What was found in Wellington'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 | 3390 µg/L 34% of the EPA limit 10000 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 1400 µg/L 14% of the EPA limit 10000 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2012
Highest in the city: 1491 µg/L — NORTHERN COLORADO WA · 4,675 people · 2013 | 2/2 | SYR4 |
| Fluoride | 724 µg/L 18% of the EPA limit 4000 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Chlorite | 629.35 µg/L 63% of the EPA limit 1000 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 1/2 | SYR4 |
| Barium | 95.45 µg/L 4.8% of the EPA limit 2000 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019
Highest in the city: 267.4 µg/L — NORTHERN COLORADO WA · 4,675 people · 2017 | 2/2 | SYR4 |
| TTHM | 93.6 µg/L 117% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Chloroform | 69.87 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Lithium | 61.2 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2024 | 2/2 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 51.6 µg/L 86% of the EPA limit 60 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 29.1745 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 27.38 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 23.1 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 8.4 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 6.89 pCi/L No EPA limit set Highest in the city: NORTHERN COLORADO WA · 4,675 people · 2013 | 1/2 | SYR4 |
| Monobromoacetic Acid | 6.67 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 1.95 µg/L 6.5% of the EPA limit 30 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2015
Highest in the city: 4.455 µg/L — NORTHERN COLORADO WA · 4,675 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.9385 pCi/L 13% of the EPA limit 15 pCi/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2015
Highest in the city: 3.678 pCi/L — NORTHERN COLORADO WA · 4,675 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 3.1 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Arsenic | 2.95 µg/L 30% of the EPA limit 10 µg/L Highest in the city: NORTHERN COLORADO WA · 4,675 people · 2017 | 1/2 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 1/2 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.3 pCi/L 26% of the EPA limit 5 pCi/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019
Highest in the city: 1.8905 pCi/L — NORTHERN COLORADO WA · 4,675 people · 2015 | 2/2 | SYR4 |
| Dalapon | 1.82 µg/L 0.9% of the EPA limit 200 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 1.8 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 1/2 | SYR4 |
| Bromoform | 0.8500 µg/L No EPA limit set Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 2/2 | SYR4 |
| Carbon Tetrachloride | 0.5000 µg/L 10% of the EPA limit 5 µg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: WELLINGTON TOWN OF · 11,720 people · 2025 | 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 Wellington
| Supplier | Population served |
|---|---|
| WELLINGTON TOWN OF | 11,720 |
| NORTHERN COLORADO WA | 4,675 |
Frequently asked questions about Wellington tap water
Is Wellington tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Wellington. 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 Wellington?
2 public water suppliers report drinking-water monitoring for Wellington, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Wellington's water?
The contaminants EPA monitoring detected in Wellington include Nitrate, Nitrate-Nitrite, Fluoride, Chlorite, 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.