What was found in Trinidad'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 | 1200 µg/L 30% of the EPA limit 4000 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| Gross Beta Particle Activity | 144 pCi/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| TTHM | 42.33 µg/L 53% of the EPA limit 80 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 74.22 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 10/10 | SYR4 |
| Chloroform | 35.52 µg/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 44.824 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 10/10 | SYR4 |
| Barium | 43 µg/L 2.2% of the EPA limit 2000 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| Total Haloacetic Acids (HAA5) | 18.725 µg/L 31% of the EPA limit 60 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 38.445 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 10/10 | SYR4 |
| Nitrate | 26 µg/L 0.3% of the EPA limit 10000 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| Bromodichloromethane | 7.62 µg/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 21.4 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 10/10 | SYR4 |
| Dibromochloromethane | 1.145 µg/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 21.32 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 10/10 | SYR4 |
| Dichloroacetic Acid | 9.09 µg/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 20.152 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 10/10 | SYR4 |
| Trichloroacetic Acid | 10.325 µg/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 13.88 µg/L — EL MORO HOEHNE PIPELINE ASSOC · 655 people · 2019 | 10/10 | SYR4 |
| Monobromoacetic Acid | 9.7455 µg/L No EPA limit set Highest in the city: SANTA FE TRAIL RANCH MD · 360 people · 2019 | 2/10 | SYR4 |
| Bromoform | 7.4 µg/L No EPA limit set Highest in the city: SANTA FE TRAIL RANCH MD · 360 people · 2019 | 1/10 | SYR4 |
| Monochloroacetic Acid | 2.34 µg/L No EPA limit set Main supplier: TRINIDAD CITY OF · 11,400 people · 2019
Highest in the city: 4.496 µg/L — SANTA FE TRAIL RANCH MD · 360 people · 2019 | 6/10 | SYR4 |
| Combined Uranium | 0.8900 µg/L 3% of the EPA limit 30 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| Combined Radium (-226 And -228) | 0.8000 pCi/L 16% of the EPA limit 5 pCi/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| Mercury | 0.1200 µg/L 6% of the EPA limit 2 µg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2019 | 1/10 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TRINIDAD CITY OF · 11,400 people · 2023
Highest in the city: 0.0020 mg/L — CHICOSA WATER USERS ASSOCIATION · 40 people · 2025 | 10/10 | 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 Trinidad
| Supplier | Population served |
|---|---|
| TRINIDAD CITY OF | 11,400 |
| EL MORO HOEHNE PIPELINE ASSOC | 655 |
| SANTA FE TRAIL RANCH MD | 360 |
| SUNFLOWER VALLEY PIPELINE ASSN | 312 |
| GREETVILLE CARBONDALE WATER | 210 |
| TRINIDAD LAKE RANCHES POA | 200 |
| COKEDALE TOWN OF | 120 |
| STARKVILLE TOWN OF | 62 |
| PINON WSD | 50 |
| CHICOSA WATER USERS ASSOCIATION | 40 |
Frequently asked questions about Trinidad tap water
Is Trinidad tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Trinidad. 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 Trinidad?
10 public water suppliers report drinking-water monitoring for Trinidad, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Trinidad's water?
The contaminants EPA monitoring detected in Trinidad include Fluoride, Gross Beta Particle Activity, TTHM, Chloroform, 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.