A86/100
Loma Linda Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 40,497 residents · California
What's In Loma Linda's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2022 – September 30, 2022Rule: Revised Total Coliform RuleEnforcement: Resolving — corrective action underway
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
LOMA LINDA UNIVERSITY
Population Served
15,368
Water Source
Groundwater
System ID
CA3600152
LOMA LINDA, CITY OF
Population Served
25,129
Water Source
Groundwater
System ID
CA3610013
Frequently Asked Questions About Loma Linda Water
Is Loma Linda tap water safe to drink?
Loma Linda, California tap water receives a grade of A (86/100), which is considered excellent. Out of 66 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 1 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 Loma Linda's water?
Of the 66 contaminants tested in Loma Linda's water supply, the most notable include PFOS. 1 contaminant(s) exceed EPA legal limits (MCLs). 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Loma Linda have any water quality violations?
Yes, Loma Linda has 8 EPA violation(s) on record, with the most recent in 2022. Violation types include MR, MCL, Other. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Loma Linda?
Based on EPA data, using a water filter in Loma Linda is recommended. 1 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 Loma Linda's tap water come from?
Loma Linda's drinking water is sourced from groundwater and supplied by LOMA LINDA UNIVERSITY and 1 other water system(s). The system serves approximately 40,497 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Loma Linda'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. Loma Linda'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 Loma Linda's water compare to other cities in California?
Loma Linda's water quality score of 86/100 earns a grade of A, which is considered excellent. This places Loma Linda 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 Loma Linda's water quality?
If you have concerns about Loma Linda'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 (LOMA LINDA UNIVERSITY) 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.