When: February 8, 2024 – March 7, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 29, 2022 – March 31, 2023Rule: Ground Water RuleEnforcement: 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
Frequently Asked Questions About Richton Park Water
Is Richton Park tap water safe to drink?
Richton Park, Illinois tap water receives a grade of F (15/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 66 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Richton Park's water?
Of the 66 contaminants tested in Richton Park's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Richton Park have any water quality violations?
Yes, Richton Park has 66 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, TT. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Richton Park?
Richton Park 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. 1 contaminant(s) exceed these stricter goals.
Where does Richton Park's tap water come from?
Richton Park's drinking water is sourced from groundwater and supplied by RICHTON PARK. The system serves approximately 12,504 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Richton Park'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. Richton Park'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 Richton Park's water compare to other cities in Illinois?
Richton Park's water quality score of 15/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Illinois state page to see how all cities in the state compare.
What should I do if I'm concerned about Richton Park's water quality?
If you have concerns about Richton Park'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 (RICHTON PARK) 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.