What contaminants are in HAMMOND tap water?

Public data sources identify the following contaminants in HAMMOND's water supply: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Bromodichloromethane, Haloacetic acids (HAA5), Dibromochloromethane, Chloroform, Chromium (hexavalent), Nitrate and nitrite, 1,4-Dioxane, Bromoform, Manganese, Barium, Molybdenum, Vanadium, Strontium, Chromium (total), Fluoride, Testosterone. Levels and comparison to EWG health guidelines are listed on the full city page.

Which water utility serves HAMMOND?

HAMMOND is served by HAMMOND WATER WORKS DEPARTMENT. HAMMOND WATER WORKS DEPARTMENT serves approximately 78,384 residents.

Tap Water Quality Report

Tap water quality in HAMMOND, Indiana

Q: Is the tap water in HAMMOND, Indiana safe to drink?

HAMMOND's tap water receives a grade of B (82/100) from TapWaterSafety.org. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline, Total trihalomethanes (TTHMs) significantly above health guideline, Bromodichloromethane significantly above health guideline. Grades are based on EPA SDWIS, EPA ECHO, EWG Tap Water Database, and the utility's published Consumer Confidence Report.

Served by HAMMOND WATER WORKS DEPARTMENT. 78,384 residents.

Average score 82/100

Utilities 1

Population 78,384

82/100

Good

ⓘ How did we get this rating?

Quick answer

Tap water in HAMMOND, Indiana receives a grade of B (82/100) from TapWaterSafety.org. It's served by HAMMOND WATER WORKS DEPARTMENT. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Bromodichloromethane significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.

Data sources for this grade: utilities.csv EWG Tap Water Database ⓘ How did we get this rating?

What's in HAMMOND's tap water

Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving HAMMOND.

Haloacetic acids (HAA9) significantly above health guideline

Moderate concern

Haloacetic acids (HAA9) detected at 15.8 ppb, 263x above the EWG health guideline of 0.06 ppb.

Total trihalomethanes (TTHMs) significantly above health guideline

Moderate concern

Total trihalomethanes (TTHMs) detected at 16.2 ppb, 108x above the EWG health guideline of 0.15 ppb.

Bromodichloromethane significantly above health guideline

Moderate concern

Bromodichloromethane detected at 6.21 ppb, 103x above the EWG health guideline of 0.06 ppb.

EPA compliance record

Official U.S. EPA records for HAMMOND WATER WORKS DEPARTMENT (system ID IN5245020) for the last 3 years. Checked 2026-10-07.

No health-based violations. EPA recorded one quarter with a testing, reporting or notice violation.

1 of 12quarters with a violation

Nolead above EPA action level

10/16/2024last state inspection

Rule	Type	Since	Status
Synthetic Organic Chemicals	Missed testing or reporting	10/01/2024	Open

Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.

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Filters matched to the specific contaminants in HAMMOND's water supply.

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All contaminants detected in HAMMOND's tap water

Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →

Contaminant	Detected	EWG US health-based	EPA US legal	EU DWD Europe	WHO global	CA PHG strictest US	Tested sample year	Status
Haloacetic acids (HAA9) Disinfection byproduct	15.8 ppb	0.06	—	—	—	—	—	263× over
Total trihalomethanes (TTHMs) Disinfection byproduct	16.2 ppb	0.15	80.0	100	—	—	—	108× over
Bromodichloromethane Disinfection byproduct	6.21 ppb	0.06	—	—	—	—	—	103× over
Haloacetic acids (HAA5) Disinfection byproduct	4.02 ppb	0.1	60.0	60	—	—	—	40× over
Dibromochloromethane Disinfection byproduct	3.55 ppb	0.1	—	—	—	—	—	36× over
Chloroform Disinfection byproduct	6.66 ppb	0.4	—	—	—	—	—	17× over
Chromium (hexavalent) Heavy metal	0.161 ppb	0.02	—	—	—	—	—	8.1× over
Nitrate and nitrite Inorganic	0.371 ppm	0.14	10.0	11.3	11.3	10	—	2.6× over
1,4-Dioxane Semi-volatile organic compound	0.065 ppb	0.35	—	—	50	1	—	Below guideline
Bromoform Disinfection byproduct	0.0647 ppb	0.5	—	—	—	—	—	Below guideline
Manganese Heavy metal	5.01 ppb	100.0	—	50	80	—	—	Below guideline
Barium Heavy metal	20.7 ppb	700.0	2000.0	—	1300	2000	—	Below guideline
Molybdenum Other	1.09 ppb	40.0	—	—	—	—	—	Below guideline
Vanadium Other	0.263 ppb	21.0	—	—	—	—	—	Below guideline
Strontium Radiological	0.115 ppb	1500.0	—	—	—	—	—	Below guideline
Chromium (total) Heavy metal	0.267 ppb	—	100.0	—	—	—	—	Below guideline
Fluoride Inorganic	0.692 ppm	—	4.0	1.5	1.5	—	—	Below guideline
Testosterone Other	0.025 ppt	—	—	—	—	—	—	Below guideline

All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.

Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.