Indiana American Water - Johnson County
EPA ID: IN5241005 · 86,813 people served · 12 ZIP codes
ZipCheckup's reading of EPA SDWIS for Indiana American Water - Johnson County (IN5241005): no EPA violations recorded in the last five years. Five years of EPA monitoring have produced no violations for Indiana American Water - Johnson County - the supplier serving 86,813 residents has kept every contaminant level within federal limits, a result that places it among the top-performing utilities for systems with a service population of comparable size.
Data: EPA SDWIS
Service Area Map
Coverage area for Indiana American Water - Johnson County Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Indiana American Water - Johnson County serves a community with a median household income of $86,969 and an estimated 320,003 residents across its service area. Approximately 49% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Indiana American Water - Johnson County's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 36 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS). 1 exceeds state limits.
Comparable Water Systems
Similar-sized systems in Indiana
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Indiana American Water - Johnson County (EPA ID: IN5241005) is a community water system in Indiana that serves approximately 86,813 people from groundwater sources.
This system provides water to 12 ZIP codes across 8 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by IN or modeled from parcel and building-footprint data.
- 46106 - Bargersville
- 46124 - Edinburgh
- 46131 - Franklin
- 46142 - Greenwood
- 46143 - Greenwood
- 46160 - Morgantown
- 46162 - Needham
- 46184 - Whiteland
- 46217 - Indianapolis
- 46227 - Indianapolis
- 46237 - Indianapolis
- 46259 - Indianapolis
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Indiana American Water - Johnson County (IN5241005) on EPA.gov.
Frequently Asked Questions
Is Indiana American Water - Johnson County water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Indiana American Water - Johnson County in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Indiana American Water - Johnson County serve?
Indiana American Water - Johnson County serves approximately 86,813 people across 12 ZIP codes in Indiana.
Where does Indiana American Water - Johnson County get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Indiana American Water - Johnson County: Serves 87K People. https://zipcheckup.com/water-system/in5241005/
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