Updated 2026-09-16

County water report

Clinton County Water Quality

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

Clinton County, Iowa: one city report 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

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.

LithiumIOWA-AMERICAN WTR CO-CLINTON DISTRICT10 µg/L EPA health reference level (screening, not a legal limit) · US EPA67.4 µg/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT67.4 µg/LSample date: 2023-04-10 to 2023-10-10

Lead (90th percentile)IOWA-AMERICAN WTR CO-CLINTON DISTRICT15 µg/L federal action level · US EPA2 µg/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT2 µg/LMonitoring period: 2023–2025

Perfluorobutanesulfonic acid (PFBS)IOWA-AMERICAN WTR CO-CLINTON DISTRICT2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPA11.7 ng/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT11.7 ng/LSample date: 2023-04-10 to 2023-10-10

Perfluoro-3-methoxypropanoic acid (PFMPA)IOWA-AMERICAN WTR CO-CLINTON DISTRICTNo federal or state limit; shown for transparency10.4 ng/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT10.4 ng/LSample date: 2023-04-10 to 2023-10-10

Perfluoro-4-methoxybutanoic acid (PFMBA)IOWA-AMERICAN WTR CO-CLINTON DISTRICTNo federal or state limit; shown for transparency3 ng/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT3 ng/LSample date: 2023-04-10 to 2023-10-10

Perfluorobutanoic acid (PFBA)IOWA-AMERICAN WTR CO-CLINTON DISTRICTNo federal or state limit; shown for transparency647.9 ng/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT647.9 ng/LSample date: 2023-04-10 to 2023-10-10

Perfluoropentanoic acid (PFPeA)IOWA-AMERICAN WTR CO-CLINTON DISTRICTNo federal or state limit; shown for transparency18.1 ng/L

IOWA-AMERICAN WTR CO-CLINTON DISTRICT18.1 ng/LSample date: 2023-04-10 to 2023-10-10

24 PFAS tested, none detected in this systemShow

Tested in this system: IOWA-AMERICAN WTR CO-CLINTON DISTRICT

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)
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)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

1 city

Cities ranked by the records

1
ClintonIOWA-AMERICAN WTR CO-CLINTON DISTRICT
PFAS detected, within limitLead below action level
Open city report →

Showing 1 of 1 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 Clinton CountyPFAS detected in 1 of 1 city; none above a federal limit

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

Lead

0of 1 city 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 Iowa

Who supplies the county

Largest water systems

ClintonIOWA-AMERICAN WTR CO-CLINTON DISTRICT · IA2326048
24,769 served

Questions

Frequently asked

How does Clinton County tap water compare across cities?

PurityMap ranks 1 city in Clinton 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 Clinton's main water system: IOWA-AMERICAN WTR CO-CLINTON DISTRICT · PWSID IA2326048 · Purity Score 98 (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 Clinton County cities have PFAS above the federal limit?

None of the 1 Clinton County cities on record had a regulated PFAS above the 2024 federal limit in EPA's UCMR 5 testing. PFAS were detected below the limit in 1.

Is there lead in Clinton County tap water?

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