B77/100
Castaic Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 7,000 residents · California
What's In Castaic's Tap Water?
31
Contaminants Tested
2
Exceed EPA Limits
0
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.005 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2008.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
PETER PITCHESS HONOR RANCHO DETN. CTR
Population Served
7,000
Water Source
Groundwater
System ID
CA1900046
Frequently Asked Questions About Castaic Water
Is Castaic tap water safe to drink?
Castaic, California tap water receives a grade of B (77/100), which is considered good. Out of 31 contaminants tested, 2 exceed EPA maximum contaminant levels (MCLs) and 2 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Castaic's water?
Of the 31 contaminants tested in Castaic's water supply, the most notable include PFOS, PFOA. 2 contaminant(s) exceed EPA legal limits (MCLs). 2 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Castaic have any water quality violations?
Yes, Castaic has 7 EPA violation(s) on record, with the most recent in 2008. Violation types include MR, Other. None of these are classified as health-based violations.
Do I need a water filter in Castaic?
Based on EPA data, using a water filter in Castaic is recommended. 2 contaminant(s) exceed legal limits. An NSF-certified filter — such as a reverse osmosis or activated carbon system — can effectively reduce many common contaminants. Choose a filter certified to remove the specific contaminants found in your area.
Where does Castaic's tap water come from?
Castaic's drinking water is sourced from groundwater and supplied by PETER PITCHESS HONOR RANCHO DETN. CTR. The system serves approximately 7,000 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Castaic's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Castaic's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Castaic's water compare to other cities in California?
Castaic's water quality score of 77/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Castaic's water quality?
If you have concerns about Castaic's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (PETER PITCHESS HONOR RANCHO DETN. CTR) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.