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Tap water quality report

East St Louis, IL

EPA monitoring detected 24 contaminants across the 2 water suppliers serving East St Louis. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
131,931
people served
24
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in East St Louis's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
5152.5 µg/L 52%
of the EPA limit 10000 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Fluoride
1130 µg/L 28%
of the EPA limit 4000 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Copper
459.3 µg/L 35%
of the EPA limit 1300 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
TTHM
40.645 µg/L 51%
of the EPA limit 80 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Chloroform
34.445 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
28.75 µg/L 48%
of the EPA limit 60 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Dichloroacetic Acid
19.245 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Lithium
13.1 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2024
1/2 UCMR-5
Trichloroacetic Acid
9.445 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Bromodichloromethane
6.49 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Lead
5 µg/L 33%
of the EPA limit 15 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Gross Beta Particle Activity
4.4 pCi/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2014
1/2 SYR4
Monobromoacetic Acid
4.3 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Dibromochloromethane
3.02 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Monochloroacetic Acid
2.95 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Dibromoacetic Acid
2.55 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Arsenic
1.8 µg/L 18%
of the EPA limit 10 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Atrazine
1.23 µg/L 41%
of the EPA limit 3 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Combined Radium (-226 And -228)
0.9000 pCi/L 18%
of the EPA limit 5 pCi/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2014
1/2 SYR4
Xylenes, Total
0.7000 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2019
1/2 SYR4
Pfba
0.0181 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2024
1/2 UCMR-5
Pfhxa
0.0044 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2024
1/2 UCMR-5
Pfpea
0.0042 µg/L
No EPA limit set
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2024
1/2 UCMR-5
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: IL AMERICAN-EAST ST LOUIS · 131,368 people · 2025
1/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving East St Louis

SupplierPopulation served
IL AMERICAN-EAST ST LOUIS 131,368
SOUTHWESTERN IL CORRECTIONAL CENTER 563

Frequently asked questions about East St Louis tap water

Is East St Louis tap water safe to drink?

EPA testing detected 24 contaminants in the water serving East St Louis. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve East St Louis?

2 public water suppliers report drinking-water monitoring for East St Louis, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in East St Louis's water?

The contaminants EPA monitoring detected in East St Louis include Nitrate, Fluoride, Copper, TTHM, Chloroform. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.