A89/100
Lake Arrowhead Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 7,038 residents · California
What's In Lake Arrowhead'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 |
|---|---|---|---|
PFOA | 0.011 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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
LAKE ARROWHEAD CSD
Population Served
7,038
Water Source
Surface Water
System ID
CA3610005
Frequently Asked Questions About Lake Arrowhead Water
Is Lake Arrowhead tap water safe to drink?
Lake Arrowhead, California tap water receives a grade of A (89/100), which is considered excellent. 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 Lake Arrowhead's water?
Of the 31 contaminants tested in Lake Arrowhead's water supply, the most notable include PFOA, PFOS. 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 Lake Arrowhead have any water quality violations?
No, Lake Arrowhead has zero EPA violations on record. This means the water utility has consistently met all federal drinking water standards during the compliance periods tracked by the EPA.
Do I need a water filter in Lake Arrowhead?
Based on EPA data, using a water filter in Lake Arrowhead 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 Lake Arrowhead's tap water come from?
Lake Arrowhead's drinking water is sourced from surface water and supplied by LAKE ARROWHEAD CSD. The system serves approximately 7,038 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Lake Arrowhead'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. Lake Arrowhead'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 Lake Arrowhead's water compare to other cities in California?
Lake Arrowhead's water quality score of 89/100 earns a grade of A, which is considered excellent. This places Lake Arrowhead among the better-performing water systems in California. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Lake Arrowhead's water quality?
If you have concerns about Lake Arrowhead'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 (LAKE ARROWHEAD CSD) 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.