Is Otay Water District Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: San Diego

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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
TTHM	55.1 µg/L 69% of the EPA limit 80 µg/L worst single sample: 92 µg/L	259/298	SYR4	2012–2019
Bromoform	12 µg/L No EPA limit set worst single sample: 29 µg/L	255/298	SYR4	2012–2019
Bromodichloromethane	16 µg/L No EPA limit set worst single sample: 28 µg/L	251/298	SYR4	2012–2019
Chloroform	15.5 µg/L No EPA limit set worst single sample: 31 µg/L	251/298	SYR4	2012–2019
Dibromochloromethane	19.5 µg/L No EPA limit set worst single sample: 30.1 µg/L	251/298	SYR4	2012–2019
Dichloroacetic Acid	8.915 µg/L No EPA limit set worst single sample: 20 µg/L	240/252	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	16 µg/L 27% of the EPA limit 60 µg/L worst single sample: 32 µg/L	237/252	SYR4	2012–2019
Dibromoacetic Acid	4.6 µg/L No EPA limit set worst single sample: 8 µg/L	226/252	SYR4	2012–2019
Trichloroacetic Acid	4.3 µg/L No EPA limit set worst single sample: 7.7 µg/L	162/252	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	38/38	LCR	2023
Monochloroacetic Acid	4.95 µg/L No EPA limit set worst single sample: 5.4 µg/L	16/252	SYR4	2012–2019
Lithium	28.9 µg/L No EPA limit set	6/8	UCMR-5	2024
Monobromoacetic Acid	1.2 µg/L No EPA limit set	4/252	SYR4	2012–2019

31 contaminants tested, none detected

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Utility contact

Contact: MARTINEZ, JOSE
Phone: 619-670-2210
Email: [email protected]

Frequently asked questions about Otay Water District

Is Otay Water District tap water safe to drink?

EPA monitoring detected 13 contaminants in Otay 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 Otay Water District's water?

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

How many people does Otay Water District serve?

Otay Water District reports serving 238,008 people in California, per its EPA record.

Has Otay Water District had any water quality violations?

The EPA has no formal drinking-water violations on file for Otay Water District.

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.