What was found in Neenah'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 | 1000 µg/L 10% of the EPA limit 10000 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 2/3 | SYR4 |
| Copper | 66.1 µg/L 5.1% of the EPA limit 1300 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019
Highest in the city: 790.5 µg/L — FOX CROSSING UTILITIES EAST · 10,927 people · 2017 | 3/3 | SYR4 |
| Fluoride | 730 µg/L 18% of the EPA limit 4000 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019
Highest in the city: 783.5 µg/L — FOX CROSSING UTILITIES EAST · 10,927 people · 2017 | 3/3 | SYR4 |
| Nitrate | 230 µg/L 2.3% of the EPA limit 10000 µg/L Highest in the city: FOX CROSSING UTILITIES EAST · 10,927 people · 2019 | 1/3 | SYR4 |
| TTHM | 81.265 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Chloroform | 75.65 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 39.52 µg/L 66% of the EPA limit 60 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 28 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Barium | 5.465 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019
Highest in the city: 18.25 µg/L — FOX CROSSING UTILITIES WEST · 14,000 people · 2017 | 3/3 | SYR4 |
| Lead | 14.45 µg/L 96% of the EPA limit 15 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 12 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 6.4 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.6725 pCi/L 31% of the EPA limit 15 pCi/L Highest in the city: FOX CROSSING UTILITIES WEST · 14,000 people · 2017 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 4.672 pCi/L 93% of the EPA limit 5 pCi/L Highest in the city: FOX CROSSING UTILITIES WEST · 14,000 people · 2017 | 2/3 | SYR4 |
| Monochloroacetic Acid | 2.37 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019
Highest in the city: 2.7 µg/L — FOX CROSSING UTILITIES EAST · 10,927 people · 2019 | 2/3 | SYR4 |
| Monobromoacetic Acid | 2.646 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 2/3 | SYR4 |
| Chromium | 2.1 µg/L 2.1% of the EPA limit 100 µg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 2.04 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 0.4590 µg/L No EPA limit set Main supplier: NEENAH WATERWORKS · 27,506 people · 2019
Highest in the city: 0.4620 µg/L — FOX CROSSING UTILITIES EAST · 10,927 people · 2019 | 3/3 | SYR4 |
| Thallium, Total | 0.2700 µg/L 14% of the EPA limit 2 µg/L Highest in the city: FOX CROSSING UTILITIES WEST · 14,000 people · 2017 | 1/3 | SYR4 |
| Lead | 0.0100 mg/L 67% of the EPA limit 0.0150 mg/L Main supplier: NEENAH WATERWORKS · 27,506 people · 2025 | 3/3 | 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 Neenah
| Supplier | Population served |
|---|---|
| NEENAH WATERWORKS | 27,506 |
| FOX CROSSING UTILITIES WEST | 14,000 |
| FOX CROSSING UTILITIES EAST | 10,927 |
Frequently asked questions about Neenah tap water
Is Neenah tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Neenah. 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 Neenah?
3 public water suppliers report drinking-water monitoring for Neenah, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Neenah's water?
The contaminants EPA monitoring detected in Neenah include Nitrate-Nitrite, Copper, Fluoride, Nitrate, 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.