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Tap water quality report

Steward, IL

EPA monitoring detected 12 contaminants across the 1 water supplier serving Steward. 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.

1
water supplier
238
people served
12
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Steward'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
Fluoride
1052.25 µg/L 26%
of the EPA limit 4000 µg/L
Main supplier: STEWARD · 238 people · 2019
1/1 SYR4
Nitrate
210 µg/L 2.1%
of the EPA limit 10000 µg/L
Main supplier: STEWARD · 238 people · 2019
1/1 SYR4
Copper
192 µg/L 15%
of the EPA limit 1300 µg/L
Main supplier: STEWARD · 238 people · 2019
1/1 SYR4
Barium
107.5 µg/L 5.4%
of the EPA limit 2000 µg/L
Main supplier: STEWARD · 238 people · 2019
1/1 SYR4
Lead
12.04 µg/L 80%
of the EPA limit 15 µg/L
Main supplier: STEWARD · 238 people · 2019
1/1 SYR4
Arsenic
12 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: STEWARD · 238 people · 2019
1/1 SYR4
TTHM
3.43053 µg/L 4.3%
of the EPA limit 80 µg/L
Main supplier: STEWARD · 238 people · 2017
1/1 SYR4
Chloroform
1.89153 µg/L
No EPA limit set
Main supplier: STEWARD · 238 people · 2017
1/1 SYR4
Bromodichloromethane
1.04 µg/L
No EPA limit set
Main supplier: STEWARD · 238 people · 2017
1/1 SYR4
Combined Radium (-226 And -228)
0.9518 pCi/L 19%
of the EPA limit 5 pCi/L
Main supplier: STEWARD · 238 people · 2016
1/1 SYR4
Dibromochloromethane
0.5750 µg/L
No EPA limit set
Main supplier: STEWARD · 238 people · 2017
1/1 SYR4
Lead
0.0100 mg/L 67%
of the EPA limit 0.0150 mg/L
Main supplier: STEWARD · 238 people · 2025
1/1 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 Steward

SupplierPopulation served
STEWARD 238

Frequently asked questions about Steward tap water

Is Steward tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Steward. 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 Steward?

1 public water supplier report drinking-water monitoring for Steward, Illinois to the EPA. Each is listed above with its population served.

What contaminants are in Steward's water?

The contaminants EPA monitoring detected in Steward include Fluoride, Nitrate, Copper, Barium, Lead. 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.