Cass County Water Quality: 3 Cities Ranked by the Records

Name: Cass County Water Quality Data (2026)
Creator: PurityMap
License: https://creativecommons.org/licenses/by/4.0/

Cass County, Missouri: 3 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.

Find my system Open on the map Private wells in Cass County

Across the county's systems

Highest result for each contaminant

One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.

LithiumDetected in 2 systems of 3 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest103 µg/L

RAYMORE PWS103 µg/LSample date: 2024-01-08 to 2024-10-07
BELTON PWS53.7 µg/LSample date: 2024-01-22 to 2024-10-28
HARRISONVILLE PWSNot detected · below 9.0 µg/L lab reporting limitSample date: 2025-01-14 to 2025-10-14

Lead (90th percentile)Detected in 1 system of 3 tested15 µg/L federal action level · US EPAHighest2.41 µg/L

HARRISONVILLE PWS2.41 µg/LMonitoring period: 2023–2025
BELTON PWSNot detectedMonitoring period: 2022–2024
RAYMORE PWSNot detectedMonitoring period: 2022–2024

Perfluorobutanoic acid (PFBA)Detected in 1 system of 3 testedNo federal or state limit; shown for transparencyHighest5.4 ng/L

BELTON PWS5.4 ng/LSample date: 2024-01-22 to 2024-10-28
HARRISONVILLE PWSNot detected · below 5.0 ng/L lab reporting limitSample date: 2025-01-14 to 2025-10-14
RAYMORE PWSNot detected · below 5.0 ng/L lab reporting limitSample date: 2024-01-08 to 2024-10-07

28 PFAS tested, none detected in any systemShow

Tested in these 3 systems: BELTON PWS, HARRISONVILLE PWS, RAYMORE PWS

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorobutanesulfonic acid (PFBS)
Perfluorodecanoic acid (PFDA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

3 cities

Cities ranked by the records

1
BeltonBELTON PWS
PFAS detected, within limit
Open city report →
2
RaymoreRAYMORE PWS
No PFAS detected
Open city report →
3
HarrisonvilleHARRISONVILLE PWS
No PFAS detectedLead below action level
Open city report →

Showing 3 of 3 cities · scores are system-level, not tap tests

Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county 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.

PFAS in Cass CountyPFAS detected in 1 of 3 cities; none had a sample above a 2024 EPA limit

4.0 ng/L federal MCL · PFOS, ng/LPFAS in Missouri

Lead

0of 3 cities above the 15 µg/L action level

Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.

Lead in Missouri

Who supplies the county

Largest water systems

BeltonBELTON PWS · MO1010061
23,598 served
RaymoreRAYMORE PWS · MO1010675
21,517 served
HarrisonvilleHARRISONVILLE PWS · MO1010349
10,250 served

Questions

Frequently asked

How does Cass County tap water compare across cities?

PurityMap ranks 3 cities in Cass County 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 Belton's main water system: BELTON PWS · PWSID MO1010061 · 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 Cass County cities had a PFAS sample above a 2024 EPA limit?

None of the 3 Cass County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 1.

Is there lead in Cass County tap water?

Utilities report lead as a 90th-percentile result from home taps. 1 of 3 Cass County 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.

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