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Updated 2026-09-16
State water report

Missouri Water Quality: 63 Cities Ranked by the Records

Water quality across 63 cities in Missouri, drawn from EPA drinking-water records. Each city page shows the measured contaminants and a reproducible Purity Score.

Finding by finding

What Missouri'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. 5 cities have a past health-based violation on record.

PFAS above a 2024 limit

MCL

3of 63 cities

Cities whose system reported a PFAS above its federal limit.

PFOS in Missouri →
City rankings

Missouri cities ranked by the records

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

  1. 1
    St Charles County PwsdST CHARLES COUNTY PWSD 2 · MO6024530
    Report →
  2. 2
    Lees SummitLEES SUMMIT PWS · MO1010459
    Report →
  3. 3
    St. CharlesST CHARLES PWS · MO6010707
    Report →
  4. 4
    Jefferson Cons Pwsd CJEFFERSON CO CONS PWSD C 1 · MO6024295
    Report →
  5. 5
    KirkwoodKIRKWOOD PWS · MO6010430
    Report →
  6. 6
    BeltonBELTON PWS · MO1010061
    Report →
  7. 7
    RaymoreRAYMORE PWS · MO1010675
    Report →
  8. 8
    Grain ValleyGRAIN VALLEY PWS · MO1010320
    Report →
  9. 9
    FestusFESTUS PWS · MO6010276
    Report →
  10. 10
    KearneyKEARNEY PWS · MO1010416
    Report →

Showing the top 10 of 63 scored cities.

See all 63 in the table

63 cities, highest Purity Score first

  1. 1St Charles County Pwsd
    ST CHARLES COUNTY PWSD 2 · PWSID MO6024530 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 6.5 ng/L detected, no federal or state limitDetected
  2. 2Lees Summit
    LEES SUMMIT PWS · PWSID MO1010459 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 5.7 ng/L detected, no federal or state limitDetected
  3. 3St. Charles
    ST CHARLES PWS · PWSID MO6010707 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  4. 4Jefferson Cons Pwsd C
    JEFFERSON CO CONS PWSD C 1 · PWSID MO6024295 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  5. 5Kirkwood
    KIRKWOOD PWS · PWSID MO6010430 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  6. 6Belton
    BELTON PWS · PWSID MO1010061 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 5.4 ng/L detected, no federal or state limitDetected
  7. 7Raymore
    RAYMORE PWS · PWSID MO1010675 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  8. 8Grain Valley
    GRAIN VALLEY PWS · PWSID MO1010320 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  9. 9Festus
    FESTUS PWS · PWSID MO6010276 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 9.2 ng/L detected, no federal or state limitDetected
  10. 10Kearney
    KEARNEY PWS · PWSID MO1010416 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    PFBA 6.5 ng/L detected, no federal or state limitDetected
  11. 11Excelsior Springs
    EXCELSIOR SPRINGS PWS · PWSID MO1010261 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detectedNot detected
  12. 12Independence
    INDEPENDENCE PWS · PWSID MO1010399 · Purity Score 99/100 (Excellent) · Confidence: moderate · Assessed at the water-system level
    No PFAS detected; lead 1.1 µg/LDetected
Showing 12 of 63.

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 Missouri compares with other states.

By contaminant

PFAS and lead in Missouri

Counties

Missouri counties

30 counties with city reports
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Suppliers

Largest water systems

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Full indexAll 63 Missouri city reports, A–Z
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Questions

Missouri water, frequently asked

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How does Missouri tap water compare across cities?

PurityMap ranks 63 cities in Missouri 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 St Charles County Pwsd's main water system: ST CHARLES COUNTY PWSD 2 · PWSID MO6024530 · 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 Missouri cities have PFAS above the federal limit?

3 cities of 63 had at least one regulated PFAS (PFOA, PFOS or PFHxS) measured above the 2024 federal limit in EPA's UCMR 5 testing, including Cole County Pwsd (PFOA 5.8 ng/L), St. Peters (PFOA 4.9 ng/L), Springfield (PFOS 4.3 ng/L). PFAS were detected at any level in 23.

Is there lead in Missouri tap water?

Utilities report lead as a 90th-percentile result from home taps. 50 of 63 Missouri 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 Missouri water systems had drinking-water violations?

5 cities in Missouri 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.

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