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.
14
health-based violations
18
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2018-01-01 → 2018-01-31 |
| TT | Health-based | Resolved | 2018-01-01 → 2018-01-31 |
| TT | Health-based | Resolved | 2016-01-01 → 2016-01-31 |
| TT | Health-based | Resolved | 2016-01-01 → 2016-01-31 |
| MCL | Health-based | Resolved | 2014-06-01 → 2014-06-30 |
| MCL | Health-based | Resolved | 2014-06-01 → 2014-06-30 |
| TT | Health-based | Resolved | 1993-06-01 → 1993-06-30 |
| TT | Health-based | Resolved | 1993-06-01 → 1993-06-30 |
| TT | Health-based | Resolved | 1993-06-01 → 1993-06-30 |
| TT | Health-based | Resolved | 1993-06-01 → 1993-06-30 |
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 | 7210 µg/L 72% of the EPA limit 10000 µg/L
worst single sample: 14125 µg/L | 22996/23830 | SYR4 | 2012–2019 |
| TTHM | 59.945 µg/L 75% of the EPA limit 80 µg/L
worst single sample: 214.08 µg/L | 9616/12015 | SYR4 | 2012–2019 |
| Fluoride | 807.2 µg/L 20% of the EPA limit 4000 µg/L
worst single sample: 1560 µg/L | 7397/7398 | SYR4 | 2012–2019 |
| Trichloroethylene | 26.5 µg/L 530% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 322 µg/L | 6302/12921 | SYR4 | 2012–2019 |
| Tetrachloroethylene | 19.6 µg/L 392% of the EPA limit, at the 95th percentile of samples — 5 µg/L
worst single sample: 67.3 µg/L | 3104/12926 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 52.59 µg/L 88% of the EPA limit 60 µg/L
worst single sample: 85 µg/L | 1576/1578 | SYR4 | 2012–2019 |
| 1,1-Dichloroethylene | 9.116 µg/L 130% of the EPA limit, at the 95th percentile of samples — 7 µg/L
worst single sample: 15.9 µg/L | 1029/12923 | SYR4 | 2012–2019 |
| Arsenic | 10.875 µg/L 109% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 20.2 µg/L | 726/1201 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 3.29 µg/L 4.7% of the EPA limit 70 µg/L
worst single sample: 7.46 µg/L | 553/4404 | SYR4 | 2012–2019 |
| Combined Uranium | 22.8074 µg/L 76% of the EPA limit 30 µg/L
worst single sample: 30.9473 µg/L | 412/424 | SYR4 | 2012–2019 |
| Carbon Tetrachloride | 2.32 µg/L 46% of the EPA limit 5 µg/L
worst single sample: 2.96 µg/L | 147/12925 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 642000 µg/L 6420% of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 980000 µg/L | 129/241 | SYR4 | 2012–2019 |
| Chromium | 171.5 µg/L 172% of the EPA limit, at the 95th percentile of samples — 100 µg/L
worst single sample: 348 µg/L | 127/1307 | SYR4 | 2012–2019 |
| Barium | 186.6 µg/L 9.3% of the EPA limit 2000 µg/L
worst single sample: 218 µg/L | 118/324 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 10.05 pCi/L No EPA limit set
worst single sample: 14 pCi/L | 80/159 | SYR4 | 2012–2019 |
| 1,1,1-Trichloroethane | 1.896 µg/L 0.9% of the EPA limit 200 µg/L
worst single sample: 2.13 µg/L | 57/4406 | SYR4 | 2012–2019 |
| Selenium | 19.44 µg/L 39% of the EPA limit 50 µg/L
worst single sample: 22.4 µg/L | 53/324 | SYR4 | 2012–2019 |
| Copper | 79.54 µg/L 6.1% of the EPA limit 1300 µg/L
worst single sample: 167 µg/L | 25/342 | SYR4 | 2012–2019 |
| Lead | 0.0039 mg/L 26% of the EPA limit 0.0150 mg/L | 25/25 | LCR | 2023 |
| Lithium | 100 µg/L No EPA limit set | 16/16 | UCMR-5 | 2024 |
| Nitrite | 0.0259 µg/L 0% of the EPA limit 1000 µg/L
worst single sample: 0.0284 µg/L | 11/596 | SYR4 | 2012–2019 |
| 1,2-Dichloroethane | 0.5758 µg/L 12% of the EPA limit 5 µg/L
worst single sample: 0.6030 µg/L | 9/4402 | SYR4 | 2012–2019 |
| Bromate | 11.5 µg/L 115% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 11.9 µg/L | 9/144 | SYR4 | 2012–2019 |
| Lead | 31.9 µg/L 213% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 42.1 µg/L | 6/347 | SYR4 | 2012–2019 |
| Combined Radium (-226 And -228) | 1.2135 pCi/L 24% of the EPA limit 5 pCi/L
worst single sample: 1.26 pCi/L | 4/7 | SYR4 | 2018 |
| Cadmium | 1.2 µg/L 24% of the EPA limit 5 µg/L | 1/324 | SYR4 | 2012–2019 |
| Toluene | 0.5220 µg/L 0.1% of the EPA limit 1000 µg/L | 1/4404 | SYR4 | 2012–2019 |
| Xylenes, Total | 1.89 µg/L 0% of the EPA limit 10000 µg/L | 1/4405 | SYR4 | 2012–2019 |
81 contaminants tested, none detected
1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCarbofuranChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Los Angeles-City, Dept. of Water & Power
Is Los Angeles-City, Dept. of Water & Power tap water safe to drink?
EPA monitoring detected 28 contaminants in Los Angeles-City, Dept. of Water & Power'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 Los Angeles-City, Dept. of Water & Power's water?
EPA monitoring detected Nitrate, TTHM, Fluoride, Trichloroethylene, Tetrachloroethylene, and others. The full list with the level and data source for each is above.
How many people does Los Angeles-City, Dept. of Water & Power serve?
Los Angeles-City, Dept. of Water & Power reports serving 3,875,566 people in California, per its EPA record.
Has Los Angeles-City, Dept. of Water & Power had any water quality violations?
The EPA has 18 violations on file for Los Angeles-City, Dept. of Water & Power, of which 14 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.