Kane County Water Quality: 7 Cities Ranked by the Records
Kane County, Illinois: 7 city reports built from EPA and utility records. A county has many suppliers; each city shows the system that serves it.
Highest result for each contaminant
One row per contaminant: the highest result any system in the county reported, against its limit. Open a row for the systems behind it.
LithiumDetected in 6 systems of 7 tested10 µg/L EPA health reference level (screening, not a legal limit) · US EPAHighest34.6 µg/L
- NORTH AURORA34.6 µg/LSample date: 2024-08-07 to 2025-02-05
- BATAVIA34.5 µg/LSample date: 2024-08-13 to 2025-02-25
- ELGIN19.3 µg/LSample date: 2024-04-18 to 2025-05-15
- SOUTH ELGIN19.1 µg/LSample date: 2023-08-23 to 2025-03-05
- SUGAR GROVE18.4 µg/LSample date: 2024-09-23 to 2025-03-19
- CARPENTERSVILLE10.7 µg/LSample date: 2025-01-07 to 2025-07-14
- GENEVANot detected · below 9.0 µg/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
Perfluorooctanoic acid (PFOA)Detected in 1 system of 7 tested4.0 ng/L federal MCL (2024) · US EPAHighest5.7 ng/L
- SOUTH ELGIN5.7 ng/LSample date: 2023-08-23 to 2025-03-05
- BATAVIANot detected · below 4.0 ng/L lab reporting limitSample date: 2024-08-13 to 2025-02-25
- CARPENTERSVILLENot detected · below 4.0 ng/L lab reporting limitSample date: 2025-01-07 to 2025-07-14
- ELGINNot detected · below 4.0 ng/L lab reporting limitSample date: 2024-04-18 to 2025-05-15
- GENEVANot detected · below 4.0 ng/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
- NORTH AURORANot detected · below 4.0 ng/L lab reporting limitSample date: 2024-08-07 to 2025-02-05
- SUGAR GROVENot detected · below 4.0 ng/L lab reporting limitSample date: 2024-09-23 to 2025-03-19
Copper (90th percentile)Detected in 3 systems1.3 mg/L federal action level · US EPAHighest1.7 mg/L
- SUGAR GROVE1.7 mg/LMonitoring period: 2015–2017
- SOUTH ELGIN1.5 mg/LMonitoring period: 2024–2024
- CARPENTERSVILLE1.4 mg/LMonitoring period: 2022–2024
Lead (90th percentile)Detected in 6 systems of 7 tested15 µg/L federal action level · US EPAHighest18.5 µg/L
- ELGIN18.5 µg/LMonitoring period: 2026–2026 (still open)
- NORTH AURORA6.2 µg/LMonitoring period: 2026–2026 (still open)
- GENEVA5.35 µg/LMonitoring period: 2026–2026 (still open)
- BATAVIA3.82 µg/LMonitoring period: 2025–2025
- SOUTH ELGIN1.4 µg/LMonitoring period: 2026–2026 (still open)
- CARPENTERSVILLE1.1 µg/LMonitoring period: 2026–2028 (still open)
- SUGAR GROVENot detectedMonitoring period: 2026–2028 (still open)
Perfluorohexanesulfonic acid (PFHxS)Detected in 1 system of 7 tested10 ng/L federal MCL (2024) · US EPAHighest8 ng/L
- SUGAR GROVE8 ng/LSample date: 2024-09-23 to 2025-03-19
- BATAVIANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-13 to 2025-02-25
- CARPENTERSVILLENot detected · below 3.0 ng/L lab reporting limitSample date: 2025-01-07 to 2025-07-14
- ELGINNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-04-18 to 2025-05-15
- GENEVANot detected · below 3.0 ng/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
- NORTH AURORANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-07 to 2025-02-05
- SOUTH ELGINNot detected · below 3.0 ng/L lab reporting limitSample date: 2023-08-23 to 2025-03-05
Perfluorobutanesulfonic acid (PFBS)Detected in 1 system of 7 tested2,000 ng/L EPA health advisory (screening, not a legal limit) · US EPAHighest9.7 ng/L
- SOUTH ELGIN9.7 ng/LSample date: 2023-08-23 to 2025-03-05
- BATAVIANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-13 to 2025-02-25
- CARPENTERSVILLENot detected · below 3.0 ng/L lab reporting limitSample date: 2025-01-07 to 2025-07-14
- ELGINNot detected · below 3.0 ng/L lab reporting limitSample date: 2024-04-18 to 2025-05-15
- GENEVANot detected · below 3.0 ng/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
- NORTH AURORANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-07 to 2025-02-05
- SUGAR GROVENot detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-23 to 2025-03-19
Perfluorohexanoic acid (PFHxA)Detected in 2 systems of 7 tested400,000 ng/L Michigan EGLE state MCL (strictest US state) · Michigan EGLEHighest5.1 ng/L
- SOUTH ELGIN5.1 ng/LSample date: 2023-08-23 to 2025-03-05
- ELGIN4 ng/LSample date: 2024-04-18 to 2025-05-15
- BATAVIANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-13 to 2025-02-25
- CARPENTERSVILLENot detected · below 3.0 ng/L lab reporting limitSample date: 2025-01-07 to 2025-07-14
- GENEVANot detected · below 3.0 ng/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
- NORTH AURORANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-07 to 2025-02-05
- SUGAR GROVENot detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-23 to 2025-03-19
Perfluorobutanoic acid (PFBA)Detected in 2 systems of 7 testedNo federal or state limit; shown for transparencyHighest8 ng/L
- SOUTH ELGIN8 ng/LSample date: 2023-08-23 to 2025-03-05
- ELGIN7.6 ng/LSample date: 2024-04-18 to 2025-05-15
- BATAVIANot detected · below 5.0 ng/L lab reporting limitSample date: 2024-08-13 to 2025-02-25
- CARPENTERSVILLENot detected · below 5.0 ng/L lab reporting limitSample date: 2025-01-07 to 2025-07-14
- GENEVANot detected · below 5.0 ng/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
- NORTH AURORANot detected · below 5.0 ng/L lab reporting limitSample date: 2024-08-07 to 2025-02-05
- SUGAR GROVENot detected · below 5.0 ng/L lab reporting limitSample date: 2024-09-23 to 2025-03-19
1 more contaminant detectedShow
Perfluoropentanoic acid (PFPeA)Detected in 2 systems of 7 testedNo federal or state limit; shown for transparencyHighest7.6 ng/L
- SOUTH ELGIN7.6 ng/LSample date: 2023-08-23 to 2025-03-05
- ELGIN4.7 ng/LSample date: 2024-04-18 to 2025-05-15
- BATAVIANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-13 to 2025-02-25
- CARPENTERSVILLENot detected · below 3.0 ng/L lab reporting limitSample date: 2025-01-07 to 2025-07-14
- GENEVANot detected · below 3.0 ng/L lab reporting limitSample date: 2023-05-08 to 2023-11-06
- NORTH AURORANot detected · below 3.0 ng/L lab reporting limitSample date: 2024-08-07 to 2025-02-05
- SUGAR GROVENot detected · below 3.0 ng/L lab reporting limitSample date: 2024-09-23 to 2025-03-19
23 PFAS tested, none detected in any systemShow
Tested in these 7 systems: BATAVIA, CARPENTERSVILLE, ELGIN, GENEVA, NORTH AURORA, SOUTH ELGIN, SUGAR GROVE
- 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
- 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- 4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Perfluoro-3-methoxypropanoic acid (PFMPA)
- Perfluoro-4-methoxybutanoic acid (PFMBA)
- Perfluorodecanoic acid (PFDA)
- Perfluorododecanoic acid (PFDoA)
- Perfluoroheptanesulfonic acid (PFHpS)
- Perfluoroheptanoic acid (PFHpA)
- Perfluorononanoic acid (PFNA)
- Perfluorooctanesulfonic acid (PFOS)
- Perfluoropentanesulfonic acid (PFPeS)
- Perfluorotetradecanoic acid (PFTA)
- Perfluorotridecanoic acid (PFTrDA)
- Perfluoroundecanoic acid (PFUnA)
Cities ranked by the records
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Ranked by the Purity Score of each city's main water system, highest first. Scores belong to water systems; there is no county score. The score is computed only from contaminants measured in the published EPA record, so this ranks the record, not which city's water is safest. How the score works.
1of 7 cities above the 15 µg/L action level
Based on each system's 90th-percentile result. Lead from household plumbing isn't in this record.
Lead in IllinoisLargest water systems
- ElginELGIN · IL0894380114,797 served
- CarpentersvilleCARPENTERSVILLE · IL089020037,983 served
- BataviaBATAVIA · IL089413026,098 served
- South ElginSOUTH ELGIN · IL089080023,648 served
- GenevaGENEVA · IL089035021,247 served
- North AuroraNORTH AURORA · IL089060018,261 served
- Sugar GroveSUGAR GROVE · IL089085011,243 served
Frequently asked
How does Kane County tap water compare across cities?
PurityMap ranks 7 cities in Kane County by the Purity Score of each city's main water system, computed only from contaminants measured in the published EPA record. Scores belong to water systems, not to cities. The highest published score is Batavia's main water system: BATAVIA · PWSID IL0894130 · Purity Score 96 (Excellent) · Confidence: moderate · Assessed at the water-system level. The ranking compares the records, not which city's water is safest, and your own tap can differ with household plumbing.
How many Kane County cities had a PFAS sample above a 2024 EPA limit?
1 of 7 Kane County city reports had a PFAS sample above a 2024 EPA limit in EPA's UCMR 5 testing, including South Elgin (PFOA 5.7 ng/L). That limit is judged on a yearly average, and water systems have until 2029 to meet it, so a single sample is not a violation. PFAS were detected at any level in 3.
Is there lead in Kane County tap water?
Utilities report lead as a 90th-percentile result from home taps. 6 of 7 Kane County cities reported a value above zero, and 1 city was above the 15 µg/L federal action level. Lead usually comes from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.
Have Kane County water systems had drinking-water violations?
1 city in Kane County has a health-based violation in the federal SDWIS record within about the last ten years. Each city report lists the contaminant, year and whether it was resolved.
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