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Lombard, IL

EPA monitoring detected 13 contaminants across the 2 water suppliers serving Lombard. 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
45,155
people served
13
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Lombard'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
Copper
458.6 µg/L 35%
of the EPA limit 1300 µg/L
Main supplier: LOMBARD · 44,476 people · 2017
2/2 SYR4
Lead
101.71 µg/L 678%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: LOMBARD · 44,476 people · 2017
2/2 SYR4
TTHM
62.15 µg/L 78%
of the EPA limit 80 µg/L
Main supplier: LOMBARD · 44,476 people · 2019
2/2 SYR4
Chloroform
38.4 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
20.55 µg/L 34%
of the EPA limit 60 µg/L
Main supplier: LOMBARD · 44,476 people · 2019
Highest in the city: 21.595 µg/L — IL AMERICAN-LOMBARD HEIGHTS · 679 people · 2019
2/2 SYR4
Bromodichloromethane
16.05 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
2/2 SYR4
Trichloroacetic Acid
11.4 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
2/2 SYR4
Dichloroacetic Acid
10.015 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
Highest in the city: 11.325 µg/L — IL AMERICAN-LOMBARD HEIGHTS · 679 people · 2019
2/2 SYR4
Dibromochloromethane
7.67 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
2/2 SYR4
Monochloroacetic Acid
5.02 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
1/2 SYR4
Monobromoacetic Acid
1.66 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
Highest in the city: 2.28 µg/L — IL AMERICAN-LOMBARD HEIGHTS · 679 people · 2019
2/2 SYR4
Dibromoacetic Acid
1.253 µg/L
No EPA limit set
Main supplier: LOMBARD · 44,476 people · 2019
Highest in the city: 2 µg/L — IL AMERICAN-LOMBARD HEIGHTS · 679 people · 2019
2/2 SYR4
Lead
0.0112 mg/L 75%
of the EPA limit 0.0150 mg/L
Main supplier: LOMBARD · 44,476 people · 2026
2/2 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 Lombard

SupplierPopulation served
LOMBARD 44,476
IL AMERICAN-LOMBARD HEIGHTS 679

Frequently asked questions about Lombard tap water

Is Lombard tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Lombard. 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 Lombard?

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

What contaminants are in Lombard's water?

The contaminants EPA monitoring detected in Lombard include Copper, Lead, TTHM, Chloroform, Total Haloacetic Acids (HAA5). 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.