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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality data for 4 cities serving 353,475 residents
Kane County in Illinois has an average water quality score of 79/100 (Grade B) based on analysis of 4 municipal water systems. The county's water systems serve approximately 353,475 residents.
Water quality in Kane County is fair, with some cities showing room for improvement. 1 cities have scores below 70, indicating elevated contaminant levels that residents should be aware of. St. Charles has the best water quality at 92/100.
4 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | St. Charles Top concern: Lead (20% of limit) | 92 | A | 31,599 |
| 2 | Carpentersville Top concern: Fluoride (17.4% of limit) | 90 | A | 35,095 |
| 3 | Elgin Top concern: Lead (39.5% of limit) | 80 | B+ | 109,901 |
| 4 | Aurora Top concern: Lead (59.8% of limit) | 55 | C- | 176,880 |
Top detected contaminants across county water systems
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Lead | 0.005 mg/L | 0.009 mg/L | 0.015 mg/L | 30.3% | 4 |
| Total Trihalomethanes | 23.59 ug/L | 31.272 ug/L | 80 ug/L | 29.5% | 3 |
| Haloacetic Acids | 15.087 ug/L | 34.431 ug/L | 60 ug/L | 25.1% | 4 |
| Fluoride | 0.849 mg/L | 0.96 mg/L | 4 mg/L | 21.2% | 4 |
| Copper | 0.27 mg/L | 0.578 mg/L | 1.3 mg/L | 20.8% | 3 |
| Nitrite | 0.175 mg/L | 0.449 mg/L | 1 mg/L | 17.5% | 4 |
| Mercury | 0 mg/L | 0.001 mg/L | 0.002 mg/L | 16.7% | 3 |
| Nitrate | 1.562 mg/L | 3.243 mg/L | 10 mg/L | 15.6% | 4 |
Recent violations across county water systems
Water quality in Kane County, Illinois reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 4 municipal water systems serving a combined population of over 353,475 residents.
The county shows moderate water quality performance, with scores ranging from 55/100 in Aurora to 92/100 in St. Charles. This 37-point spread indicates significant variation in water quality across the county, suggesting different water sources or treatment approaches.
The most prevalent contaminants detected across Kane County water systems include Lead, Total Trihalomethanes, Haloacetic Acids. All monitored contaminants remain within acceptable levels relative to EPA Maximum Contaminant Levels (MCLs).
Water quality in Kane County is fair but shows room for improvement. Residents in cities scoring below 70 should consider water filtration, particularly for drinking and cooking. Check your specific city's report above for personalized recommendations.
Kane County has an average water quality score of 79/100 (Grade B) based on analysis of 4 municipal water systems serving 353,475 residents.
St. Charles has the highest water quality score in Kane County at 92/100. View the detailed report for St. Charles.
Given the water quality variation across Kane County, we recommend reviewing your specific city's water quality report. 1 cities have scores below 70, where filtration is particularly recommended.
Click on any city in the rankings table above to view its detailed water quality report, including contaminant levels, EPA compliance history, and filter recommendations.