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 | 1993-06-01 → 1995-11-30 |
| TT | Health-based | Resolved | 1993-06-01 → 1995-11-30 |
| MCL | Health-based | Resolved | 1992-12-01 → 1992-12-31 |
| MCL | Health-based | Resolved | 1992-12-01 → 1992-12-31 |
| MON | Monitoring | Resolved | 2022-04-01 → 2022-04-30 |
| MON | Monitoring | Resolved | 2022-04-01 → 2022-04-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 5650 µg/L 56% of the EPA limit 10000 µg/L
worst single sample: 12000 µg/L | 1946/1948 | SYR4 | 2012–2019 |
| Trichloroethylene | 7.7 µg/L 154% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 14 µg/L | 498/937 | SYR4 | 2012–2019 |
| TTHM | 50.75 µg/L 63% of the EPA limit 80 µg/L
worst single sample: 78 µg/L | 246/259 | SYR4 | 2012–2019 |
| Dibromochloromethane | 14 µg/L No EPA limit set
worst single sample: 24 µg/L | 236/780 | SYR4 | 2012–2019 |
| Bromodichloromethane | 16 µg/L No EPA limit set
worst single sample: 25 µg/L | 218/848 | SYR4 | 2012–2019 |
| Chloroform | 20.45 µg/L No EPA limit set
worst single sample: 48 µg/L | 212/854 | SYR4 | 2012–2019 |
| Bromoform | 6.975 µg/L No EPA limit set
worst single sample: 11 µg/L | 196/810 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 18 µg/L 30% of the EPA limit 60 µg/L
worst single sample: 27 µg/L | 187/248 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 11 µg/L No EPA limit set
worst single sample: 16 µg/L | 172/248 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 4.6 µg/L No EPA limit set
worst single sample: 6.6 µg/L | 163/248 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 7.5 µg/L No EPA limit set
worst single sample: 10 µg/L | 133/248 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 1.9 µg/L 38% of the EPA limit 5 µg/L
worst single sample: 7.8 µg/L | 69/937 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 3.7 µg/L 53% of the EPA limit 7 µg/L
worst single sample: 16 µg/L | 61/936 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 38/38 | LCR | 2025 |
| Fluoride | 470 µg/L 12% of the EPA limit 4000 µg/L
worst single sample: 490 µg/L | 28/28 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 0.6590 µg/L 13% of the EPA limit 5 µg/L
worst single sample: 0.6700 µg/L | 12/951 | SYR4 | 2012–2019 |
| Lithium | 54 µg/L No EPA limit set | 6/17 | UCMR-5 | 2025 |
| Chromium | 16.7 µg/L 17% of the EPA limit 100 µg/L
worst single sample: 17 µg/L | 4/21 | SYR4 | 2012–2019 |
| Combined Uranium | 2.21265 µg/L 7.4% of the EPA limit 30 µg/L
worst single sample: 2.235 µg/L | 4/4 | SYR4 | 2013–2016 |
| Nitrate-Nitrite | 5540 µg/L 55% of the EPA limit 10000 µg/L
worst single sample: 5900 µg/L | 4/4 | SYR4 | 2016–2019 |
| Chlorobenzene | 1.329 µg/L 1.3% of the EPA limit 100 µg/L
worst single sample: 1.4 µg/L | 3/937 | SYR4 | 2012–2019 |
| Arsenic | 2.49 µg/L 25% of the EPA limit 10 µg/L
worst single sample: 2.5 µg/L | 2/21 | SYR4 | 2012–2019 |
| Barium | 150 µg/L 7.5% of the EPA limit 2000 µg/L | 2/21 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 1.2 µg/L 1.7% of the EPA limit 70 µg/L | 1/937 | SYR4 | 2012–2019 |
| trans-1,2-Dichloroethylene | 1.3 µg/L 1.3% of the EPA limit 100 µg/L | 1/937 | SYR4 | 2012–2019 |
53 contaminants tested, none detected
Utility contact
Frequently asked questions about Suburban Water Systems-San Jose
Is Suburban Water Systems-San Jose tap water safe to drink?
EPA monitoring detected 29 contaminants in Suburban Water Systems-San Jose'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 Suburban Water Systems-San Jose's water?
EPA monitoring detected Nitrate, Trichloroethylene, TTHM, Dibromochloromethane, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Suburban Water Systems-San Jose serve?
Suburban Water Systems-San Jose reports serving 168,843 people in California, per its EPA record.
Has Suburban Water Systems-San Jose had any water quality violations?
The EPA has 6 violations on file for Suburban Water Systems-San Jose, of which 4 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.