EPA SDWIS violation 1010045 (code 27) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · Monitoring violation · Began Oct 1, 2009 · 16 years ago · Source ↗

  • Other violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    low severityResolved

    EPA SDWIS violation 910043 (code 71) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

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

  • Treatment technique violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    high severityHealth-basedResolved

    EPA SDWIS violation 610046 (code 41) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · Treatment technique violation · Began May 1, 2006 · 20 years ago · Source ↗

  • Other violation — WESTERN HILLS WATER DISTRICT/DIABLO GRAN

    low severityResolved

    EPA SDWIS violation 510012 (code 71) at WESTERN HILLS WATER DISTRICT/DIABLO GRAN (PWSID CA5010039).

    EPA SDWIS · Other violation · Began Jul 1, 2005 · 21 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

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