What was found in Riverton'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 |
|---|---|---|---|
| Fluoride | 900 µg/L 23% of the EPA limit 4000 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 2350 µg/L — FIRST FIKE SUBDIVISION · 150 people · 2018 | 12/12 | SYR4 |
| Nitrate-Nitrite | 60 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 1006 µg/L — JEFFREY CITY WATER & SEWER DISTRICT · 40 people · 2019 | 7/12 | SYR4 |
| Nitrate | 910 µg/L 9.1% of the EPA limit 10000 µg/L Highest in the city: JEFFREY CITY WATER & SEWER DISTRICT · 40 people · 2018 | 2/12 | SYR4 |
| Copper | 545 µg/L 42% of the EPA limit 1300 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2017
Highest in the city: 763 µg/L — A & J MOBILE HOME PARK · 100 people · 2019 | 11/12 | SYR4 |
| Barium | 200 µg/L 10% of the EPA limit 2000 µg/L Highest in the city: B&K MOBILE HOME PARK · 200 people · 2019 | 4/12 | SYR4 |
| Chromium | 100 µg/L 100% of the EPA limit 100 µg/L Highest in the city: JEFFREY CITY WATER & SEWER DISTRICT · 40 people · 2018 | 1/12 | SYR4 |
| TTHM | 38 µg/L 48% of the EPA limit 80 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 4/12 | SYR4 |
| Chloroform | 34.66 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 3/12 | SYR4 |
| Cyanide | 31 µg/L 16% of the EPA limit 200 µg/L Highest in the city: A & J MOBILE HOME PARK · 100 people · 2019 | 1/12 | SYR4 |
| Total Haloacetic Acids (HAA5) | 22 µg/L 37% of the EPA limit 60 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 4/12 | SYR4 |
| Trichloroacetic Acid | 16 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 1/12 | SYR4 |
| Combined Uranium | 0.0010 µg/L 0% of the EPA limit 30 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 14.5 µg/L — JEFFREY CITY WATER & SEWER DISTRICT · 40 people · 2019 | 4/12 | SYR4 |
| Arsenic | 13.1 µg/L 131% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: B&K MOBILE HOME PARK · 200 people · 2019 | 2/12 | SYR4 |
| Dichloroacetic Acid | 10.84 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 2/12 | SYR4 |
| Nitrite | 10 µg/L 1% of the EPA limit 1000 µg/L Highest in the city: B&K MOBILE HOME PARK · 200 people · 2018 | 1/12 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.845 pCi/L 39% of the EPA limit 15 pCi/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 9.3 pCi/L — FARVIEW WATER AND SEWER DISTRICT · 60 people · 2019 | 11/12 | SYR4 |
| Selenium | 9 µg/L 18% of the EPA limit 50 µg/L Highest in the city: SECOND FIKE SUBDIVISION · 34 people · 2018 | 3/12 | SYR4 |
| Lead | 7.2 µg/L 48% of the EPA limit 15 µg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2017 | 7/12 | SYR4 |
| Dichloromethane | 6.8 µg/L 136% of the EPA limit, at the 95th percentile of samples — 5 µg/L Highest in the city: B&K MOBILE HOME PARK · 200 people · 2019 | 2/12 | SYR4 |
| Dibromochloromethane | 4.46 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 5.778 µg/L — SUNRIDGE ESTATES · 220 people · 2018 | 4/12 | SYR4 |
| Bromodichloromethane | 5.635 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 4/12 | SYR4 |
| Combined Radium (-226 And -228) | 5.2 pCi/L 104% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 7/12 | SYR4 |
| Bromoform | 3.925 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 4.742 µg/L — SUNRIDGE ESTATES · 220 people · 2018 | 4/12 | SYR4 |
| Dibromoacetic Acid | 0.8480 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019
Highest in the city: 3.92 µg/L — SUNRIDGE ESTATES · 220 people · 2017 | 4/12 | SYR4 |
| Antimony, Total | 1 µg/L 17% of the EPA limit 6 µg/L Highest in the city: FARVIEW WATER AND SEWER DISTRICT · 60 people · 2017 | 1/12 | SYR4 |
| Monochloroacetic Acid | 0.8500 µg/L No EPA limit set Main supplier: RIVERTON, CITY OF · 10,330 people · 2019 | 1/12 | SYR4 |
| Asbestos | 0.2000 MFL 2.9% of the EPA limit 7 MFL Main supplier: RIVERTON, CITY OF · 10,330 people · 2015 | 2/12 | SYR4 |
| Lead | 0.0040 mg/L 27% of the EPA limit 0.0150 mg/L Main supplier: RIVERTON, CITY OF · 10,330 people · 2023
Highest in the city: 0.0110 mg/L — FIRST FIKE SUBDIVISION · 150 people · 2023 | 12/12 | 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 Riverton
| Supplier | Population served |
|---|---|
| RIVERTON, CITY OF | 10,330 |
| GARDENS NORTH HOMEOWNERS ASSOCIATION | 300 |
| SUNRIDGE ESTATES | 220 |
| B&K MOBILE HOME PARK | 200 |
| JADE MHC | 200 |
| MOUNTAIN VIEW ACRES | 165 |
| FIRST FIKE SUBDIVISION | 150 |
| A & J MOBILE HOME PARK | 100 |
| RAINTREE ESTATES | 100 |
| FARVIEW WATER AND SEWER DISTRICT | 60 |
| JEFFREY CITY WATER & SEWER DISTRICT | 40 |
| SECOND FIKE SUBDIVISION | 34 |
Frequently asked questions about Riverton tap water
Is Riverton tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Riverton. 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 Riverton?
12 public water suppliers report drinking-water monitoring for Riverton, Wyoming to the EPA. Each is listed above with its population served.
What contaminants are in Riverton's water?
The contaminants EPA monitoring detected in Riverton include Fluoride, Nitrate-Nitrite, Nitrate, Copper, Barium. 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.