What was found in Keshena'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 | 51311.5 µg/L 1283% of the EPA limit, at the 95th percentile of samples — 4000 µg/L Main supplier: KESHENA · 3,960 people · 2018 | 5/6 | SYR4 |
| Nitrate | 315 µg/L 3.2% of the EPA limit 10000 µg/L Main supplier: KESHENA · 3,960 people · 2019
Highest in the city: 1600 µg/L — MIDDLE VILLAGE · 310 people · 2019 | 6/6 | SYR4 |
| Nitrate-Nitrite | 1300 µg/L 13% of the EPA limit 10000 µg/L Highest in the city: MIDDLE VILLAGE · 310 people · 2015 | 4/6 | SYR4 |
| Copper | 254 µg/L 20% of the EPA limit 1300 µg/L Main supplier: KESHENA · 3,960 people · 2018
Highest in the city: 910 µg/L — NEOPIT · 1,162 people · 2019 | 6/6 | SYR4 |
| Cyanide | 5 µg/L 2.5% of the EPA limit 200 µg/L Main supplier: KESHENA · 3,960 people · 2018
Highest in the city: 49 µg/L — MIDDLE VILLAGE · 310 people · 2017 | 3/6 | SYR4 |
| Barium | 21.8 µg/L 1.1% of the EPA limit 2000 µg/L Main supplier: KESHENA · 3,960 people · 2018 | 6/6 | SYR4 |
| Arsenic | 2.09 µg/L 21% of the EPA limit 10 µg/L Main supplier: KESHENA · 3,960 people · 2018
Highest in the city: 12.405 µg/L — TRAILER COURT · 68 people · 2017 | 5/6 | SYR4 |
| Lead | 2.8 µg/L 19% of the EPA limit 15 µg/L Main supplier: KESHENA · 3,960 people · 2018
Highest in the city: 8.26 µg/L — MIDDLE VILLAGE · 310 people · 2019 | 6/6 | SYR4 |
| TTHM | 8.05 µg/L 10% of the EPA limit 80 µg/L Main supplier: KESHENA · 3,960 people · 2019 | 5/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.8490 pCi/L 5.7% of the EPA limit 15 pCi/L Main supplier: KESHENA · 3,960 people · 2013
Highest in the city: 3.501 pCi/L — NEOPIT · 1,162 people · 2016 | 6/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.5 µg/L 5.8% of the EPA limit 60 µg/L Main supplier: KESHENA · 3,960 people · 2019 | 5/6 | SYR4 |
| Combined Uranium | 2.79226 µg/L 9.3% of the EPA limit 30 µg/L Main supplier: KESHENA · 3,960 people · 2019 | 5/6 | SYR4 |
| Chromium | 1.875 µg/L 1.9% of the EPA limit 100 µg/L Main supplier: KESHENA · 3,960 people · 2018 | 6/6 | SYR4 |
| Combined Radium (-226 And -228) | 1.20405 pCi/L 24% of the EPA limit 5 pCi/L Main supplier: KESHENA · 3,960 people · 2019 | 5/6 | SYR4 |
| Antimony, Total | 0.7800 µg/L 13% of the EPA limit 6 µg/L Highest in the city: TRAILER COURT · 68 people · 2017 | 1/6 | SYR4 |
| Lead | 0.00065 mg/L 4.3% of the EPA limit 0.0150 mg/L Main supplier: KESHENA · 3,960 people · 2025
Highest in the city: 0.0033 mg/L — NEOPIT · 1,162 people · 2025 | 6/6 | LCR |
Water suppliers serving Keshena
| Supplier | Population served |
|---|---|
| KESHENA | 3,960 |
| NEOPIT | 1,162 |
| MIDDLE VILLAGE | 310 |
| RED WING | 100 |
| ZOAR | 100 |
| TRAILER COURT | 68 |
Frequently asked questions about Keshena tap water
Is Keshena tap water safe to drink?
EPA testing detected 16 contaminants in the water serving Keshena. 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 Keshena?
6 public water suppliers report drinking-water monitoring for Keshena, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Keshena's water?
The contaminants EPA monitoring detected in Keshena include Fluoride, Nitrate, Nitrate-Nitrite, Copper, Cyanide. 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.