O

Ottawa, IL

—no score

Contamination score

Higher = more contaminated vs. other cities.

⚠️1 health-based violation on record.
0
Water sources
20
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

Ottawa

PWSID:
IL0990800
Source:
Ground water
Serves:
18,097 people

EPA & DEP violations

Ottawa

PWSID IL099080020 violations

  • Total Haloacetic Acids (HAA5) — MR violation

    medium severityResolved

    Total Haloacetic Acids (HAA5) MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗

  • TTHM — MR violation

    medium severityResolved

    TTHM MR violation (Resolved).

    EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗

  • LEAD AND COPPER RULE REVISIONS — RPT violation

    medium severityUnaddressed

    LEAD AND COPPER RULE REVISIONS RPT violation (Unaddressed).

    EPA SDWIS · RPT · Began Jul 2, 2025 · 1 year ago · Source ↗

  • Combined Radium (-226 and -228) — MCL violation

    high severityHealth-basedResolved

    Combined Radium (-226 and -228) MCL violation (Resolved).

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

  • TTHM — MR violation

    medium severityResolved

    TTHM MR violation (Resolved).

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

  • Total Haloacetic Acids (HAA5) — MR violation

    medium severityResolved

    Total Haloacetic Acids (HAA5) MR violation (Resolved).

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

  • Combined Radium (-226 and -228) — MR violation

    medium severityResolved

    Combined Radium (-226 and -228) MR violation (Resolved).

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

  • Combined Radium (-226 and -228) — MR violation

    medium severityResolved

    Combined Radium (-226 and -228) MR violation (Resolved).

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

  • TTHM — MR violation

    medium severityResolved

    TTHM MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2022 · 4 years ago · Source ↗

  • Total Haloacetic Acids (HAA5) — MR violation

    medium severityResolved

    Total Haloacetic Acids (HAA5) MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2022 · 4 years ago · Source ↗

  • 1,1,2-Trichloroethane — MR violation

    medium severityResolved

    1,1,2-Trichloroethane MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Trichloroethylene — MR violation

    medium severityResolved

    Trichloroethylene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • 1,1-Dichloroethylene — MR violation

    medium severityResolved

    1,1-Dichloroethylene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • 1,1,1-Trichloroethane — MR violation

    medium severityResolved

    1,1,1-Trichloroethane MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Xylenes, Total — MR violation

    medium severityResolved

    Xylenes, Total MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Toluene — MR violation

    medium severityResolved

    Toluene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • trans-1,2-Dichloroethylene — MR violation

    medium severityResolved

    trans-1,2-Dichloroethylene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Ethylbenzene — MR violation

    medium severityResolved

    Ethylbenzene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • Carbon tetrachloride — MR violation

    medium severityResolved

    Carbon tetrachloride MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

  • cis-1,2-Dichloroethylene — MR violation

    medium severityResolved

    cis-1,2-Dichloroethylene MR violation (Resolved).

    EPA SDWIS · MR · Began Jan 1, 2020 · 6 years ago · Source ↗

Water-related lawsuits

No lawsuits on record.

In the news & sources

No coverage linked yet.