What was found in Gary'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 | 2400 µg/L 185% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Fluoride | 932.2 µg/L 23% of the EPA limit 4000 µg/L Main supplier: GARY WSC · 1,050 people · 2018
Highest in the city: 1097.2 µg/L — SOUTH MURVAUL WSC · 981 people · 2018 | 3/4 | SYR4 |
| TTHM | 236.78 µg/L 296% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Nitrate | 90.545 µg/L 0.9% of the EPA limit 10000 µg/L Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 163 µg/L — MURVAUL WSC · 999 people · 2019 | 3/4 | SYR4 |
| Bromoform | 152.27 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Nitrate-Nitrite | 50.9 µg/L 0.5% of the EPA limit 10000 µg/L Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 88.39 µg/L — MURVAUL WSC · 999 people · 2019 | 3/4 | SYR4 |
| Dibromochloromethane | 74.64 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Cyanide | 73.44 µg/L 37% of the EPA limit 200 µg/L Highest in the city: SOUTH MURVAUL WSC · 981 people · 2017 | 2/4 | SYR4 |
| Chloroform | 6.07 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 68.045 µg/L — COUNTRY LAKES WATER SUPPLY · 144 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 42.95 µg/L 72% of the EPA limit 60 µg/L Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 52.96 µg/L — COUNTRY LAKES WATER SUPPLY · 144 people · 2019 | 4/4 | SYR4 |
| Barium | 31.88 µg/L 1.6% of the EPA limit 2000 µg/L Main supplier: GARY WSC · 1,050 people · 2018
Highest in the city: 51.5 µg/L — SOUTH MURVAUL WSC · 981 people · 2019 | 3/4 | SYR4 |
| Dibromoacetic Acid | 33.84 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 5.04 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 29.025 µg/L — COUNTRY LAKES WATER SUPPLY · 144 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 17.92 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 26.625 µg/L — COUNTRY LAKES WATER SUPPLY · 144 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 4.74 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 24.785 µg/L — COUNTRY LAKES WATER SUPPLY · 144 people · 2019 | 4/4 | SYR4 |
| Monochloroacetic Acid | 13.52 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019
Highest in the city: 17.05 µg/L — SOUTH MURVAUL WSC · 981 people · 2019 | 4/4 | SYR4 |
| Lead | 13 µg/L 87% of the EPA limit 15 µg/L Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Xylenes, Total | 7.484 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: MURVAUL WSC · 999 people · 2019 | 1/4 | SYR4 |
| Selenium | 4.555 µg/L 9.1% of the EPA limit 50 µg/L Main supplier: GARY WSC · 1,050 people · 2018 | 2/4 | SYR4 |
| Chromium | 3.8 µg/L 3.8% of the EPA limit 100 µg/L Highest in the city: MURVAUL WSC · 999 people · 2019 | 2/4 | SYR4 |
| Monobromoacetic Acid | 3.7 µg/L No EPA limit set Main supplier: GARY WSC · 1,050 people · 2019 | 4/4 | SYR4 |
| Arsenic | 2.1 µg/L 21% of the EPA limit 10 µg/L Main supplier: GARY WSC · 1,050 people · 2018 | 1/4 | SYR4 |
| Ethylbenzene | 1.01 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: MURVAUL WSC · 999 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Main supplier: GARY WSC · 1,050 people · 2012 | 2/4 | SYR4 |
| Carbon Tetrachloride | 0.5600 µg/L 11% of the EPA limit 5 µg/L Main supplier: GARY WSC · 1,050 people · 2019 | 1/4 | SYR4 |
| Lead | 0.00084 mg/L 5.6% of the EPA limit 0.0150 mg/L Main supplier: GARY WSC · 1,050 people · 2025
Highest in the city: 0.0280 mg/L — COUNTRY LAKES WATER SUPPLY · 144 people · 2025 | 4/4 | 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 Gary
| Supplier | Population served |
|---|---|
| GARY WSC | 1,050 |
| MURVAUL WSC | 999 |
| SOUTH MURVAUL WSC | 981 |
| COUNTRY LAKES WATER SUPPLY | 144 |
Frequently asked questions about Gary tap water
Is Gary tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Gary. 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 Gary?
4 public water suppliers report drinking-water monitoring for Gary, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Gary's water?
The contaminants EPA monitoring detected in Gary include Copper, Fluoride, TTHM, Nitrate, Bromoform. 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.