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Tap water quality report

Trabuco Canyon Water District

EPA monitoring tested this supplier for 110 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

110
contaminants tested
18
detected
13,659
people served
4
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
Orange

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.

4
health-based violations
7
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 1999-01-01
TT Health-based Resolved 1999-01-01
TT Health-based Resolved 1999-01-01
MCL Health-based Resolved 1997-08-01 → 1997-08-31
MR Monitoring Resolved 1997-09-01 → 1997-09-30
MR Monitoring Resolved 1996-11-01 → 1996-11-30
MR Monitoring Resolved 1996-11-01 → 1996-11-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
30.4 µg/L
No EPA limit set
 120/121 SYR4 2012–2019
Chloroform
97 µg/L
No EPA limit set
 120/121 SYR4 2012–2019
Dibromochloromethane
31.7 µg/L
No EPA limit set
 120/121 SYR4 2012–2019
Bromoform
6.13 µg/L
No EPA limit set
 119/121 SYR4 2012–2019
TTHM
133 µg/L 166%
of the EPA limit, in the worst sample — 80 µg/L
 119/121 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
30.5 µg/L 51%
of the EPA limit 60 µg/L
 116/118 SYR4 2012–2019
Dichloroacetic Acid
11.3 µg/L
No EPA limit set
 115/116 SYR4 2012–2019
Trichloroacetic Acid
24.1 µg/L
No EPA limit set
 112/116 SYR4 2012–2019
Dibromoacetic Acid
6.11 µg/L
No EPA limit set
 84/116 SYR4 2012–2019
Nitrate
2510 µg/L 25%
of the EPA limit 10000 µg/L
 26/116 SYR4 2012–2019
Lead
0.0039 mg/L 26%
of the EPA limit 0.0150 mg/L
 25/25 LCR 2024
Fluoride
327 µg/L 8.2%
of the EPA limit 4000 µg/L
 12/14 SYR4 2012–2019
Barium
131 µg/L 6.6%
of the EPA limit 2000 µg/L
 7/14 SYR4 2012–2019
Monobromoacetic Acid
2.77 µg/L
No EPA limit set
 6/116 SYR4 2012–2019
Lithium
65.9 µg/L
No EPA limit set
 4/7 UCMR-5 2024
Monochloroacetic Acid
1.29 µg/L
No EPA limit set
 2/116 SYR4 2012–2019
Selenium
5.55 µg/L 11%
of the EPA limit 50 µg/L
 2/14 SYR4 2012–2019
Combined Uranium
3.576 µg/L 12%
of the EPA limit 30 µg/L
 1/3 SYR4 2017
92 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MCKENNEY, LARRY
Phone
949-858-0277
Email
Lmckenney@tcwd.ca.gov

Frequently asked questions about Trabuco Canyon Water District

Is Trabuco Canyon Water District tap water safe to drink?

EPA monitoring detected 18 contaminants in Trabuco Canyon 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 Trabuco Canyon Water District's water?

EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Bromoform, TTHM, and others. The full list with the level and data source for each is above.

How many people does Trabuco Canyon Water District serve?

Trabuco Canyon Water District reports serving 13,659 people in California, per its EPA record.

Has Trabuco Canyon Water District had any water quality violations?

The EPA has 7 violations on file for Trabuco Canyon Water District, 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.