C46/100
Sugar Grove Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 11,243 residents · Illinois
What's In Sugar Grove's Tap Water?
52
Contaminants Tested
1
Exceed EPA Limits
0
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.70 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
0
Health-Related
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: April 1, 2022 – June 30, 2022Enforcement: Resolving — corrective action underway
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, 2024Enforcement: Resolving — corrective action underway
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, 2024Enforcement: 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
SUGAR GROVE
Population Served
11,243
Water Source
Groundwater
System ID
IL0890850
Frequently Asked Questions About Sugar Grove Water
Is Sugar Grove tap water safe to drink?
Sugar Grove, Illinois tap water receives a grade of C (46/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 18 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Sugar Grove's water?
Of the 52 contaminants tested in Sugar Grove's water supply, the most notable include Copper (90th percentile). 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Sugar Grove have any water quality violations?
Yes, Sugar Grove has 18 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, Other, MCL. 7 of these are health-based violations, which are the most serious category.
Do I need a water filter in Sugar Grove?
Based on EPA data, using a water filter in Sugar Grove 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 Sugar Grove's tap water come from?
Sugar Grove's drinking water is sourced from groundwater and supplied by SUGAR GROVE. The system serves approximately 11,243 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Sugar Grove'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. Sugar Grove'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 Sugar Grove's water compare to other cities in Illinois?
Sugar Grove's water quality score of 46/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Illinois state page to see how all cities in the state compare.
What should I do if I'm concerned about Sugar Grove's water quality?
If you have concerns about Sugar Grove'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 (SUGAR GROVE) 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.