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.
10
health-based violations
14
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2008-03-01 → 2008-03-31 |
| MCL | Health-based | Resolved | 2008-03-01 → 2008-03-31 |
| MCL | Health-based | Resolved | 1993-09-01 → 1993-09-30 |
| MCL | Health-based | Resolved | 1993-09-01 → 1993-09-30 |
| MCL | Health-based | Resolved | 1992-11-01 → 1992-11-30 |
| MCL | Health-based | Resolved | 1992-11-01 → 1992-11-30 |
| MCL | Health-based | Resolved | 1992-10-01 → 1992-10-31 |
| MCL | Health-based | Resolved | 1992-10-01 → 1992-10-31 |
| MCL | Health-based | Resolved | 1992-09-01 → 1992-09-30 |
| MCL | Health-based | Resolved | 1992-09-01 → 1992-09-30 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
Other contaminants detected
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 this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 6821.42 µg/L 68% of the EPA limit 10000 µg/L
worst single sample: 9311.2 µg/L | 624/744 | SYR4 | 2012–2019 |
| 1,2-DIBROMO-3-CHLOROPROPANE | 0.1600 µg/L 80% of the EPA limit 0.2000 µg/L
worst single sample: 0.2200 µg/L | 150/688 | SYR4 | 2012–2019 |
| TTHM | 16.21 µg/L 20% of the EPA limit 80 µg/L
worst single sample: 44.7 µg/L | 79/132 | SYR4 | 2013–2019 |
| Bromoform | 10 µg/L No EPA limit set
worst single sample: 35.8 µg/L | 76/132 | SYR4 | 2013–2019 |
| Dibromochloromethane | 5.15 µg/L No EPA limit set
worst single sample: 6.3 µg/L | 66/132 | SYR4 | 2013–2019 |
| Bromodichloromethane | 2.035 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 54/132 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 9.2 µg/L 15% of the EPA limit 60 µg/L
worst single sample: 15 µg/L | 37/101 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 3 µg/L No EPA limit set
worst single sample: 4 µg/L | 35/101 | SYR4 | 2013–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 28/28 | LCR | 2025 |
| Chloroform | 1.475 µg/L No EPA limit set
worst single sample: 2.3 µg/L | 26/132 | SYR4 | 2013–2019 |
| Fluoride | 1195 µg/L 30% of the EPA limit 4000 µg/L
worst single sample: 1300 µg/L | 22/34 | SYR4 | 2013–2019 |
| Arsenic | 9.9 µg/L 99% of the EPA limit 10 µg/L
worst single sample: 10 µg/L | 21/39 | SYR4 | 2013–2019 |
| Combined Uranium | 9.26035 µg/L 31% of the EPA limit 30 µg/L
worst single sample: 15.496 µg/L | 19/26 | SYR4 | 2013–2019 |
| Barium | 118.25 µg/L 5.9% of the EPA limit 2000 µg/L
worst single sample: 128 µg/L | 14/34 | SYR4 | 2013–2019 |
| Nitrate-Nitrite | 6600 µg/L 66% of the EPA limit 10000 µg/L
worst single sample: 7500 µg/L | 13/27 | SYR4 | 2013–2019 |
| Ethylene Dibromide | 0.0495 µg/L 99% of the EPA limit 0.0500 µg/L
worst single sample: 0.0600 µg/L | 8/688 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 1.7 µg/L No EPA limit set
worst single sample: 2 µg/L | 7/101 | SYR4 | 2013–2019 |
| Monobromoacetic Acid | 2 µg/L No EPA limit set | 7/101 | SYR4 | 2013–2019 |
| Selenium | 5 µg/L 10% of the EPA limit 50 µg/L | 6/34 | SYR4 | 2013–2019 |
| Chromium | 1.8 µg/L 1.8% of the EPA limit 100 µg/L
worst single sample: 2 µg/L | 5/34 | SYR4 | 2013–2019 |
| Bromate | 100.55 µg/L 1006% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 110 µg/L | 4/30 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 10.6 µg/L No EPA limit set
worst single sample: 11 µg/L | 3/101 | SYR4 | 2013–2019 |
| Mercury | 0.1400 µg/L 7% of the EPA limit 2 µg/L | 1/34 | SYR4 | 2013–2019 |
| Toluene | 0.8000 µg/L 0.1% of the EPA limit 1000 µg/L | 1/34 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 1 µg/L No EPA limit set | 1/101 | SYR4 | 2013–2019 |
83 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Vaughn Wc Inc
Is Vaughn Wc Inc tap water safe to drink?
EPA monitoring detected 27 contaminants in Vaughn Wc Inc'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 Vaughn Wc Inc's water?
EPA monitoring detected Nitrate, 1,2-DIBROMO-3-CHLOROPROPANE, TTHM, Bromoform, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Vaughn Wc Inc serve?
Vaughn Wc Inc reports serving 37,189 people in California, per its EPA record.
Has Vaughn Wc Inc had any water quality violations?
The EPA has 14 violations on file for Vaughn Wc Inc, of which 10 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.