What was found in ZIP 62006
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 | 996 µg/L 25% of the EPA limit 4000 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2018 | 1/2 | SYR4 |
| Copper | 396.5 µg/L 31% of the EPA limit 1300 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2018 | 1/2 | SYR4 |
| Barium | 338 µg/L 17% of the EPA limit 2000 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2018 | 1/2 | SYR4 |
| TTHM | 113.98 µg/L 142% of the EPA limit, at the 95th percentile of samples — 80 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Chloroform | 57.435 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Nitrate | 40 µg/L 0.4% of the EPA limit 10000 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 36.865 µg/L 61% of the EPA limit 60 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Lithium | 21.8 µg/L No EPA limit set Main supplier: CAHOKIA HEIGHTS · 12,528 people · 2024
Highest in the ZIP: 36 µg/L — CALHOUN COUNTY RWD · 4,675 people · 2025 | 2/2 | UCMR-5 |
| Bromodichloromethane | 34.335 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 21.78 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 20 µg/L 0.2% of the EPA limit 10000 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2012 | 1/2 | SYR4 |
| Dibromochloromethane | 19.085 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 12.91 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Lead | 7.885 µg/L 53% of the EPA limit 15 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2018 | 1/2 | SYR4 |
| Monobromoacetic Acid | 6.953 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 5.746 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 4.316 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Bromoform | 3.627 µg/L No EPA limit set Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2019 | 1/2 | SYR4 |
| Arsenic | 2.5 µg/L 25% of the EPA limit 10 µg/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.6120 pCi/L 12% of the EPA limit 5 pCi/L Highest in the ZIP: CALHOUN COUNTY RWD · 4,675 people · 2016 | 1/2 | SYR4 |
| Pfba | 0.0148 µg/L No EPA limit set Main supplier: CAHOKIA HEIGHTS · 12,528 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CAHOKIA HEIGHTS · 12,528 people · 2025
Highest in the ZIP: 0.0045 mg/L — CALHOUN COUNTY RWD · 4,675 people · 2025 | 2/2 | LCR |
| Pfhxa | 0.0036 µg/L No EPA limit set Main supplier: CAHOKIA HEIGHTS · 12,528 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0031 µg/L No EPA limit set Main supplier: CAHOKIA HEIGHTS · 12,528 people · 2024 | 1/2 | 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 62006
| Supplier | State | Population served |
|---|---|---|
| CAHOKIA HEIGHTS | IL | 12,528 |
| CALHOUN COUNTY RWD | IL | 4,675 |
Frequently asked questions about ZIP 62006 tap water
Is the tap water in ZIP 62006 safe to drink?
EPA testing detected 24 contaminants across the water suppliers serving ZIP 62006. 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 62006?
2 public water suppliers report EPA drinking-water monitoring for ZIP 62006. Each is listed above with its population served.
What contaminants are in ZIP 62006's water?
EPA monitoring detected Fluoride, Copper, Barium, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.