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Tap water quality report

Griffith, IN

EPA monitoring detected 10 contaminants across the 2 water suppliers serving Griffith. 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
16,972
people served
10
contaminants found
Indiana rankings Lead in Indiana PFAS in Indiana

What was found in Griffith'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
Fluoride
484.5 µg/L 12%
of the EPA limit 4000 µg/L
Highest in the city: BREMERTON MOBILE HOME PARK · 79 people · 2017
1/2 SYR4
Nitrate
400 µg/L 4%
of the EPA limit 10000 µg/L
Highest in the city: BREMERTON MOBILE HOME PARK · 79 people · 2017
1/2 SYR4
Copper
328 µg/L 25%
of the EPA limit 1300 µg/L
Main supplier: GRIFFITH WATER DEPARTMENT · 16,893 people · 2017
2/2 SYR4
Barium
130.9 µg/L 6.5%
of the EPA limit 2000 µg/L
Highest in the city: BREMERTON MOBILE HOME PARK · 79 people · 2017
1/2 SYR4
TTHM
24.2 µg/L 30%
of the EPA limit 80 µg/L
Main supplier: GRIFFITH WATER DEPARTMENT · 16,893 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
6.495 µg/L 11%
of the EPA limit 60 µg/L
Main supplier: GRIFFITH WATER DEPARTMENT · 16,893 people · 2019
1/2 SYR4
Lead
6.44 µg/L 43%
of the EPA limit 15 µg/L
Main supplier: GRIFFITH WATER DEPARTMENT · 16,893 people · 2017
1/2 SYR4
Combined Radium (-226 And -228)
1.35 pCi/L 27%
of the EPA limit 5 pCi/L
Highest in the city: BREMERTON MOBILE HOME PARK · 79 people · 2018
1/2 SYR4
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
Highest in the city: BREMERTON MOBILE HOME PARK · 79 people · 2017
1/2 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: GRIFFITH WATER DEPARTMENT · 16,893 people · 2023
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 Griffith

SupplierPopulation served
GRIFFITH WATER DEPARTMENT 16,893
BREMERTON MOBILE HOME PARK 79

Frequently asked questions about Griffith tap water

Is Griffith tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Griffith. 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 Griffith?

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

What contaminants are in Griffith's water?

The contaminants EPA monitoring detected in Griffith include Fluoride, Nitrate, Copper, Barium, 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.