Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2017-10-31 |
| TT | Health-based | Resolved | 2017-10-31 |
| TT | Health-based | Resolved | 2017-10-31 |
| TT | Health-based | Resolved | 2010-07-02 |
| TT | Health-based | Resolved | 2010-07-02 |
| MCL | Health-based | Resolved | 2008-08-01 → 2008-08-31 |
| MCL | Health-based | Resolved | 2007-12-01 → 2007-12-31 |
| MCL | Health-based | Resolved | 2006-10-01 → 2006-10-31 |
| MCL | Health-based | Resolved | 2005-10-01 → 2005-10-31 |
| MCL | Health-based | Resolved | 2005-10-01 → 2005-10-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 119.6 µg/L 9.2% of the EPA limit 1300 µg/L
worst single sample: 150 µg/L | 40/40 | SYR4 | 2014–2017 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L | 28/28 | LCR | 2023 |
| Lead | 4.635 µg/L 31% of the EPA limit 15 µg/L
worst single sample: 4.8 µg/L | 12/40 | SYR4 | 2014–2017 |
| Bromoform | 7.314 µg/L No EPA limit set
worst single sample: 7.71 µg/L | 7/8 | SYR4 | 2013–2019 |
| TTHM | 9.304 µg/L 12% of the EPA limit 80 µg/L
worst single sample: 9.79 µg/L | 7/8 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 1.675 µg/L No EPA limit set
worst single sample: 1.74 µg/L | 6/8 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 1.675 µg/L 2.8% of the EPA limit 60 µg/L
worst single sample: 1.74 µg/L | 6/8 | SYR4 | 2013–2019 |
| Dibromochloromethane | 2.506 µg/L No EPA limit set
worst single sample: 2.61 µg/L | 5/8 | SYR4 | 2013–2019 |
| Barium | 18.8 µg/L 0.9% of the EPA limit 2000 µg/L
worst single sample: 19 µg/L | 3/3 | SYR4 | 2012–2015 |
| Fluoride | 550 µg/L 14% of the EPA limit 4000 µg/L | 3/3 | SYR4 | 2012–2015 |
| Arsenic | 1.8 µg/L 18% of the EPA limit 10 µg/L | 2/3 | SYR4 | 2012–2015 |
| Bromodichloromethane | 0.6572 µg/L No EPA limit set
worst single sample: 0.6630 µg/L | 2/8 | SYR4 | 2013–2019 |
| Combined Uranium | 3.585 µg/L 12% of the EPA limit 30 µg/L
worst single sample: 3.6 µg/L | 2/2 | SYR4 | 2012–2018 |
| Nitrate-Nitrite | 1400 µg/L 14% of the EPA limit 10000 µg/L | 2/16 | SYR4 | 2012–2019 |
| Selenium | 1.8 µg/L 3.6% of the EPA limit 50 µg/L | 2/3 | SYR4 | 2012–2015 |
| Lithium | 84 µg/L No EPA limit set | 2/2 | UCMR-5 | 2024 |
| Gross Beta Particle Activity | 3.41 pCi/L No EPA limit set | 1/2 | SYR4 | 2012–2018 |
92 contaminants tested, none detected
Utility contact
Frequently asked questions about Santo Domingo Pueblo
Is Santo Domingo Pueblo tap water safe to drink?
EPA monitoring detected 17 contaminants in Santo Domingo Pueblo's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in Santo Domingo Pueblo's water?
EPA monitoring detected Copper, Lead, Lead, Bromoform, TTHM, and others. The full list with the level and data source for each is above.
How many people does Santo Domingo Pueblo serve?
Santo Domingo Pueblo reports serving 5,328 people in New Mexico, per its EPA record.
Has Santo Domingo Pueblo had any water quality violations?
The EPA has 122 violations on file for Santo Domingo Pueblo, of which 35 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.