What was found in ZIP 61102
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 | 3905 µg/L 39% of the EPA limit 10000 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 3720 µg/L 37% of the EPA limit 10000 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Copper | 1500 µg/L 115% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Fluoride | 1191 µg/L 30% of the EPA limit 4000 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Barium | 345 µg/L 17% of the EPA limit 2000 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 68.65 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.84 µg/L 41% of the EPA limit 60 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| TTHM | 17.4755 µg/L 22% of the EPA limit 80 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Chloroform | 12.28 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 11 µg/L 16% of the EPA limit 70 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 10.2375 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Lead | 8.18 µg/L 55% of the EPA limit 15 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Arsenic | 7.03 µg/L 70% of the EPA limit 10 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Chromium | 5.9 µg/L 5.9% of the EPA limit 100 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 5.108 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 5 pCi/L 100% of the EPA limit 5 pCi/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| 1,1,1-Trichloroethane | 4.675 µg/L 2.3% of the EPA limit 200 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 3.803 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Selenium | 2.77 µg/L 5.5% of the EPA limit 50 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Tetrachloroethylene | 2.195 µg/L 44% of the EPA limit 5 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 2.1185 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Bromoform | 1.965 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Trichloroethylene | 1.7 µg/L 34% of the EPA limit 5 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.395 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| trans-1,2-Dichloroethylene | 1.145 µg/L 1.1% of the EPA limit 100 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Carbon Tetrachloride | 0.8600 µg/L 17% of the EPA limit 5 µg/L Main supplier: ROCKFORD · 147,051 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0073 mg/L 49% of the EPA limit 0.0150 mg/L Main supplier: ROCKFORD · 147,051 people · 2026 | 1/1 | LCR |
| PFHXS | 0.0066 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2025 | 1/1 | UCMR-5 |
| Pfpea | 0.0044 µg/L No EPA limit set Main supplier: ROCKFORD · 147,051 people · 2025 | 1/1 | UCMR-5 |
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 61102
| Supplier | State | Population served |
|---|---|---|
| ROCKFORD | IL | 147,051 |
Frequently asked questions about ZIP 61102 tap water
Is the tap water in ZIP 61102 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 61102. 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 61102?
1 public water supplier report EPA drinking-water monitoring for ZIP 61102. Each is listed above with its population served.
What contaminants are in ZIP 61102's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.