When: May 28, 2023 – August 12, 2024Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved
Failed to issue initial public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – December 27, 2024Rule: Ground Water RuleEnforcement: Formal — state order issued
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2022 – December 31, 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
Silvis, Illinois tap water receives a grade of F (11/100), which is considered failing. 1 contaminant(s) exceed EPA maximum contaminant levels and 111 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Silvis's water?
Of the 32 contaminants tested in Silvis's water supply, the most notable include Copper (90th percentile), 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 Silvis have any water quality violations?
Yes, Silvis has 111 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, MR. 14 of these are health-based violations, which are the most serious category.
Do I need a water filter in Silvis?
Based on EPA data, using a water filter in Silvis 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 Silvis's tap water come from?
Silvis's drinking water is sourced from purchased surface water and supplied by SILVIS and 1 other water system(s). The system serves approximately 8,923 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Silvis'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. Silvis'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 Silvis's water compare to other cities in Illinois?
Silvis's water quality score of 11/100 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 Silvis's water quality?
If you have concerns about Silvis'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 (SILVIS) 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.