What was found in Pueblo'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 | 540 µg/L 5.4% of the EPA limit 10000 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 1700 µg/L — BAXTER WATER AND SERVICES · 350 people · 2019 | 3/8 | SYR4 |
| Fluoride | 820 µg/L 21% of the EPA limit 4000 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2018
Highest in the city: 1192 µg/L — BAXTER WATER AND SERVICES · 350 people · 2017 | 3/8 | SYR4 |
| Nitrate-Nitrite | 465 µg/L 4.7% of the EPA limit 10000 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 890 µg/L — BAXTER WATER AND SERVICES · 350 people · 2014 | 3/8 | SYR4 |
| Chlorite | 645 µg/L 65% of the EPA limit 1000 µg/L Highest in the city: ST CHARLES MESA WD · 9,690 people · 2019 | 1/8 | SYR4 |
| Barium | 57.58 µg/L 2.9% of the EPA limit 2000 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019 | 3/8 | SYR4 |
| TTHM | 18.234 µg/L 23% of the EPA limit 80 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 52.805 µg/L — ST CHARLES MESA WD · 9,690 people · 2019 | 3/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 25.9 µg/L 43% of the EPA limit 60 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 31.3 µg/L — ST CHARLES MESA WD · 9,690 people · 2019 | 3/8 | SYR4 |
| Lithium | 14.3 µg/L No EPA limit set Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2025
Highest in the city: 25 µg/L — ST CHARLES MESA WD · 9,690 people · 2025 | 2/8 | UCMR-5 |
| Chloroform | 7.308 µg/L No EPA limit set Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 24 µg/L — ST CHARLES MESA WD · 9,690 people · 2019 | 2/8 | SYR4 |
| Bromoform | 20.5 µg/L No EPA limit set Highest in the city: BAXTER WATER AND SERVICES · 350 people · 2017 | 2/8 | SYR4 |
| Bromodichloromethane | 2.21 µg/L No EPA limit set Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 14.405 µg/L — ST CHARLES MESA WD · 9,690 people · 2019 | 3/8 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.5419 pCi/L 17% of the EPA limit 15 pCi/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2014
Highest in the city: 13.3 pCi/L — BAXTER WATER AND SERVICES · 350 people · 2019 | 3/8 | SYR4 |
| Dichloroacetic Acid | 8.1265 µg/L No EPA limit set Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 12.35 µg/L — ST CHARLES MESA WD · 9,690 people · 2019 | 2/8 | SYR4 |
| Trichloroacetic Acid | 2.6895 µg/L No EPA limit set Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 11.7 µg/L — ST CHARLES MESA WD · 9,690 people · 2019 | 2/8 | SYR4 |
| Selenium | 5.7435 µg/L 11% of the EPA limit 50 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 11 µg/L — BAXTER WATER AND SERVICES · 350 people · 2019 | 3/8 | SYR4 |
| Combined Uranium | 3.57 µg/L 12% of the EPA limit 30 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2014
Highest in the city: 10 µg/L — BAXTER WATER AND SERVICES · 350 people · 2019 | 3/8 | SYR4 |
| Dibromochloromethane | 7.975 µg/L No EPA limit set Highest in the city: ST CHARLES MESA WD · 9,690 people · 2019 | 2/8 | SYR4 |
| Chromium | 1.363 µg/L 1.4% of the EPA limit 100 µg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 4 µg/L — BAXTER WATER AND SERVICES · 350 people · 2019 | 2/8 | SYR4 |
| Dibromoacetic Acid | 1.326 µg/L No EPA limit set Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2019
Highest in the city: 2.4 µg/L — BAXTER WATER AND SERVICES · 350 people · 2017 | 3/8 | SYR4 |
| Monobromoacetic Acid | 2.025 µg/L No EPA limit set Highest in the city: ST CHARLES MESA WD · 9,690 people · 2019 | 1/8 | SYR4 |
| Combined Radium (-226 And -228) | 0.3950 pCi/L 7.9% of the EPA limit 5 pCi/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2012
Highest in the city: 1.3465 pCi/L — ST CHARLES MESA WD · 9,690 people · 2015 | 3/8 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Highest in the city: BAXTER WATER AND SERVICES · 350 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0023 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: PUEBLO BOARD OF WW · 114,070 people · 2025 | 7/8 | 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 Pueblo
| Supplier | Population served |
|---|---|
| PUEBLO BOARD OF WW | 114,070 |
| ST CHARLES MESA WD | 9,690 |
| COUNTRYSIDE ESTATES PUEBLO | 508 |
| PUEBLO GRANDE VILLAGE | 504 |
| BAXTER WATER AND SERVICES | 350 |
| PUEBLO POINTE MHC, LLC | 289 |
| NORTH POINT ESTATES MHP | 271 |
| NEIGHBORS OF DREAMLAND MHP | 115 |
Frequently asked questions about Pueblo tap water
Is Pueblo tap water safe to drink?
EPA testing detected 23 contaminants in the water serving Pueblo. 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 Pueblo?
8 public water suppliers report drinking-water monitoring for Pueblo, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Pueblo's water?
The contaminants EPA monitoring detected in Pueblo include Nitrate, Fluoride, Nitrate-Nitrite, 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.