What was found in Isleta'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-Nitrite | 4400 µg/L 44% of the EPA limit 10000 µg/L Main supplier: Isleta Eastside · 8,941 people · 2019 | 1/3 | SYR4 |
| Fluoride | 764 µg/L 19% of the EPA limit 4000 µg/L Main supplier: Isleta Eastside · 8,941 people · 2018 | 3/3 | SYR4 |
| Copper | 413.55 µg/L 32% of the EPA limit 1300 µg/L Main supplier: Isleta Eastside · 8,941 people · 2017 | 3/3 | SYR4 |
| Barium | 123.85 µg/L 6.2% of the EPA limit 2000 µg/L Main supplier: Isleta Eastside · 8,941 people · 2018 | 3/3 | SYR4 |
| Lithium | 92.8 µg/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2025 | 2/3 | UCMR-5 |
| TTHM | 15.923 µg/L 20% of the EPA limit 80 µg/L Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 34.78 µg/L — Isleta Shea-whiff · 4,403 people · 2019 | 3/3 | SYR4 |
| Toluene | 19.25 µg/L 1.9% of the EPA limit 1000 µg/L Highest in the city: Isleta Los Charcos · 114 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 8.633 µg/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 14.4 µg/L — Isleta Shea-whiff · 4,403 people · 2019 | 3/3 | SYR4 |
| Lead | 13.65 µg/L 91% of the EPA limit 15 µg/L Main supplier: Isleta Eastside · 8,941 people · 2017 | 3/3 | SYR4 |
| Bromodichloromethane | 1.236 µg/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 12.997 µg/L — Isleta Shea-whiff · 4,403 people · 2019 | 3/3 | SYR4 |
| Arsenic | 11.05 µg/L 111% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: Isleta Eastside · 8,941 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 5.699 pCi/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 9.57 pCi/L — Isleta Los Charcos · 114 people · 2018 | 3/3 | SYR4 |
| Bromoform | 8.1375 µg/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 9.283 µg/L — Isleta Los Charcos · 114 people · 2017 | 3/3 | SYR4 |
| Combined Uranium | 8.095 µg/L 27% of the EPA limit 30 µg/L Main supplier: Isleta Eastside · 8,941 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 4.722 µg/L 7.9% of the EPA limit 60 µg/L Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 6.862 µg/L — Isleta Shea-whiff · 4,403 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 5.679 pCi/L 38% of the EPA limit 15 pCi/L Highest in the city: Isleta Shea-whiff · 4,403 people · 2019 | 2/3 | SYR4 |
| Chloroform | 4.628 µg/L No EPA limit set Highest in the city: Isleta Shea-whiff · 4,403 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 4.392 µg/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 1.1 µg/L No EPA limit set Main supplier: Isleta Eastside · 8,941 people · 2019
Highest in the city: 3.2045 µg/L — Isleta Shea-whiff · 4,403 people · 2019 | 3/3 | SYR4 |
| Selenium | 1.78 µg/L 3.6% of the EPA limit 50 µg/L Main supplier: Isleta Eastside · 8,941 people · 2018 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.5978 pCi/L 12% of the EPA limit 5 pCi/L Main supplier: Isleta Eastside · 8,941 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L Main supplier: Isleta Eastside · 8,941 people · 2023 | 3/3 | 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 Isleta
| Supplier | Population served |
|---|---|
| Isleta Eastside | 8,941 |
| Isleta Shea-whiff | 4,403 |
| Isleta Los Charcos | 114 |
Frequently asked questions about Isleta tap water
Is Isleta tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Isleta. 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 Isleta?
3 public water suppliers report drinking-water monitoring for Isleta, New Mexico to the EPA. Each is listed above with its population served.
What contaminants are in Isleta's water?
The contaminants EPA monitoring detected in Isleta include Nitrate-Nitrite, Fluoride, Copper, Barium, Lithium. 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.