What was found in Beaver Dam'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 | 8230 µg/L 82% of the EPA limit 10000 µg/L Highest in the city: MAPLE GROVE MHP · 125 people · 2018 | 2/4 | SYR4 |
| Nitrate-Nitrite | 6820 µg/L 68% of the EPA limit 10000 µg/L Highest in the city: MAPLE GROVE MHP · 125 people · 2019 | 1/4 | SYR4 |
| Fluoride | 831.75 µg/L 21% of the EPA limit 4000 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 4/4 | SYR4 |
| Barium | 18.39 µg/L 0.9% of the EPA limit 2000 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2017
Highest in the city: 231.8 µg/L — NORTH HILLS MHP · 420 people · 2018 | 4/4 | SYR4 |
| Copper | 92.97 µg/L 7.2% of the EPA limit 1300 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2017
Highest in the city: 187.2 µg/L — MAPLE GROVE MHP · 125 people · 2018 | 4/4 | SYR4 |
| Lead | 19.14 µg/L 128% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2017 | 4/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.15333 pCi/L 14% of the EPA limit 15 pCi/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2014
Highest in the city: 14.8153 pCi/L — NORTH HILLS MHP · 420 people · 2018 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 12.279 µg/L 20% of the EPA limit 60 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| TTHM | 10.8185 µg/L 14% of the EPA limit 80 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Monochloroacetic Acid | 10.695 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.7900 pCi/L 16% of the EPA limit 5 pCi/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2014
Highest in the city: 7.68 pCi/L — NORTH HILLS MHP · 420 people · 2019 | 4/4 | SYR4 |
| Gross Beta Particle Activity | 5.635 pCi/L No EPA limit set Highest in the city: MAPLE GROVE MHP · 125 people · 2017 | 2/4 | SYR4 |
| Chloroform | 4.77 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.5 µg/L 58% of the EPA limit 6 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2017 | 1/4 | SYR4 |
| Bromodichloromethane | 3.48 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 3.18705 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Dibromochloromethane | 2.835 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Thallium, Total | 1.93 µg/L 97% of the EPA limit 2 µg/L Highest in the city: SUNNYSIDE ESTATES · 135 people · 2018 | 1/4 | SYR4 |
| Dichloroacetic Acid | 1.456 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Trichloroacetic Acid | 1.01 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Arsenic | 0.9950 µg/L 10% of the EPA limit 10 µg/L Highest in the city: NORTH HILLS MHP · 420 people · 2018 | 1/4 | SYR4 |
| Bromoform | 0.8855 µg/L No EPA limit set Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2019 | 1/4 | SYR4 |
| Combined Uranium | 0.0700 µg/L 0.2% of the EPA limit 30 µg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2014
Highest in the city: 0.5480 µg/L — MAPLE GROVE MHP · 125 people · 2018 | 3/4 | SYR4 |
| Chromium | 0.4000 µg/L 0.4% of the EPA limit 100 µg/L Highest in the city: NORTH HILLS MHP · 420 people · 2018 | 1/4 | SYR4 |
| Cadmium | 0.2641 µg/L 5.3% of the EPA limit 5 µg/L Highest in the city: SUNNYSIDE ESTATES · 135 people · 2018 | 1/4 | SYR4 |
| Lead | 0.0113 mg/L 75% of the EPA limit 0.0150 mg/L Main supplier: BEAVER DAM WATER UTILITY · 16,200 people · 2023 | 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 Beaver Dam
| Supplier | Population served |
|---|---|
| BEAVER DAM WATER UTILITY | 16,200 |
| NORTH HILLS MHP | 420 |
| SUNNYSIDE ESTATES | 135 |
| MAPLE GROVE MHP | 125 |
Frequently asked questions about Beaver Dam tap water
Is Beaver Dam tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Beaver Dam. 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 Beaver Dam?
4 public water suppliers report drinking-water monitoring for Beaver Dam, Wisconsin to the EPA. Each is listed above with its population served.
What contaminants are in Beaver Dam's water?
The contaminants EPA monitoring detected in Beaver Dam include Nitrate, Nitrate-Nitrite, Fluoride, Barium, Copper. 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.