Johnson County Water Quality: 2 Cities Ranked by the Records

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

Johnson County, Indiana: 2 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 Johnson 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 1 system of 2 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest10 µg/L

INDIANA AMERICAN WATER - JOHNSON COUNTY10 µg/LSample date: 2023-07-11 to 2024-01-07
BARGERSVILLE WATER DEPARTMENTNot detected · below 9.0 µg/L lab reporting limitSample date: 2024-10-23 to 2025-04-01

Lead (90th percentile)Detected in 2 systems15 µg/L federal action level · US EPAHighest2.8 µg/L

BARGERSVILLE WATER DEPARTMENT2.8 µg/LMonitoring period: 2025–2025
INDIANA AMERICAN WATER - JOHNSON COUNTY2 µg/LMonitoring period: 2022–2024

Perfluorohexanoic acid (PFHxA)Detected in 2 systems400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest5.1 ng/L

BARGERSVILLE WATER DEPARTMENT5.1 ng/LSample date: 2024-10-23 to 2025-04-01
INDIANA AMERICAN WATER - JOHNSON COUNTY4.5 ng/LSample date: 2023-07-11 to 2024-01-07

Perfluorobutanoic acid (PFBA)Detected in 1 system of 2 testedNo federal or state limit; shown for transparencyHighest6 ng/L

BARGERSVILLE WATER DEPARTMENT6 ng/LSample date: 2024-10-23 to 2025-04-01
INDIANA AMERICAN WATER - JOHNSON COUNTYNot detected · below 5.0 ng/L lab reporting limitSample date: 2023-07-11 to 2024-01-07

Perfluoropentanoic acid (PFPeA)Detected in 2 systemsNo federal or state limit; shown for transparencyHighest8.2 ng/L

BARGERSVILLE WATER DEPARTMENT8.2 ng/LSample date: 2024-10-23 to 2025-04-01
INDIANA AMERICAN WATER - JOHNSON COUNTY4.9 ng/LSample date: 2023-07-11 to 2024-01-07

26 PFAS tested, none detected in any systemShow

Tested in these 2 systems: BARGERSVILLE WATER DEPARTMENT, INDIANA AMERICAN WATER - JOHNSON COUNTY

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)
Perfluorononanoic acid (PFNA)
Perfluorooctanesulfonic acid (PFOS)
Perfluorooctanoic acid (PFOA)
Perfluoropentanesulfonic acid (PFPeS)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)

2 cities

Cities ranked by the records

1
GreenwoodINDIANA AMERICAN WATER - JOHNSON COUNTY
PFAS detected, within limitLead below action level
Open city report →
2
BargersvilleBARGERSVILLE WATER DEPARTMENT
PFAS detected, within limitLead below action level
Open city report →

Showing 2 of 2 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 Johnson CountyPFAS detected in 2 of 2 cities; none had a sample above a 2024 EPA limit

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

Lead

0of 2 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 Indiana

Who supplies the county

Largest water systems

GreenwoodINDIANA AMERICAN WATER - JOHNSON COUNTY · IN5241005
86,813 served
BargersvilleBARGERSVILLE WATER DEPARTMENT · IN5241001
34,418 served

Questions

Frequently asked

How does Johnson County tap water compare across cities?

PurityMap ranks 2 cities in Johnson 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 Greenwood's main water system: INDIANA AMERICAN WATER - JOHNSON COUNTY · PWSID IN5241005 · 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 Johnson County cities had a PFAS sample above a 2024 EPA limit?

None of the 2 Johnson 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 2.

Is there lead in Johnson County tap water?

Utilities report lead as a 90th-percentile result from home taps. 2 of 2 Johnson 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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