What was found in ZIP 53558
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 |
|---|---|---|---|
| Nitrate-Nitrite | 4276.5 µg/L 43% of the EPA limit 10000 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Nitrate | 3940 µg/L 39% of the EPA limit 10000 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Fluoride | 911 µg/L 23% of the EPA limit 4000 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019
Highest in the ZIP: 987 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2019 | 2/2 | SYR4 |
| Copper | 189.3 µg/L 15% of the EPA limit 1300 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018
Highest in the ZIP: 226.9 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2017 | 2/2 | SYR4 |
| Barium | 56.64 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018 | 2/2 | SYR4 |
| TTHM | 10.928 µg/L 14% of the EPA limit 80 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019
Highest in the ZIP: 16.74 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.57 pCi/L 64% of the EPA limit 15 pCi/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Chloroform | 3.9 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019
Highest in the ZIP: 7.775 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 7.735 pCi/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Lead | 5.655 µg/L 38% of the EPA limit 15 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018 | 2/2 | SYR4 |
| Xylenes, Total | 4.3 µg/L 0% of the EPA limit 10000 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 3.88 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019
Highest in the ZIP: 4.225 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 4.18 pCi/L 84% of the EPA limit 5 pCi/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Tetrachloroethylene | 3.45 µg/L 69% of the EPA limit 5 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 3.316 µg/L 5.5% of the EPA limit 60 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 3.16 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 2/2 | SYR4 |
| Chromium | 2.902 µg/L 2.9% of the EPA limit 100 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018 | 1/2 | SYR4 |
| Bromoform | 1.82 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019
Highest in the ZIP: 2.09 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 1.74 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 1.53 µg/L 5.1% of the EPA limit 30 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.33 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.02 µg/L 2% of the EPA limit 50 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018 | 1/2 | SYR4 |
| Trichloroacetic Acid | 0.8120 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019
Highest in the ZIP: 1 µg/L — MCFARLAND WATERWORKS · 9,676 people · 2019 | 2/2 | SYR4 |
| Arsenic | 0.7159 µg/L 7.2% of the EPA limit 10 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018 | 1/2 | SYR4 |
| Toluene | 0.6985 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Ethylbenzene | 0.6800 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 0.5690 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Trichloroethylene | 0.4800 µg/L 9.6% of the EPA limit 5 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| cis-1,2-Dichloroethylene | 0.4000 µg/L 0.6% of the EPA limit 70 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Cadmium | 0.2932 µg/L 5.9% of the EPA limit 5 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2018 | 1/2 | SYR4 |
| 1,1,1-Trichloroethane | 0.1000 µg/L 0.1% of the EPA limit 200 µg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0465 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2024 | 1/2 | UCMR-5 |
| Atrazine | 0.0380 µg/L 1.3% of the EPA limit 3 µg/L Highest in the ZIP: MCFARLAND WATERWORKS · 9,676 people · 2017 | 1/2 | SYR4 |
| Methoxychlor | 0.0200 µg/L 0.1% of the EPA limit 40 µg/L Highest in the ZIP: MCFARLAND WATERWORKS · 9,676 people · 2017 | 1/2 | SYR4 |
| PFHXS | 0.0073 µg/L No EPA limit set Main supplier: MADISON WATER UTILITY · 272,000 people · 2024 | 2/2 | UCMR-5 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: MADISON WATER UTILITY · 272,000 people · 2023
Highest in the ZIP: 0.0021 mg/L — MCFARLAND WATERWORKS · 9,676 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 53558
| Supplier | State | Population served |
|---|---|---|
| MADISON WATER UTILITY | 272,000 | |
| MCFARLAND WATERWORKS | WI | 9,676 |
Frequently asked questions about ZIP 53558 tap water
Is the tap water in ZIP 53558 safe to drink?
EPA testing detected 36 contaminants across the water suppliers serving ZIP 53558. 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 53558?
2 public water suppliers report EPA drinking-water monitoring for ZIP 53558. Each is listed above with its population served.
What contaminants are in ZIP 53558's water?
EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.