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Tap water quality report

Azusa Light and Water

EPA monitoring tested this supplier for 109 contaminants and detected 21. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
21
detected
110,044
people served
2
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
Los Angeles

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.

2
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1992-10-01 → 1992-11-30
MCL Health-based Resolved 1992-10-01 → 1992-11-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0058 µg/L 3/12 2024
PFOA 0.0077 µg/L 2/12 2024
Pfhxa 0.0035 µg/L 1/12 2024

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
12000 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 13108 µg/L
1502/2204 SYR4 2012–2019
Arsenic
16 µg/L 160%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 34 µg/L
454/576 SYR4 2012–2019
TTHM
68.4 µg/L 86%
of the EPA limit 80 µg/L
worst single sample: 120 µg/L
259/259 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
21.35 µg/L 36%
of the EPA limit 60 µg/L
worst single sample: 42 µg/L
254/259 SYR4 2012–2019
Bromodichloromethane
18 µg/L
No EPA limit set
worst single sample: 25 µg/L
246/259 SYR4 2012–2019
Dibromochloromethane
25.9 µg/L
No EPA limit set
worst single sample: 47 µg/L
243/259 SYR4 2012–2019
Bromoform
21.5 µg/L
No EPA limit set
worst single sample: 36 µg/L
231/259 SYR4 2012–2019
Chloroform
29 µg/L
No EPA limit set
worst single sample: 48 µg/L
219/259 SYR4 2012–2019
Dibromoacetic Acid
8.225 µg/L
No EPA limit set
worst single sample: 13 µg/L
216/259 SYR4 2012–2019
Dichloroacetic Acid
11.15 µg/L
No EPA limit set
worst single sample: 20 µg/L
198/259 SYR4 2012–2019
Trichloroacetic Acid
9.735 µg/L
No EPA limit set
worst single sample: 21 µg/L
172/259 SYR4 2012–2019
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
worst single sample: 460 µg/L
76/79 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 40/40 LCR 2023
Barium
222 µg/L 11%
of the EPA limit 2000 µg/L
worst single sample: 230 µg/L
29/36 SYR4 2012–2019
Tetrachloroethylene
0.9975 µg/L 20%
of the EPA limit 5 µg/L
worst single sample: 1 µg/L
26/119 SYR4 2012–2019
Combined Uranium
5.4385 µg/L 18%
of the EPA limit 30 µg/L
worst single sample: 6.556 µg/L
7/13 SYR4 2012–2018
Monobromoacetic Acid
1.58 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
2/259 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
5.1 µg/L 85%
of the EPA limit 6 µg/L
 1/87 SYR4 2013–2019
88 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-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BARBOSA, MELISSA
Phone
626-812-5173
Email
[email protected]

Frequently asked questions about Azusa Light and Water

Is Azusa Light and Water tap water safe to drink?

EPA monitoring detected 21 contaminants in Azusa Light and Water'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 Azusa Light and Water's water?

EPA monitoring detected Nitrate, Arsenic, TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Azusa Light and Water serve?

Azusa Light and Water reports serving 110,044 people in California, per its EPA record.

Has Azusa Light and Water had any water quality violations?

The EPA has 2 violations on file for Azusa Light and Water, of which 2 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.