What was found in La Junta'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 | 282 µg/L 7% of the EPA limit 4000 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 1994 µg/L — EAST END WA · 70 people · 2019 | 5/7 | SYR4 |
| Nitrate | 860 µg/L 8.6% of the EPA limit 10000 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2019 | 4/7 | SYR4 |
| TTHM | 13.325 µg/L 17% of the EPA limit 80 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2019
Highest in the city: 32.245 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 7/7 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.1700 pCi/L 1.1% of the EPA limit 15 pCi/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 31 pCi/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 5/7 | SYR4 |
| Gross Beta Particle Activity | 26.9 pCi/L No EPA limit set Highest in the city: SOUTH SWINK WATER AUTHORITY · 622 people · 2014 | 1/7 | SYR4 |
| Combined Radium (-226 And -228) | 0.7000 pCi/L 14% of the EPA limit 5 pCi/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 23.3 pCi/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 5/7 | SYR4 |
| Lithium | 15 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2025 | 1/7 | UCMR-5 |
| Barium | 6.605 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 14 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2017 | 5/7 | SYR4 |
| Bromoform | 2.275 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019
Highest in the city: 13.18 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 6/7 | SYR4 |
| Dibromochloromethane | 5.095 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019
Highest in the city: 9.38 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 4/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 7 µg/L 12% of the EPA limit 60 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2019
Highest in the city: 8.791 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 5/7 | SYR4 |
| Dibromoacetic Acid | 2.58 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019
Highest in the city: 5.904 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 4/7 | SYR4 |
| Arsenic | 0.2700 µg/L 2.7% of the EPA limit 10 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 4.5 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2017 | 2/7 | SYR4 |
| Combined Uranium | 4.051 µg/L 14% of the EPA limit 30 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018 | 2/7 | SYR4 |
| Bromodichloromethane | 4 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019 | 4/7 | SYR4 |
| Chromium | 0.7200 µg/L 0.7% of the EPA limit 100 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 3.8 µg/L — SOUTH SWINK WATER AUTHORITY · 622 people · 2017 | 2/7 | SYR4 |
| Monochloroacetic Acid | 2.59 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019 | 4/7 | SYR4 |
| Selenium | 2.272 µg/L 4.5% of the EPA limit 50 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018 | 1/7 | SYR4 |
| Chloroform | 2.225 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019 | 4/7 | SYR4 |
| Dichloroacetic Acid | 2.07 µg/L No EPA limit set Main supplier: LA JUNTA CITY OF · 8,320 people · 2019 | 3/7 | SYR4 |
| Cadmium | 0.1400 µg/L 2.8% of the EPA limit 5 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018
Highest in the city: 1.9 µg/L — EAST END WA · 70 people · 2019 | 2/7 | SYR4 |
| Monobromoacetic Acid | 1.06 µg/L No EPA limit set Highest in the city: SOUTH SWINK WATER AUTHORITY · 622 people · 2019 | 1/7 | SYR4 |
| Mercury | 0.7000 µg/L 35% of the EPA limit 2 µg/L Highest in the city: EAST END WA · 70 people · 2019 | 1/7 | SYR4 |
| Antimony, Total | 0.0990 µg/L 1.7% of the EPA limit 6 µg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2018 | 1/7 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: LA JUNTA CITY OF · 8,320 people · 2025
Highest in the city: 0.0035 mg/L — SOUTH SIDE WA · 44 people · 2025 | 7/7 | 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 La Junta
| Supplier | Population served |
|---|---|
| LA JUNTA CITY OF | 8,320 |
| BENTS FORT WC | 900 |
| SOUTH SWINK WATER AUTHORITY | 622 |
| HOMESTEAD IMPROVEMENT ASSOCIATION INC | 87 |
| EAST END WA | 70 |
| HOLBROOK CENTER SOFT WA | 54 |
| SOUTH SIDE WA | 44 |
Frequently asked questions about La Junta tap water
Is La Junta tap water safe to drink?
EPA testing detected 25 contaminants in the water serving La Junta. 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 La Junta?
7 public water suppliers report drinking-water monitoring for La Junta, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in La Junta's water?
The contaminants EPA monitoring detected in La Junta include Fluoride, Nitrate, TTHM, Gross Alpha, Excl. Radon And U, Gross Beta Particle Activity. 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.