Is Las Ventanas Ranch Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: San Luis Obispo

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
Nitrate	2786.8 µg/L 28% of the EPA limit 10000 µg/L worst single sample: 2800 µg/L	24/28	SYR4	2012–2019
Fluoride	380 µg/L 9.5% of the EPA limit 4000 µg/L	5/5	SYR4	2012–2017
Cadmium	2.485 µg/L 50% of the EPA limit 5 µg/L worst single sample: 2.5 µg/L	4/5	SYR4	2012–2017
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	4/4	LCR	2025
Bromodichloromethane	24.75 µg/L No EPA limit set worst single sample: 25 µg/L	2/2	SYR4	2018–2019
Bromoform	5.255 µg/L No EPA limit set worst single sample: 5.3 µg/L	2/2	SYR4	2018–2019
Chloroform	18.6 µg/L No EPA limit set worst single sample: 19 µg/L	2/2	SYR4	2018–2019
Dibromoacetic Acid	7.545 µg/L No EPA limit set worst single sample: 7.6 µg/L	2/2	SYR4	2018–2019
Dibromochloromethane	19 µg/L No EPA limit set	2/2	SYR4	2018–2019
Dichloroacetic Acid	7.4 µg/L No EPA limit set	2/2	SYR4	2018–2019
TTHM	66.4 µg/L 83% of the EPA limit 80 µg/L worst single sample: 67 µg/L	2/2	SYR4	2018–2019
Total Haloacetic Acids (HAA5)	17.95 µg/L 30% of the EPA limit 60 µg/L worst single sample: 18 µg/L	2/2	SYR4	2018–2019
Trichloroacetic Acid	3.085 µg/L No EPA limit set worst single sample: 3.1 µg/L	2/2	SYR4	2018–2019
Nitrate-Nitrite	2400 µg/L 24% of the EPA limit 10000 µg/L	1/2	SYR4	2017
Selenium	11 µg/L 22% of the EPA limit 50 µg/L	1/5	SYR4	2012–2017

37 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicAtrazineBariumBenzeneBeryllium, TotalChlorobenzeneCopperCyanideCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneLassoLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitriteSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MILLER, ROB
Phone: 805-544-4011
Email: robm@wallacegroup.us

Frequently asked questions about Las Ventanas Ranch

Is Las Ventanas Ranch tap water safe to drink?

EPA monitoring detected 15 contaminants in Las Ventanas Ranch'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 Ventanas Ranch's water?

EPA monitoring detected Nitrate, Fluoride, Cadmium, Lead, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Las Ventanas Ranch serve?

Las Ventanas Ranch reports serving 108 people in California, per its EPA record.

Has Las Ventanas Ranch had any water quality violations?

The EPA has no formal drinking-water violations on file for Las Ventanas Ranch.

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.