What was found in ZIP 62234
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 | 8910 µg/L 89% of the EPA limit 10000 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2019 | 3/6 | SYR4 |
| Nitrate-Nitrite | 4697.5 µg/L 47% of the EPA limit 10000 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2018
Highest in the ZIP: 6779 µg/L — CLARK COUNTY CONS PWSD 1 · 7,140 people · 2019 | 4/6 | SYR4 |
| Copper | 12.405 µg/L 1% of the EPA limit 1300 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 1944 µg/L — TROY · 16,962 people · 2019 | 6/6 | SYR4 |
| Fluoride | 892.9 µg/L 22% of the EPA limit 4000 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2018
Highest in the ZIP: 1153 µg/L — TROY · 16,962 people · 2019 | 4/6 | SYR4 |
| Barium | 15.7 µg/L 0.8% of the EPA limit 2000 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2018
Highest in the ZIP: 167.5 µg/L — TROY · 16,962 people · 2019 | 4/6 | SYR4 |
| TTHM | 64.375 µg/L 80% of the EPA limit 80 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 123.75 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 6/6 | SYR4 |
| Chloroform | 6.5962 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 107.6 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 6/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.475 µg/L 9.1% of the EPA limit 60 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 78.93 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 5/6 | SYR4 |
| Dichloroacetic Acid | 2.6 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 49.18 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 6/6 | SYR4 |
| Trichloroacetic Acid | 35.32 µg/L No EPA limit set Highest in the ZIP: TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 5/6 | SYR4 |
| Lithium | 25.5 µg/L No EPA limit set Highest in the ZIP: CASEYVILLE · 13,798 people · 2025 | 2/6 | UCMR-5 |
| Dibromochloromethane | 24.03 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019 | 6/6 | SYR4 |
| Bromoform | 19.99 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019 | 4/6 | SYR4 |
| Bromodichloromethane | 13.69 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 17 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 6/6 | SYR4 |
| Lead | 10.23 µg/L 68% of the EPA limit 15 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 14 µg/L — TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 6/6 | SYR4 |
| Chromium | 9.395 µg/L 9.4% of the EPA limit 100 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2018 | 2/6 | SYR4 |
| Monobromoacetic Acid | 1.72 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 6.83 µg/L — CASEYVILLE · 13,798 people · 2019 | 6/6 | SYR4 |
| Dibromoacetic Acid | 5.405 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2019
Highest in the ZIP: 6.465 µg/L — TROY · 16,962 people · 2019 | 6/6 | SYR4 |
| Monochloroacetic Acid | 5.21 µg/L No EPA limit set Highest in the ZIP: TRITOWNSHIP WATER DISTRICT · 3,470 people · 2019 | 3/6 | SYR4 |
| Selenium | 5.2 µg/L 10% of the EPA limit 50 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2018 | 3/6 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.62 µg/L 44% of the EPA limit 6 µg/L Highest in the ZIP: TROY · 16,962 people · 2019 | 1/6 | SYR4 |
| Arsenic | 1.3 µg/L 13% of the EPA limit 10 µg/L Main supplier: COLLINSVILLE · 29,500 people · 2018
Highest in the ZIP: 1.9 µg/L — MARYVILLE · 10,150 people · 2018 | 2/6 | SYR4 |
| Xylenes, Total | 1.5 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: MARYVILLE · 10,150 people · 2018 | 1/6 | SYR4 |
| Combined Radium (-226 And -228) | 1.176 pCi/L 24% of the EPA limit 5 pCi/L Main supplier: COLLINSVILLE · 29,500 people · 2016 | 1/6 | SYR4 |
| Pfhxa | 0.0220 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 1/6 | UCMR-5 |
| Pfpea | 0.0210 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 1/6 | UCMR-5 |
| PFOA | 0.0180 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 1/6 | UCMR-5 |
| PFBS | 0.0160 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 2/6 | UCMR-5 |
| Pfba | 0.0130 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 2/6 | UCMR-5 |
| Pfhpa | 0.0130 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 1/6 | UCMR-5 |
| PFHXS | 0.0120 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 1/6 | UCMR-5 |
| PFOS | 0.0089 µg/L No EPA limit set Main supplier: COLLINSVILLE · 29,500 people · 2024 | 1/6 | UCMR-5 |
| Lead | 0.0045 mg/L 30% of the EPA limit 0.0150 mg/L Main supplier: COLLINSVILLE · 29,500 people · 2025 | 6/6 | 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 62234
| Supplier | State | Population served |
|---|---|---|
| COLLINSVILLE | IL | 29,500 |
| TROY | IL | 16,962 |
| CASEYVILLE | IL | 13,798 |
| MARYVILLE | IL | 10,150 |
| CLARK COUNTY CONS PWSD 1 | MO | 7,140 |
| TRITOWNSHIP WATER DISTRICT | IL | 3,470 |
Frequently asked questions about ZIP 62234 tap water
Is the tap water in ZIP 62234 safe to drink?
EPA testing detected 33 contaminants across the water suppliers serving ZIP 62234. 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 62234?
6 public water suppliers report EPA drinking-water monitoring for ZIP 62234. Each is listed above with its population served.
What contaminants are in ZIP 62234'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.