What was found in Rolla'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-Nitrite | 1390 µg/L 14% of the EPA limit 10000 µg/L Highest in the city: ALTA VISTA MOBILE VILLA · 30 people · 2019 | 1/7 | SYR4 |
| Fluoride | 985 µg/L 25% of the EPA limit 4000 µg/L Main supplier: ROLLA PWS · 20,800 people · 2018 | 1/7 | SYR4 |
| Copper | 178.8 µg/L 14% of the EPA limit 1300 µg/L Main supplier: ROLLA PWS · 20,800 people · 2018
Highest in the city: 256.5 µg/L — LAKESIDE COMMUNITY INC · 160 people · 2019 | 7/7 | SYR4 |
| Barium | 187.4 µg/L 9.4% of the EPA limit 2000 µg/L Main supplier: ROLLA PWS · 20,800 people · 2018
Highest in the city: 225.45 µg/L — STATELY MANSION MOBILE VILLA · 100 people · 2015 | 7/7 | SYR4 |
| Lead | 7.505 µg/L 50% of the EPA limit 15 µg/L Main supplier: ROLLA PWS · 20,800 people · 2018
Highest in the city: 23.108 µg/L — LAKESIDE COMMUNITY INC · 160 people · 2019 | 5/7 | SYR4 |
| TTHM | 11.85 µg/L 15% of the EPA limit 80 µg/L Main supplier: ROLLA PWS · 20,800 people · 2019
Highest in the city: 13.71 µg/L — PHELPS COUNTY PWSD 2 SOUTH · 1,768 people · 2019 | 3/7 | SYR4 |
| Chloroform | 4.426 µg/L No EPA limit set Main supplier: ROLLA PWS · 20,800 people · 2019
Highest in the city: 12.45 µg/L — PHELPS COUNTY PWSD 2 SOUTH · 1,768 people · 2019 | 3/7 | SYR4 |
| Chromium | 1.83 µg/L 1.8% of the EPA limit 100 µg/L Main supplier: ROLLA PWS · 20,800 people · 2018
Highest in the city: 6 µg/L — ALTA VISTA MOBILE VILLA · 30 people · 2018 | 7/7 | SYR4 |
| Dichloroacetic Acid | 4.942 µg/L No EPA limit set Main supplier: ROLLA PWS · 20,800 people · 2019
Highest in the city: 5.129 µg/L — PHELPS COUNTY PWSD 2 SOUTH · 1,768 people · 2019 | 3/7 | SYR4 |
| Bromodichloromethane | 3.85 µg/L No EPA limit set Main supplier: ROLLA PWS · 20,800 people · 2019 | 3/7 | SYR4 |
| Trichloroacetic Acid | 3.15 µg/L No EPA limit set Main supplier: ROLLA PWS · 20,800 people · 2019 | 1/7 | SYR4 |
| Dibromochloromethane | 2.1945 µg/L No EPA limit set Main supplier: ROLLA PWS · 20,800 people · 2019 | 1/7 | SYR4 |
| Arsenic | 1.31 µg/L 13% of the EPA limit 10 µg/L Main supplier: ROLLA PWS · 20,800 people · 2018 | 1/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.3 pCi/L 26% of the EPA limit 5 pCi/L Main supplier: ROLLA PWS · 20,800 people · 2019 | 2/7 | SYR4 |
| Bromoform | 0.8190 µg/L No EPA limit set Main supplier: ROLLA PWS · 20,800 people · 2019 | 1/7 | SYR4 |
| Lead | 0.0039 mg/L 26% of the EPA limit 0.0150 mg/L Main supplier: ROLLA PWS · 20,800 people · 2024 | 7/7 | LCR |
Water suppliers serving Rolla
| Supplier | Population served |
|---|---|
| ROLLA PWS | 20,800 |
| PHELPS COUNTY PWSD 2 SOUTH | 1,768 |
| PHELPS COUNTY PWSD 2 NORTH | 523 |
| LAKESIDE COMMUNITY INC | 160 |
| STATELY MANSION MOBILE VILLA | 100 |
| SHADY LANE TRAILER PARK | 48 |
| ALTA VISTA MOBILE VILLA | 30 |
Frequently asked questions about Rolla tap water
Is Rolla tap water safe to drink?
EPA testing detected 16 contaminants in the water serving Rolla. 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 Rolla?
7 public water suppliers report drinking-water monitoring for Rolla, Missouri to the EPA. Each is listed above with its population served.
What contaminants are in Rolla's water?
The contaminants EPA monitoring detected in Rolla include Nitrate-Nitrite, Fluoride, Copper, Barium, Lead. 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.