What was found in Grand Island'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 |
|---|---|---|---|
| Nitrate-Nitrite | 5999 µg/L 60% of the EPA limit 10000 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Copper | 686.75 µg/L 53% of the EPA limit 1300 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Fluoride | 604.65 µg/L 15% of the EPA limit 4000 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2017 | 1/1 | SYR4 |
| Barium | 151.5 µg/L 7.6% of the EPA limit 2000 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2017 | 1/1 | SYR4 |
| TTHM | 54.87 µg/L 69% of the EPA limit 80 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Lithium | 30.9 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2023 | 1/1 | UCMR-5 |
| Combined Uranium | 25.7621 µg/L 86% of the EPA limit 30 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2017 | 1/1 | SYR4 |
| Bromoform | 23.44 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 22.2 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 9.282 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.27 pCi/L 55% of the EPA limit 15 pCi/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2016 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.2595 µg/L 14% of the EPA limit 60 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 6.9795 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 3.57 pCi/L 71% of the EPA limit 5 pCi/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2017 | 1/1 | SYR4 |
| Arsenic | 3.032 µg/L 30% of the EPA limit 10 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2017 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.03 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Chloroform | 3 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Chromium | 2.41 µg/L 2.4% of the EPA limit 100 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2017 | 1/1 | SYR4 |
| Lead | 2.307 µg/L 15% of the EPA limit 15 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.348 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 1.1775 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Chlorobenzene | 0.9630 µg/L 1% of the EPA limit 100 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Endrin | 0.7940 µg/L 40% of the EPA limit 2 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 0.7098 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Atrazine | 0.4804 µg/L 16% of the EPA limit 3 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| Heptachlor Epoxide | 0.2200 µg/L 110% of the EPA limit, at the 95th percentile of samples — 0.2000 µg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2019 | 1/1 | SYR4 |
| PFHXS | 0.0246 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2023 | 1/1 | UCMR-5 |
| PFOS | 0.0075 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2023 | 1/1 | UCMR-5 |
| PFBS | 0.0048 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0034 µg/L No EPA limit set Main supplier: GRAND ISLAND, CITY OF · 51,478 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: GRAND ISLAND, CITY OF · 51,478 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 Grand Island
| Supplier | Population served |
|---|---|
| GRAND ISLAND, CITY OF | 51,478 |
Frequently asked questions about Grand Island tap water
Is Grand Island tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Grand Island. 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 Grand Island?
1 public water supplier report drinking-water monitoring for Grand Island, Nebraska to the EPA. Each is listed above with its population served.
What contaminants are in Grand Island's water?
The contaminants EPA monitoring detected in Grand Island include Nitrate-Nitrite, Copper, Fluoride, 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.