States › Illinois › Kane County

Kane County, IL Water Quality

Water quality data for 19 public water systems serving Kane County, Illinois — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 19 water systems · 21 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Kane County Earns a B

Kane County: 21 communities across 19 water systems. 100.0% have no open violations.

  • Median lead where detected: 2.15 ppb
  • 12 communities with a lead detection, 9 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 11 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2.15 ppb
Median Lead Level
County-wide, 90th percentile
19
Water Systems
Active CWS & NTNCWS
100%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • St. Charles
    3.30 ppb
    No federal limits exceeded on record
    A
  • Batavia
    3.82 ppb
    No federal limits exceeded on record
    A
  • Geneva
    6.29 ppb
    Lead at 6.29 ppb, above a third of the action level
    A
  • Elgin
    Not detected
    1 significant inspection deficiency
    B
  • Carpentersville
    1.10 ppb
    Copper above the 1,300 ppb action level
    A
⚠ Needs Attention
  • South Elgin
    1.40 ppb
    PFAS above the limit at 1 of 8 sampling points
    D
  • Maple Park
    Not detected
    3 significant inspection deficiencies
    C
  • Pingree Grove
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Lily Lake
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Campton Hills
    1.51 ppb
    Copper above the 1,300 ppb action level
    B
County Lead Level — Median 2.15 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2.15 ppb — 14.3% of the federal action level
Systems by Lead Level
Under 5 ppb
10
5 – 10 ppb
2
No Data
9

All Cities in Kane County

Aurora Not detected B
Elgin Not detected B
Carpentersville 1.10 ppb A
St. Charles 3.30 ppb A
Batavia 3.82 ppb A
South Elgin 1.40 ppb D
Geneva 6.29 ppb A
North Aurora 6.20 ppb B
Pingree Grove Not detected C
Sugar Grove Not detected A
Gilberts 2.30 ppb A
West Dundee 2.40 ppb A
Elburn 2.00 ppb B
Hampshire Not detected B
Campton Hills 1.51 ppb B
Prestbury Not detected A
Sleepy Hollow 1.80 ppb B
Maple Park Not detected C
East Dundee 1.10 ppb A
Burlington Not detected B
Lily Lake Not detected C
Showing 21 cities
No active violations Active violations

About Kane County Drinking Water

Kane County is served by 19 water systems covering 21 communities. No community here has an open violation on record.

Of the communities reporting lead results, 12 recorded a detection, with a median of 2.15 ppb — 14% of the federal action level. 9 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 21 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 11 of them.

Frequently Asked Questions

Is Kane County tap water safe to drink?▼
No community in Kane County has an open violation on record. 1 of 21 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Kane County?▼
Among communities with a detection the median is 2.15 ppb, 14% of the 15 ppb action level. 9 reported none detected and 0 reported no result.
How many water systems serve Kane County?▼
19 community water systems serve 21 communities here.
← Back to Illinois water quality overview