Chicago (IL) Water Quality

Chicago is a large public water system in EPA region 05 that provides tap water for the 60601 - 60626, 60629 - 60634, 60637 - 60647, 60651 - 60657, 60660, 60661, 60707 zip codes. It has 3 facilities where the water supply was tested for 23 chemical contaminants that impact tap water quality and human health.

Contaminants

1-butanol

1-butanol is a class of Alcohol that has a minimum reporting level of 2 µg/L and a reference level of 700 µg/L. All the latest water samples for Chicago showed levels of 1-butanol that were below unsafe concentration levels. Learn more about 1-butanol.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<2.0 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<2.0 µg/L
Below Reporting Level

2-methoxyethanol

2-methoxyethanol is a class of Alcohol that has a minimum reporting level of 0.4 µg/L and a reference level of 21 µg/L. All the latest water samples for Chicago showed levels of 2-methoxyethanol that were below unsafe concentration levels. Learn more about 2-methoxyethanol.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.4 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.4 µg/L
Below Reporting Level

2-propen-1-ol (Allyl Alcohol)

2-propen-1-ol (Allyl Alcohol) is a class of Alcohol that has a minimum reporting level of 0.5 µg/L and a reference level of 35 µg/L. All the latest water samples for Chicago showed levels of 2-propen-1-ol (Allyl Alcohol) that were below unsafe concentration levels. Learn more about 2-propen-1-ol (Allyl Alcohol).

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.5 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.5 µg/L
Below Reporting Level

HAA5 (five regulated haloacetic acids)

HAA5 (five regulated haloacetic acids) are a class of Disinfection Byproducts that includes Dibromoacetic Acid, Dichloroacetic Acid, Monobromoacetic Acid, Monochloroacetic Acid, Trichloroacetic Acid and has a minimum reporting level of 0.5 µg/L and a reference level of 60 µg/L. All the latest water samples for Chicago showed levels of HAA5 (five regulated haloacetic acids) that were below unsafe concentration levels. The maximum reported value was 9.586 µg/L. Learn more about HAA5 (five regulated haloacetic acids).

7435 W. Talcott
Distribution System
2/20/2020
60 months ago
9.249 µg/L
Meets Reporting Threshold
4933 S. Western Ave.
Distribution System
2/20/2020
60 months ago
9.543 µg/L
Meets Reporting Threshold
10301 S. Sawyer
Distribution System
2/20/2020
60 months ago
8.09 µg/L
Meets Reporting Threshold
6424 N. Lehigh
Distribution System
2/20/2020
60 months ago
9.586 µg/L
Meets Reporting Threshold
5151 N. Milwaukee
Distribution System
2/20/2020
60 months ago
9.418 µg/L
Meets Reporting Threshold
4101 S. Halsted
Distribution System
2/20/2020
60 months ago
7.649 µg/L
Meets Reporting Threshold
34 E. 114th Street
Distribution System
2/20/2020
60 months ago
8.261 µg/L
Meets Reporting Threshold
1546 N. Central
Distribution System
2/20/2020
60 months ago
8.783 µg/L
Meets Reporting Threshold

HAA6Br (six brominated haloacetic acids)

HAA6Br (six brominated haloacetic acids) are a class of Disinfection Byproducts that includes Bromochloroacetic Acid, Bromodichloroacetic Acid, Dibromoacetic Acid, Dibromochloroacetic Acid, Monobromoacetic Acid, Tribromoacetic Acid and has a minimum reporting level of 0 µg/L and is a potential threat to human health. Learn more about HAA6Br (six brominated haloacetic acids).

7435 W. Talcott
Distribution System
2/20/2020
60 months ago
7.239 µg/L
4933 S. Western Ave.
Distribution System
2/20/2020
60 months ago
7.943 µg/L
10301 S. Sawyer
Distribution System
2/20/2020
60 months ago
6.928 µg/L
6424 N. Lehigh
Distribution System
2/20/2020
60 months ago
7.476 µg/L
5151 N. Milwaukee
Distribution System
2/20/2020
60 months ago
7.308 µg/L
4101 S. Halsted
Distribution System
2/20/2020
60 months ago
7.609 µg/L
34 E. 114th Street
Distribution System
2/20/2020
60 months ago
6.88 µg/L
1546 N. Central
Distribution System
2/20/2020
60 months ago
6.937 µg/L

HAA9 (nine haloacetic acids)

HAA9 (nine haloacetic acids) are a class of Disinfection Byproducts that includes Bromochloroacetic Acid, Bromodichloroacetic Acid, Chlorodibromoacetic Acid, Dibromoacetic Acid, Dichloroacetic Acid, Monobromoacetic Acid, Monochloroacetic Acid, Tribromoacetic Acid, Trichloroacetic Acid and has a minimum reporting level of 0 µg/L and is a potential threat to human health. Learn more about HAA9 (nine haloacetic acids).

7435 W. Talcott
Distribution System
2/20/2020
60 months ago
15.839 µg/L
4933 S. Western Ave.
Distribution System
2/20/2020
60 months ago
16.403 µg/L
10301 S. Sawyer
Distribution System
2/20/2020
60 months ago
14.298 µg/L
6424 N. Lehigh
Distribution System
2/20/2020
60 months ago
16.086 µg/L
5151 N. Milwaukee
Distribution System
2/20/2020
60 months ago
16.078 µg/L
4101 S. Halsted
Distribution System
2/20/2020
60 months ago
14.589 µg/L
34 E. 114th Street
Distribution System
2/20/2020
60 months ago
14.41 µg/L
1546 N. Central
Distribution System
2/20/2020
60 months ago
15.097 µg/L

alpha-hexachlorocyclohexane

alpha-hexachlorocyclohexane is a chemical contaminant that has a reference level of 0.006 µg/L. All the latest water samples for Chicago showed levels of alpha-hexachlorocyclohexane that were below unsafe concentration levels. Learn more about alpha-hexachlorocyclohexane.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.01 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.01 µg/L
Below Reporting Level

anatoxin-a

anatoxin-a is a chemical contaminant that is a potential threat to human health. Learn more about anatoxin-a.

Finished Water
Jardine�Plant
7/28/2020
55 months ago
<0.03 µg/L
Below Reporting Level
Finished Water
South�Plant
7/23/2020
55 months ago
<0.03 µg/L
Below Reporting Level

Butylated Hydroxyanisole

Butylated Hydroxyanisole is a chemical contaminant that is a potential threat to human health. Learn more about Butylated Hydroxyanisole.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.03 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.03 µg/L
Below Reporting Level

chlorpyrifos

chlorpyrifos is a chemical contaminant that has a reference level of 2 µg/L. All the latest water samples for Chicago showed levels of chlorpyrifos that were below unsafe concentration levels. Learn more about chlorpyrifos.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.03 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.03 µg/L
Below Reporting Level

cylindrospermopsin

cylindrospermopsin is a chemical contaminant that has a reference level of 0.7 µg/L. All the latest water samples for Chicago showed levels of cylindrospermopsin that were below unsafe concentration levels. Learn more about cylindrospermopsin.

Finished Water
Jardine�Plant
7/28/2020
55 months ago
<0.09 µg/L
Below Reporting Level
Finished Water
South�Plant
7/23/2020
55 months ago
<0.09 µg/L
Below Reporting Level

dimethipin

dimethipin is a chemical contaminant that has a reference level of 140 µg/L. All the latest water samples for Chicago showed levels of dimethipin that were below unsafe concentration levels. Learn more about dimethipin.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.2 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.2 µg/L
Below Reporting Level

ethoprop

ethoprop is a chemical contaminant that has a reference level of 1.14 µg/L. All the latest water samples for Chicago showed levels of ethoprop that were below unsafe concentration levels. Learn more about ethoprop.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.03 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.03 µg/L
Below Reporting Level

Germanium

Germanium is a chemical contaminant that is a potential threat to human health. Learn more about Germanium.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.3 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.3 µg/L
Below Reporting Level

Manganese

Manganese is a chemical contaminant that has a reference level of 300 µg/L. All the latest water samples for Chicago showed levels of Manganese that were below unsafe concentration levels. Learn more about Manganese.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.4 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.4 µg/L
Below Reporting Level

o-toluidine

o-toluidine is a chemical contaminant that is a potential threat to human health. Learn more about o-toluidine.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.007 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.007 µg/L
Below Reporting Level

oxyfluorfen

oxyfluorfen is a chemical contaminant that has a reference level of 200 µg/L. All the latest water samples for Chicago showed levels of oxyfluorfen that were below unsafe concentration levels. Learn more about oxyfluorfen.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.05 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.05 µg/L
Below Reporting Level

profenofos

profenofos is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for Chicago showed levels of profenofos that were below unsafe concentration levels. Learn more about profenofos.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.3 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.3 µg/L
Below Reporting Level

quinoline

quinoline is a chemical contaminant that has a reference level of 0.01 µg/L. All the latest water samples for Chicago showed levels of quinoline that were below unsafe concentration levels. Learn more about quinoline.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.02 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.02 µg/L
Below Reporting Level

tebuconazole

tebuconazole is a chemical contaminant that has a reference level of 190 µg/L. All the latest water samples for Chicago showed levels of tebuconazole that were below unsafe concentration levels. Learn more about tebuconazole.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.2 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.2 µg/L
Below Reporting Level

Total Microcystin

Total Microcystin is a chemical contaminant that has a reference level of 0.3 µg/L. All the latest water samples for Chicago showed levels of Total Microcystin that were below unsafe concentration levels. Learn more about Total Microcystin.

Finished Water
Jardine�Plant
7/28/2020
55 months ago
<0.3 µg/L
Below Reporting Level
Finished Water
South�Plant
7/23/2020
55 months ago
<0.3 µg/L
Below Reporting Level

Total Permethrin

Total Permethrin is a chemical contaminant that has a reference level of 3.344 µg/L. All the latest water samples for Chicago showed levels of Total Permethrin that were below unsafe concentration levels. Learn more about Total Permethrin.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.04 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.04 µg/L
Below Reporting Level

tribufos

tribufos is a chemical contaminant that has a reference level of 0.6 µg/L. All the latest water samples for Chicago showed levels of tribufos that were below unsafe concentration levels. Learn more about tribufos.

Finished Water
Jardine�Plant
2/3/2020
61 months ago
<0.07 µg/L
Below Reporting Level
Finished Water
South�Plant
2/3/2020
61 months ago
<0.07 µg/L
Below Reporting Level

Sampling Facilities

Facility NameWater Type/Source
Jardine�PlantSurface Water (SW)
South�PlantSurface Water (SW)
Distribution SystemSurface Water (SW)

FAQ

Is Chicago tap water safe to drink?

When was Chicago last tested for water contamination?

The latest water samples were taken between February 3rd, 2020 and July 28th, 2020.