Question 1

Is Castaic tap water safe to drink?

Accepted Answer

Castaic's water has 2 contaminants detected above EPA limits. While the water is treated, residents may want to consider additional filtration.

Question 2

What contaminants are in Castaic tap water?

Accepted Answer

4 contaminants have been detected in Castaic's water supply across 2 water systems. See the full contaminant table above for details.

Question 3

How can I improve my water quality in Castaic?

Accepted Answer

Install a water filter rated for the specific contaminants found in Castaic's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.

Question 4

Does Castaic have any water quality violations?

Accepted Answer

Yes, Castaic currently has 13 active violations. See the violations section above for details.

Contaminant	Detected Level	EPA Limit (MCL)	Health Guideline	% of Limit	Status
lithium	46.1	No federal limit	10.0 ug/L(EPA/USGS HBSL)	461%	Above guideline
PFHxS	0.003	0.010 ug/L	0.001 ug/L(EWG)	31%	Within limit
PFOA	0.005	0.004 ug/L	0.090 ug/L(EWG)	125%	Above limit
PFOS	0.006	0.004 ug/L	0.300 ug/L(EWG)	163%	Above limit

Castaic, California Water Quality Report

Water Source

Detected Contaminants

Recommended Water Filters

Reverse Osmosis (RO)

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Compliance & Violations

Active Violations (13)

Resolved Violations (67)

Frequently Asked Questions