Is Pittsburg, IL Tap Water Safe? Quality & Contaminants

What was found in Pittsburg'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	335.75 µg/L 26% of the EPA limit 1300 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019	1/2	SYR4
TTHM	49.12 µg/L 61% of the EPA limit 80 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019 Highest in the city: 54.02 µg/L — PITTSBURG · 2,948 people · 2019	2/2	SYR4
Chloroform	41.87 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019	2/2	SYR4
Total Haloacetic Acids (HAA5)	24.975 µg/L 42% of the EPA limit 60 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019 Highest in the city: 27.87 µg/L — PITTSBURG · 2,948 people · 2019	2/2	SYR4
Dichloroacetic Acid	20.16 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019 Highest in the city: 21.95 µg/L — PITTSBURG · 2,948 people · 2019	2/2	SYR4
Bromodichloromethane	10.5 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019	2/2	SYR4
Lead	8.016 µg/L 53% of the EPA limit 15 µg/L Main supplier: CORINTH PWD · 3,927 people · 2019	1/2	SYR4
Dibromochloromethane	3.785 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019 Highest in the city: 4.525 µg/L — PITTSBURG · 2,948 people · 2019	2/2	SYR4
Trichloroacetic Acid	4.2 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019	2/2	SYR4
Monochloroacetic Acid	2.94 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019	2/2	SYR4
Dibromoacetic Acid	1.58 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2019 Highest in the city: 1.92 µg/L — PITTSBURG · 2,948 people · 2019	2/2	SYR4
Bromoform	1 µg/L No EPA limit set Highest in the city: PITTSBURG · 2,948 people · 2019	1/2	SYR4
Pfba	0.0056 µg/L No EPA limit set Main supplier: CORINTH PWD · 3,927 people · 2023	1/2	UCMR-5
Lead	0.0046 mg/L 30% of the EPA limit 0.0150 mg/L Main supplier: CORINTH PWD · 3,927 people · 2025	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 Pittsburg

Supplier	Population served
CORINTH PWD	3,927
PITTSBURG	2,948

Frequently asked questions about Pittsburg tap water

Is Pittsburg tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Pittsburg. 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 Pittsburg?

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

What contaminants are in Pittsburg's water?

The contaminants EPA monitoring detected in Pittsburg include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Dichloroacetic Acid. 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.