Big Lake, MO
Contamination score
Higher = more contaminated vs. other cities.
Share this with friends & family you care about ❤️
Help someone you love know what's in their water — we'll email them Big Lake'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.
Get water alerts for Big Lake, MO
We'll email you when a new violation, lawsuit, or health report appears for Big Lake's water. Free, unsubscribe anytime.

Public water systems
HOLT COUNTY PWSD 1
- PWSID:
- MO1021304
- Source:
- Ground water
- Serves:
- 1,140 people
Big Lake Village Of Pws
- PWSID:
- MO1011182
- Source:
- Ground water
- Serves:
- 2,000 people
EPA & DEP violations
HOLT COUNTY PWSD 1
PWSID MO102130412 violationsMonitoring violation — HOLT COUNTY PWSD 1
low severityOpenEPA SDWIS violation 430 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Jul 1, 2025 · 1 year ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityOpenEPA SDWIS violation 431 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Jul 1, 2025 · 1 year ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 428 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Apr 1, 2023 · 3 years ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 429 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Apr 1, 2023 · 3 years ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 424 (code 3A) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began May 1, 2021 · 5 years ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 425 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Apr 1, 2021 · 5 years ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 426 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Apr 1, 2021 · 5 years ago · Source ↗
Other violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 427 (code 20) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Other violation · Began Aug 22, 2019 · 7 years ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 422 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Oct 1, 2018 · 8 years ago · Source ↗
Monitoring violation — HOLT COUNTY PWSD 1
low severityResolvedEPA SDWIS violation 423 (code 27) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · Monitoring violation · Began Oct 1, 2018 · 8 years ago · Source ↗
MCL exceedance — HOLT COUNTY PWSD 1
high severityHealth-basedResolvedEPA SDWIS violation 421 (code 02) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · MCL exceedance · Began Apr 1, 2016 · 10 years ago · Source ↗
MCL exceedance — HOLT COUNTY PWSD 1
high severityHealth-basedResolvedEPA SDWIS violation 420 (code 02) at HOLT COUNTY PWSD 1 (PWSID MO1021304).
EPA SDWIS · MCL exceedance · Began Jan 1, 2016 · 10 years ago · Source ↗
Big Lake Village Of Pws
PWSID MO10111825 violationsLEAD AND COPPER RULE REVISIONS — RPT violation
medium severityUnaddressedLEAD AND COPPER RULE REVISIONS RPT violation (Unaddressed).
EPA SDWIS · RPT · Began Jul 2, 2025 · 1 year ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2024 · 2 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedResolvedTTHM MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2024 · 2 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedResolvedTTHM MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2020 · 6 years ago · Source ↗
TTHM — MCL violation
high severityHealth-basedResolvedTTHM MCL violation (Resolved).
EPA SDWIS · MCL · Began Apr 1, 2020 · 6 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.