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Round Lake Beach, IL

EPA monitoring detected 14 contaminants across the 1 water supplier serving Round Lake Beach. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
27,200
people served
14
contaminants found
Illinois rankings Lead in Illinois PFAS in Illinois

What was found in Round Lake Beach's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
600 µg/L 46%
of the EPA limit 1300 µg/L
 1/1 SYR4
TTHM
39 µg/L 49%
of the EPA limit 80 µg/L
 1/1 SYR4
Chloroform
23.1 µg/L
No EPA limit set
 1/1 SYR4
Total Haloacetic Acids (HAA5)
11.1 µg/L 19%
of the EPA limit 60 µg/L
 1/1 SYR4
Bromodichloromethane
9.93 µg/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
7.8 µg/L
No EPA limit set
 1/1 SYR4
Dibromochloromethane
6.84 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
6.7 µg/L
No EPA limit set
 1/1 SYR4
Trichloroacetic Acid
4.75 µg/L
No EPA limit set
 1/1 SYR4
Bromoform
3.414 µg/L
No EPA limit set
 1/1 SYR4
Lead
3.4 µg/L 23%
of the EPA limit 15 µg/L
 1/1 SYR4
Monobromoacetic Acid
2.58 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
2.18 µg/L
No EPA limit set
 1/1 SYR4
Lead
0.0046 mg/L 31%
of the EPA limit 0.0150 mg/L
 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 single worst sample on record — 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 Round Lake Beach

SupplierPopulation served
ROUND LAKE BEACH 27,200

Frequently asked questions about Round Lake Beach tap water

Is Round Lake Beach tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Round Lake Beach. 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 Round Lake Beach?

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

What contaminants are in Round Lake Beach's water?

The contaminants EPA monitoring detected in Round Lake Beach include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Bromodichloromethane. The full list, with the highest level found 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.