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.
0
health-based violations
191
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
| MR | Monitoring | Resolved | 2017-01-01 → 2019-12-31 |
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 | 4810 µg/L 48% of the EPA limit 10000 µg/L
worst single sample: 7780 µg/L | 1056/1056 | SYR4 | 2012–2019 |
| Chloroform | 36 µg/L No EPA limit set
worst single sample: 55 µg/L | 527/530 | SYR4 | 2012–2019 |
| TTHM | 74 µg/L 93% of the EPA limit 80 µg/L
worst single sample: 94 µg/L | 524/528 | SYR4 | 2012–2019 |
| Bromodichloromethane | 22 µg/L No EPA limit set
worst single sample: 25 µg/L | 511/530 | SYR4 | 2012–2019 |
| Dibromochloromethane | 16 µg/L No EPA limit set
worst single sample: 19.5 µg/L | 507/530 | SYR4 | 2012–2019 |
| Bromoform | 3.4 µg/L No EPA limit set
worst single sample: 6 µg/L | 504/530 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 24.64 µg/L No EPA limit set
worst single sample: 35 µg/L | 499/508 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 42.91 µg/L 72% of the EPA limit 60 µg/L
worst single sample: 58 µg/L | 499/508 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 11 µg/L No EPA limit set
worst single sample: 14 µg/L | 498/508 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 4.4 µg/L No EPA limit set
worst single sample: 28.1 µg/L | 497/508 | SYR4 | 2012–2019 |
| Fluoride | 728 µg/L 18% of the EPA limit 4000 µg/L
worst single sample: 753 µg/L | 427/427 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 5100 µg/L 51% of the EPA limit 10000 µg/L
worst single sample: 7780 µg/L | 353/353 | SYR4 | 2012–2019 |
| Combined Uranium | 2.9 µg/L 9.7% of the EPA limit 30 µg/L
worst single sample: 3.7 µg/L | 220/221 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 3.6 µg/L No EPA limit set
worst single sample: 5.4 µg/L | 201/508 | SYR4 | 2012–2019 |
| Barium | 84.93 µg/L 4.2% of the EPA limit 2000 µg/L
worst single sample: 110 µg/L | 143/143 | SYR4 | 2012–2019 |
| Selenium | 2.51 µg/L 5% of the EPA limit 50 µg/L
worst single sample: 4 µg/L | 139/143 | SYR4 | 2012–2019 |
| Arsenic | 3.3 µg/L 33% of the EPA limit 10 µg/L
worst single sample: 4 µg/L | 134/143 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.6 µg/L No EPA limit set
worst single sample: 2.3 µg/L | 106/508 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 8 pCi/L 53% of the EPA limit 15 pCi/L
worst single sample: 11 pCi/L | 69/97 | SYR4 | 2012–2019 |
| Lithium | 43.3 µg/L No EPA limit set | 52/61 | UCMR-5 | 2025 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L | 18/18 | LCR | 2025 |
| Copper | 10.22 µg/L 0.8% of the EPA limit 1300 µg/L
worst single sample: 11 µg/L | 14/143 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Phthalate | 3.6 µg/L 60% of the EPA limit 6 µg/L
worst single sample: 3.9 µg/L | 13/364 | SYR4 | 2012–2019 |
| Lead | 2.68 µg/L 18% of the EPA limit 15 µg/L
worst single sample: 2.8 µg/L | 13/144 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.232 pCi/L 25% of the EPA limit 5 pCi/L
worst single sample: 1.24 pCi/L | 5/156 | SYR4 | 2012–2019 |
| Picloram | 0.3460 µg/L 0.1% of the EPA limit 500 µg/L
worst single sample: 0.3500 µg/L | 2/299 | SYR4 | 2012–2019 |
| 2,4-D | 0.2300 µg/L 0.3% of the EPA limit 70 µg/L | 1/296 | SYR4 | 2012–2019 |
| Chromium | 5.5 µg/L 5.5% of the EPA limit 100 µg/L | 1/143 | SYR4 | 2012–2019 |
| Di(2-ethylhexyl) Adipate | 3.3 µg/L 0.8% of the EPA limit 400 µg/L | 1/318 | SYR4 | 2012–2019 |
81 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Las Vegas Valley Water District
Is Las Vegas Valley Water District tap water safe to drink?
EPA monitoring detected 31 contaminants in Las Vegas Valley Water District'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 Las Vegas Valley Water District's water?
EPA monitoring detected Nitrate, Chloroform, TTHM, Bromodichloromethane, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Las Vegas Valley Water District serve?
Las Vegas Valley Water District reports serving 1,539,277 people in Nevada, per its EPA record.
Has Las Vegas Valley Water District had any water quality violations?
The EPA has 191 violations on file for Las Vegas Valley Water District, of which 0 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.