What was found in Valley City'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 |
|---|---|---|---|
| Copper | 200.25 µg/L 15% of the EPA limit 1300 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018
Highest in the city: 1065 µg/L — BARNES RURAL WATER DISTRICT · 4,938 people · 2017 | 2/2 | SYR4 |
| Fluoride | 763 µg/L 19% of the EPA limit 4000 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018
Highest in the city: 1030 µg/L — BARNES RURAL WATER DISTRICT · 4,938 people · 2018 | 2/2 | SYR4 |
| Nitrate-Nitrite | 555.5 µg/L 5.6% of the EPA limit 10000 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Nitrate | 460 µg/L 4.6% of the EPA limit 10000 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 1/2 | SYR4 |
| Lithium | 32 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2024
Highest in the city: 93.5 µg/L — BARNES RURAL WATER DISTRICT · 4,938 people · 2025 | 2/2 | UCMR-5 |
| TTHM | 33.868 µg/L 42% of the EPA limit 80 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Nitrite | 19 µg/L 1.9% of the EPA limit 1000 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 1/2 | SYR4 |
| Barium | 6.63 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018
Highest in the city: 17.9 µg/L — BARNES RURAL WATER DISTRICT · 4,938 people · 2018 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 16.776 µg/L 28% of the EPA limit 60 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Chloroform | 16.32 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 12.024 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Lead | 10.2945 µg/L 69% of the EPA limit 15 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018 | 2/2 | SYR4 |
| Dichloroacetic Acid | 9.776 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 8.526 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 5.415 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Chromium | 4.62 µg/L 4.6% of the EPA limit 100 µg/L Highest in the city: BARNES RURAL WATER DISTRICT · 4,938 people · 2018 | 1/2 | SYR4 |
| Dibromoacetic Acid | 4.073 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.271 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.8225 µg/L No EPA limit set Main supplier: VALLEY CITY CITY OF · 6,585 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.68 µg/L 3.4% of the EPA limit 50 µg/L Highest in the city: BARNES RURAL WATER DISTRICT · 4,938 people · 2018 | 1/2 | SYR4 |
| Tetrachloroethylene | 1.486 µg/L 30% of the EPA limit 5 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018 | 1/2 | SYR4 |
| cis-1,2-Dichloroethylene | 1.14 µg/L 1.6% of the EPA limit 70 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018 | 1/2 | SYR4 |
| Combined Uranium | 1 µg/L 3.3% of the EPA limit 30 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018 | 1/2 | SYR4 |
| Trichloroethylene | 1 µg/L 20% of the EPA limit 5 µg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2018 | 1/2 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: VALLEY CITY CITY OF · 6,585 people · 2024 | 2/2 | 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 Valley City
| Supplier | Population served |
|---|---|
| VALLEY CITY CITY OF | 6,585 |
| BARNES RURAL WATER DISTRICT | 4,938 |
Frequently asked questions about Valley City tap water
Is Valley City tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Valley City. 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 Valley City?
2 public water suppliers report drinking-water monitoring for Valley City, North Dakota to the EPA. Each is listed above with its population served.
What contaminants are in Valley City's water?
The contaminants EPA monitoring detected in Valley City include Copper, Fluoride, Nitrate-Nitrite, Nitrate, Lithium. 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.