Water Quality Reports > Chicago IL Drinking Water Quality Report
Water Quality Score
F
Chicago IL Drinking Water Quality
Water Quality Factors
  • Failed some Health Guidelines
  • Failed some Legal Limits
  • Failed some Reporting and Monitoring Requirements
  • Uses Chlorine disinfectant

Chicago receives its water from Lake Michigan. The worlds largest wastewater treatment plant is located in Stickney, a suburb of Chicago and independent water quality assessments have rated the area's drinking water as excellent. Most of the time, the water that comes out of Chicago's taps meet or exceeds that of bottled water. Most officials and environmental experts have said that Chicago's drinking water is safe and tasty, but there are reasons individuals should filter their water to remove various substances and odors. In recent years, radioactive elements and lead have exceeded health guidelines.

Chicago, IL Drinking Water Top Suppliers

Water SupplierWater Supply SourcePopulation ServedService Connections
Chicago Heights
137 East 14th Street Chicago Heights, IL 60411
Purchased Surface Water 30,996 8,951
Chicago Ridge
10455 Ridgeland Chicago Ridge, IL 60415
Purchased Surface Water 14,127 2,863
Chicago
1000 E Ohio St Chicago, IL 60611
Surface Water 2,896,016 506,114
West Chicago
475 Main St West Chicago, IL 60185
Ground Water 26,841 6,780
Data Sources:
EPA 2012 SDWIS Report

Chicago, IL Water Quality Recent Violations

There were no health violations for in the 2010-2012 reporting periods

There was 1 other violation found in Chicago, IL by the EPA in the 2010-2012 reporting periods. They are listed in the table below.

Drinking Water Rule or ContaminantDate Violation Last Reported Violation TypeViolationNumber of ViolationsAvg ViolationMax ViolationState Standard Unit of MeasureEnforcement Action
Total Coliform Rule 2011-03-08 Monitoring or reporting violation Monitoring, Routine Minor (TCR) 1 0 Compliance Achieved
To see the latest EPA monitoring report for visit the EPA at SDWIS Report
To see the latest EPA monitoring report for visit the EPA at SDWIS Report
To see the latest EPA monitoring report for visit the EPA at SDWIS Report
To see the latest EPA monitoring report for visit the EPA at SDWIS Report

Chicago, IL Water Quality Historical Violations

Detected
36
Above Health Limits
5
Below Limits
26
ContaminantTotal Tests Positive ResultsAbove Health LimitsAbove Legal LimitsEPA RegulatedMax ResultHealth Limit Legal Limit
Combined Radium (-226 & -228) 19 18 18 12 Yes 20.70 - 5
Radium-226 20 19 19 6 Yes 12.10 0.05 5
Alpha particle activity 17 17 17 6 Yes 41.10 - 15
Alpha particle activity (excl radon and uranium) 16 16 6 6 Yes 39 15 15
Lead (total) 33 9 9 1 Yes 147.15 0.20 15
Lead (total) 62 26 26 0 Yes 8.70 0.20 15
Radium-228 21 20 20 0 Yes 12.60 0.02 5
Alpha particle activity 1 1 1 0 Yes 0.88 - 15
Combined Radium (-226 & -228) 1 1 1 0 Yes 1.38 - 5
Radium-226 1 1 1 0 Yes 0.44 0.05 5
Arsenic (total) 6 1 0 0 Yes 1 2 10
Barium (total) 10 9 0 0 Yes 22 2000 2000
Bromodichloromethane 79 77 0 0 Yes 8.40 100 80
Bromoform 58 12 0 0 Yes 6.20 800 80
Chloroform 79 77 0 0 Yes 20.90 70 80
Chromium (total) 6 1 0 0 Yes 5.60 100 100
cis-1,2-Dichloroethylene 16 1 0 0 Yes 0.86 70 70
Combined Uranium (pCi/L) 19 14 0 0 Yes 10.30 15 15
Copper 90 26 0 0 Yes 600 1300 1300
Dibromoacetic acid 57 27 0 0 Yes 2.80 - 60
Dibromochloromethane 79 77 0 0 Yes 5.40 60 80
Dichloroacetic acid 78 58 0 0 Yes 7.40 70 60
Manganese 4 1 0 0 No 15.20 300 -
Molybdenum 8 2 0 0 No 31 40 -
Monobromoacetic acid 21 17 0 0 Yes 5 - 60
Monochloroacetic acid 42 2 0 0 Yes 4 70 60
Nitrate 14 7 0 0 Yes 0.42 10 10
Nitrate & nitrite 17 8 0 0 Yes 2.69 10 10
Phosphorus 3 2 0 0 No 44 - -
Strontium 3 3 0 0 No 2224 4000 -
Styrene 16 2 0 0 Yes 0.93 100 100
Total haloacetic acids (HAAs) 78 63 0 0 Yes 38 70 60
Total trihalomethanes (TTHMs) 79 77 0 0 Yes 42.80 - 80
Trichloroacetic acid 78 58 0 0 Yes 9.68 20 60
Xylenes (total) 16 1 0 0 Yes 1 10000 10000

2 Water Contaminants were tested for in the Chicago, IL area but not found in drinking water between 2004 and 2009.

Data Source: NYTimes.com

The scores and results above reflect a summary of the historical drinking water testing results that has been documented by the EPA and other sources. The color coding of the symbols was developed by WaterFilterComparisions.com as an easy way for individuals to gauge the historical effectiveness of Chicago water suppliers in meeting legal and health regulations in providing clean drinking water. This should only be used as a guide, and WaterFilterComparisons recommends you contact Chicago water suppliers to better understand the quality of the drinking water in Chicago, .