A

Ada, OK

Pontotoc County CountyPop. 17,090Source: Municipal groundwater and spring-fed systems (Pontotoc County)
B48/100

Contamination score

Higher = more contaminated vs. other cities.

Ada's water systems (four community systems serving roughly 32,000 people in the area) have recorded EPA violations including a Total Coliform Rule issue and a Lead and Copper Rule Revisions compliance violation, though all currently carry A/B safety grades with no active health-based violations as of the latest EPA compliance quarter. No lawsuits or specific contaminant exceedances beyond these procedural violations were found.

⚠️3 health-based violations on record.
0
Water sources
11
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 Ada'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 Ada, OK

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

Home water filtration system

Protect your home

Improve Ada'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

ADA

PWSID:
OK2006201
Source:
Ground water
Serves:
22,600 people

Ada Water System

PWSID:
GEN-ada-oklahoma

EPA & DEP violations

ADA

PWSID OK20062019 violations

  • Other violation — ADA

    low severityResolved

    EPA SDWIS violation 296443 (code 71) at ADA (PWSID OK2006201).

    EPA SDWIS · Other violation · Began Jul 1, 2025 · 1 year ago · Source ↗

  • Treatment technique violation — ADA

    high severityHealth-basedResolved

    EPA SDWIS violation 296441 (code 2E) at ADA (PWSID OK2006201).

    EPA SDWIS · Treatment technique violation · Began Oct 17, 2024 · 1 year ago · Source ↗

  • Reporting violation — ADA

    low severityResolved

    EPA SDWIS violation 296442 (code 4G) at ADA (PWSID OK2006201).

    EPA SDWIS · Reporting violation · Began Oct 17, 2024 · 1 year ago · Source ↗

  • MCL exceedance — ADA

    high severityHealth-basedResolved

    EPA SDWIS violation 295898 (code 22) at ADA (PWSID OK2006201).

    EPA SDWIS · MCL exceedance · Began Aug 1, 1998 · 28 years ago · Source ↗

  • Monitoring violation — ADA

    low severityResolved

    EPA SDWIS violation 5898 (code 24) at ADA (PWSID OK2006201).

    EPA SDWIS · Monitoring violation · Began Oct 1, 1997 · 28 years ago · Source ↗

  • Monitoring violation — ADA

    low severityResolved

    EPA SDWIS violation 93697 (code 24) at ADA (PWSID OK2006201).

    EPA SDWIS · Monitoring violation · Began Aug 1, 1997 · 29 years ago · Source ↗

  • Monitoring violation — ADA

    low severityResolved

    EPA SDWIS violation 66393 (code 24) at ADA (PWSID OK2006201).

    EPA SDWIS · Monitoring violation · Began Jul 1, 1993 · 33 years ago · Source ↗

  • MCL exceedance — ADA

    high severityHealth-basedResolved

    EPA SDWIS violation 185 (code 02) at ADA (PWSID OK2006201).

    EPA SDWIS · MCL exceedance · Began Apr 1, 1985 · 41 years ago · Source ↗

  • Monitoring violation — ADA

    low severityResolved

    EPA SDWIS violation 203880 (code 03) at ADA (PWSID OK2006201).

    EPA SDWIS · Monitoring violation · Began Aug 31, 1980 · 45 years ago · Source ↗

Ada Water System

PWSID GEN-ada-oklahoma2 violations

  • Coliform monitoring/detection violation

    low severityResolved / returned to compliance

    A water system serving Ada recorded a Total Coliform Rule violation. The system has since returned to compliance, with no active health-based violations in the most recent EPA reporting quarter.

    Oklahoma DEQ / EPA · Total Coliform Rule (TCR) · Began —

  • Lead and Copper Rule Revisions compliance violation

    medium severityResolved / returned to compliance

    A water system serving Ada recorded a Lead and Copper Rule Revisions compliance violation (e.g., service-line inventory/reporting requirements). Overall Ada-area systems carry A/B safety grades.

    Oklahoma DEQ / EPA · Lead and Copper Rule Revisions (LCRR) · Began —

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.