C44/100
Plainfield Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 38,977 residents · Indiana
What's In Plainfield's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
strontium | 2000.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – March 8, 2024Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: October 1, 2022 – October 26, 2022Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
PLAINFIELD RE-ENTRY EDUCATIONAL FACILITY
Population Served
4,500
Water Source
Groundwater
System ID
IN5232007
PLAINFIELD WATER WORKS
Population Served
34,477
Water Source
Groundwater
System ID
IN5232020
Frequently Asked Questions About Plainfield Water
Is Plainfield tap water safe to drink?
Plainfield, Indiana tap water receives a grade of C (44/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 67 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Plainfield's water?
Of the 66 contaminants tested in Plainfield's water supply, the most notable include Lead (90th percentile), strontium. No contaminants exceed EPA legal limits. 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Plainfield have any water quality violations?
Yes, Plainfield has 67 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, Other, MR. 9 of these are health-based violations, which are the most serious category.
Do I need a water filter in Plainfield?
Plainfield water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 2 contaminant(s) exceed these stricter goals.
Where does Plainfield's tap water come from?
Plainfield's drinking water is sourced from groundwater and supplied by PLAINFIELD RE-ENTRY EDUCATIONAL FACILITY and 1 other water system(s). The system serves approximately 38,977 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Plainfield's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Plainfield's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Plainfield's water compare to other cities in Indiana?
Plainfield's water quality score of 44/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Indiana state page to see how all cities in the state compare.
What should I do if I'm concerned about Plainfield's water quality?
If you have concerns about Plainfield's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (PLAINFIELD RE-ENTRY EDUCATIONAL FACILITY) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.