A88/100
Lakeside Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 36,671 residents · California
What's In Lakeside's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – March 31, 2024Rule: Stage 2 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: April 1, 2022 – June 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
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
Barona North
Population Served
1,171
Water Source
Groundwater
System ID
090600118
LAKESIDE WD
Population Served
35,500
Water Source
Purchased Surface Water
System ID
CA3710013
Frequently Asked Questions About Lakeside Water
Is Lakeside tap water safe to drink?
Lakeside, California tap water receives a grade of A (88/100), which is considered excellent. Out of 70 contaminants tested, 1 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 Lakeside's water?
Of the 70 contaminants tested in Lakeside's water supply, the most notable include Copper (90th percentile), Lead (90th percentile). 1 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 Lakeside have any water quality violations?
Yes, Lakeside has 13 EPA violation(s) on record, with the most recent in 2024. Violation types include RPT, MR, MON. None of these are classified as health-based violations.
Do I need a water filter in Lakeside?
Based on EPA data, using a water filter in Lakeside 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 Lakeside's tap water come from?
Lakeside's drinking water is sourced from groundwater and supplied by Barona North and 1 other water system(s). The system serves approximately 36,671 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Lakeside'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. Lakeside'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 Lakeside's water compare to other cities in California?
Lakeside's water quality score of 88/100 earns a grade of A, which is considered excellent. This places Lakeside 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 Lakeside's water quality?
If you have concerns about Lakeside'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 (Barona North) 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.