What was found in ZIP 53187
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 912.5 µg/L 23% of the EPA limit 4000 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019 | 2/2 | SYR4 |
| Nitrate | 170 µg/L 1.7% of the EPA limit 10000 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 250 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Copper | 208 µg/L 16% of the EPA limit 1300 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2017
Highest in the ZIP: 221 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 2/2 | SYR4 |
| Barium | 170.5 µg/L 8.5% of the EPA limit 2000 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2017
Highest in the ZIP: 185 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 2/2 | SYR4 |
| Nitrate-Nitrite | 100 µg/L 1% of the EPA limit 10000 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2017
Highest in the ZIP: 160 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 2/2 | SYR4 |
| Cyanide | 39.4 µg/L 20% of the EPA limit 200 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2015 | 1/2 | SYR4 |
| TTHM | 19.79 µg/L 25% of the EPA limit 80 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 29.86 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 28.88 pCi/L 193% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 18.505 pCi/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019 | 1/2 | SYR4 |
| Lead | 3.42 µg/L 23% of the EPA limit 15 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2017
Highest in the ZIP: 18.2 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 12.0395 pCi/L 241% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 5.36 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 9.22 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 6.4 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 8.02 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Chloroform | 6.26 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 6.895 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Arsenic | 2.79 µg/L 28% of the EPA limit 10 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2017
Highest in the ZIP: 6.13 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 2/2 | SYR4 |
| Xylenes, Total | 5.695 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the ZIP: PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 1.35867 µg/L 4.5% of the EPA limit 30 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 5.22667 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.9476 µg/L 6.6% of the EPA limit 60 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 4.678 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.8715 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 3.66 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 2.355 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 1.51 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 1.59 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 0.7350 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019
Highest in the ZIP: 1.4825 µg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 2/2 | SYR4 |
| Ethylbenzene | 0.7080 µg/L 0.1% of the EPA limit 700 µg/L Highest in the ZIP: PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 0.4870 µg/L No EPA limit set Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2019 | 2/2 | SYR4 |
| Antimony, Total | 0.4200 µg/L 7% of the EPA limit 6 µg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2017 | 1/2 | SYR4 |
| Mercury | 0.3100 µg/L 16% of the EPA limit 2 µg/L Highest in the ZIP: PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 1/2 | SYR4 |
| Thallium, Total | 0.2300 µg/L 12% of the EPA limit 2 µg/L Highest in the ZIP: PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2017 | 1/2 | SYR4 |
| Lead | 0.00056 mg/L 3.7% of the EPA limit 0.0150 mg/L Main supplier: WAUKESHA WATER UTILITY · 70,718 people · 2024
Highest in the ZIP: 0.0026 mg/L — PEWAUKEE CITY WATER AND SEWER UTILITY · 8,671 people · 2023 | 2/2 | 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.
Water suppliers serving ZIP 53187
| Supplier | State | Population served |
|---|---|---|
| WAUKESHA WATER UTILITY | 70,718 | |
| PEWAUKEE CITY WATER AND SEWER UTILITY | WI | 8,671 |
Frequently asked questions about ZIP 53187 tap water
Is the tap water in ZIP 53187 safe to drink?
EPA testing detected 28 contaminants across the water suppliers serving ZIP 53187. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 53187?
2 public water suppliers report EPA drinking-water monitoring for ZIP 53187. Each is listed above with its population served.
What contaminants are in ZIP 53187's water?
EPA monitoring detected Fluoride, Nitrate, Copper, Barium, Nitrate-Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.