What was found in Carlinville's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 1700 µg/L 17% of the EPA limit 10000 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 1470 µg/L 15% of the EPA limit 10000 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Fluoride | 899.25 µg/L 22% of the EPA limit 4000 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Chlorite | 892 µg/L 89% of the EPA limit 1000 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Copper | 164.9 µg/L 13% of the EPA limit 1300 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019
Highest in the city: 552.5 µg/L — CENTRAL MACOUPIN COUNTY RWD · 1,883 people · 2019 | 3/3 | SYR4 |
| TTHM | 103.192 µg/L 129% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 3/3 | SYR4 |
| Chloroform | 97.147 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019 | 3/3 | SYR4 |
| Lead | 20.8 µg/L 139% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019
Highest in the city: 64.75 µg/L — LAKE WILLIAMSON CHRISTIAN CENTER · 1,250 people · 2019 | 3/3 | SYR4 |
| Barium | 52.25 µg/L 2.6% of the EPA limit 2000 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 44.4 µg/L 74% of the EPA limit 60 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 28.06 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019
Highest in the city: 29.76 µg/L — CENTRAL MACOUPIN COUNTY RWD · 1,883 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 24.905 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 8.9141 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019
Highest in the city: 12.85 µg/L — CENTRAL MACOUPIN COUNTY RWD · 1,883 people · 2019 | 3/3 | SYR4 |
| Chromium | 7.2 µg/L 7.2% of the EPA limit 100 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 2.90505 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019
Highest in the city: 4.575 µg/L — CENTRAL MACOUPIN COUNTY RWD · 1,883 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 4.11 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Atrazine | 3.5 µg/L 117% of the EPA limit, at the 95th percentile of samples — 3 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Simazine | 2.56 µg/L 64% of the EPA limit 4 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Monochloroacetic Acid | 2.4 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019
Highest in the city: 2.45 µg/L — LAKE WILLIAMSON CHRISTIAN CENTER · 1,250 people · 2019 | 2/3 | SYR4 |
| Arsenic | 2.38 µg/L 24% of the EPA limit 10 µg/L Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.494 µg/L No EPA limit set Main supplier: CARLINVILLE · 6,598 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.3162 pCi/L 26% of the EPA limit 5 pCi/L Main supplier: CARLINVILLE · 6,598 people · 2017 | 1/3 | SYR4 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: CARLINVILLE · 6,598 people · 2025 | 3/3 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Carlinville
| Supplier | Population served |
|---|---|
| CARLINVILLE | 6,598 |
| CENTRAL MACOUPIN COUNTY RWD | 1,883 |
| LAKE WILLIAMSON CHRISTIAN CENTER | 1,250 |
Frequently asked questions about Carlinville tap water
Is Carlinville tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Carlinville. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Carlinville?
3 public water suppliers report drinking-water monitoring for Carlinville, Illinois to the EPA. Each is listed above with its population served.
What contaminants are in Carlinville's water?
The contaminants EPA monitoring detected in Carlinville include Nitrate, Nitrate-Nitrite, Fluoride, Chlorite, Copper. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.