Is Hammond, IN Tap Water Safe? Quality & Contaminants

What was found in Hammond'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
Fluoride	1165 µg/L 29% of the EPA limit 4000 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Copper	454 µg/L 35% of the EPA limit 1300 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2017	1/1	SYR4
Nitrate-Nitrite	444 µg/L 4.4% of the EPA limit 10000 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Nitrate	390 µg/L 3.9% of the EPA limit 10000 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2015	1/1	SYR4
TTHM	23.36 µg/L 29% of the EPA limit 80 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Barium	22 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Bromodichloromethane	7.455 µg/L No EPA limit set Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Chloroform	7.15 µg/L No EPA limit set Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Total Haloacetic Acids (HAA5)	6.6 µg/L 11% of the EPA limit 60 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Lead	6.2 µg/L 41% of the EPA limit 15 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2017	1/1	SYR4
Bromoform	5.3 µg/L No EPA limit set Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Dibromochloromethane	4.775 µg/L No EPA limit set Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Chromium	3.5 µg/L 3.5% of the EPA limit 100 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Gross Alpha, Excl. Radon And U	0.5400 pCi/L 3.6% of the EPA limit 15 pCi/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2018	1/1	SYR4
2,4-D	0.5000 µg/L 0.7% of the EPA limit 70 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Atrazine	0.5000 µg/L 17% of the EPA limit 3 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Mercury	0.2300 µg/L 12% of the EPA limit 2 µg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 people · 2019	1/1	SYR4
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: HAMMOND WATER WORKS DEPARTMENT · 78,384 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 Hammond

Supplier	Population served
HAMMOND WATER WORKS DEPARTMENT	78,384

Frequently asked questions about Hammond tap water

Is Hammond tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Hammond. 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 Hammond?

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

What contaminants are in Hammond's water?

The contaminants EPA monitoring detected in Hammond include Fluoride, Copper, Nitrate-Nitrite, Nitrate, TTHM. 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.