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Updated 2026-09-16
State water report

Indiana Water Quality: 71 Cities Ranked by the Records

Water quality across 71 cities in Indiana, drawn from EPA drinking-water records. Each city page shows the measured contaminants and a reproducible Purity Score.

Finding by finding

What Indiana's records show

Counts of cities whose serving system reported each result. There is no statewide score: PurityMap does not average local records into a statewide safety verdict. 3 cities have a past health-based violation on record.

PFAS above a 2024 limit

MCL

9of 71 cities

Cities whose system reported a PFAS above its federal limit.

PFOS in Indiana →

Nitrate above the MCL

MCL

0of 71 cities

Cities whose system reported nitrate above 10 mg/L.

About nitrate →

Hard or very hard

No federal limit

1of 71 cities

Above 120 mg/L as CaCO₃ (7 gpg) on the USGS scale, of 1 cities with a hardness value.

About hard water →
City rankings

Indiana cities ranked by the records

Highest first. A summary of each serving system’s record, not a safety verdict.

  1. 1
    LafayetteLAFAYETTE WATER WORKS · IN5279013
    Report →
  2. 2
    BrownsburgBROWNSBURG WATER WORKS · IN5232002
    Report →
  3. 3
    EllettsvilleELLETTSVILLE WATER WORKS · IN5253004
    Report →
  4. 4
    HuntertownHUNTERTOWN WATER WORKS · IN5202007
    Report →
  5. 5
    SpeedwaySPEEDWAY WATER WORKS · IN5249008
    Report →
  6. 6
    BoonvilleCITY OF BOONVILLE · IN5287001
    Report →
  7. 7
    EvansvilleEVANSVILLE WATER UTILITY · IN5282002
    Report →
  8. 8
    Crown PointCROWN POINT WATER WORKS · IN5245008
    Report →
  9. 9
    ScherervilleSCHERERVILLE WATER DEPARTMENT · IN5245041
    Report →
  10. 10
    GreenfieldGREENFIELD WATER UTILITY · IN5230004
    Report →

Showing the top 10 of 71 scored cities.

See all 71 in the table

71 cities, highest Purity Score first

  1. 1Lafayette
    LAFAYETTE WATER WORKS · PWSID IN5279013 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 0.45 µg/LDetected
  2. 2Brownsburg
    BROWNSBURG WATER WORKS · PWSID IN5232002 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFPeA 3.5 ng/L detected, no federal or state limitDetected
  3. 3Ellettsville
    ELLETTSVILLE WATER WORKS · PWSID IN5253004 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  4. 4Huntertown
    HUNTERTOWN WATER WORKS · PWSID IN5202007 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  5. 5Speedway
    SPEEDWAY WATER WORKS · PWSID IN5249008 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFAS detected, none above a limitDetected
  6. 6Boonville
    CITY OF BOONVILLE · PWSID IN5287001 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  7. 7Evansville
    EVANSVILLE WATER UTILITY · PWSID IN5282002 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 1 µg/LDetected
  8. 8Crown Point
    CROWN POINT WATER WORKS · PWSID IN5245008 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 0.7 µg/LDetected
  9. 9Schererville
    SCHERERVILLE WATER DEPARTMENT · PWSID IN5245041 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 1 µg/LDetected
  10. 10Greenfield
    GREENFIELD WATER UTILITY · PWSID IN5230004 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 0.58 µg/LDetected
  11. 11Jasper
    JASPER MUNICIPAL WATER UTILITY · PWSID IN5219009 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 5.2 ng/L detected, no federal or state limit; lead 0.95 µg/LDetected
  12. 12Griffith
    GRIFFITH WATER DEPARTMENT · PWSID IN5245019 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 1.01 µg/LDetected
Showing 12 of 71.

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no state score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works. See how Indiana compares with other states.

By contaminant

PFAS, lead and hard water in Indiana

Counties

Indiana counties

41 counties with city reports
Show all 41 counties
Suppliers

Largest water systems

All water systems →
Full indexAll 71 Indiana city reports, A–Z
Next step

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Only after a city report names a finding, match a treatment certified for it.

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Questions

Indiana water, frequently asked

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How does Indiana tap water compare across cities?

PurityMap ranks 71 cities in Indiana by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Lafayette's main water system: LAFAYETTE WATER WORKS · PWSID IN5279013 · Purity Score 100 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.

How many Indiana cities have PFAS above the federal limit?

9 cities of 71 had at least one regulated PFAS (PFOA, PFOS or PFHxS) measured above the 2024 federal limit in EPA's UCMR 5 testing, including Brown County (PFOA 12.9 ng/L), South Bend (PFHxS 25.6 ng/L), Pike-Gibson (PFOA 7.9 ng/L). PFAS were detected at any level in 22.

Is there lead in Indiana tap water?

Utilities report lead as a 90th-percentile result from home taps. 63 of 71 Indiana cities reported a value above zero, and none was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

Have Indiana water systems had drinking-water violations?

3 cities in Indiana have a health-based violation in the federal SDWIS record within about the last ten years. Each city report lists the contaminant, year and whether it was resolved.

Does Indiana have hard water?

Hardness is published in utility water-quality reports for 1 Indiana city on record; the hardest is Fort Wayne at 7.6 grains per gallon. Hardness affects scale and appliances; it is not a health finding.

Limits, sources and corrections

A statewide page cannot tell you what reaches a specific address. Water quality varies by supplier, sampling period and household plumbing; open a city report for the evidence behind a local result.

Sources: EPA UCMR 5 (PFAS, 2024), SDWIS Lead and Copper Rule 90th-percentile results and health-based violations, and utility Consumer Confidence Reports where on file. Every city report links its dated source records.

Updated 2026-09-16. How PurityMap analyzes water data · Report an error