B78/100
Peoria Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,806 residents · Illinois
What's In Peoria's Tap Water?
51
Contaminants Tested
1
Exceed EPA Limits
1
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFHxS | 0.014 µg/L | 0.010 µg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
4
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: August 22, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 2, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 2Unresolved
Treatment technique violation
When: October 17, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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
LIMESTONE-WALTERS PWD
Population Served
2,023
Water Source
Purchased Groundwater
System ID
IL1430020
PLEASANT VALLEY PWD
Population Served
3,783
Water Source
Groundwater
System ID
IL1435470
Frequently Asked Questions About Peoria Water
Is Peoria tap water safe to drink?
Peoria, Illinois tap water receives a grade of B (78/100), which is considered good. Out of 51 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Peoria's water?
Of the 51 contaminants tested in Peoria's water supply, the most notable include PFHxS, Lead (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Peoria have any water quality violations?
Yes, Peoria has 22 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, TT. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Peoria?
Based on EPA data, using a water filter in Peoria is recommended. 1 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Peoria's tap water come from?
Peoria's drinking water is sourced from purchased groundwater and supplied by LIMESTONE-WALTERS PWD and 1 other water system(s). The system serves approximately 5,806 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Peoria'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. Peoria'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 Peoria's water compare to other cities in Illinois?
Peoria's water quality score of 78/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Illinois state page to see how all cities in the state compare.
What should I do if I'm concerned about Peoria's water quality?
If you have concerns about Peoria'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 (LIMESTONE-WALTERS PWD) 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.