C55/100
Julian Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 36,315 residents · California
What's In Julian's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: September 1, 2022 – September 30, 2022Rule: Total Coliform RuleEnforcement: 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
CUYAMACA WATER DISTRICT
Population Served
33,030
Water Source
Groundwater
System ID
CA3700074
JULIAN COMMUNITY SERVICES DISTRICT
Population Served
1,517
Water Source
Groundwater
System ID
CA3700909
MAJESTIC PINES COMMUNITY SD
Population Served
1,768
Water Source
Groundwater
System ID
CA3710041
Frequently Asked Questions About Julian Water
Is Julian tap water safe to drink?
Julian, California tap water receives a grade of C (55/100), which is considered fair. 1 contaminant(s) exceed EPA maximum contaminant levels and 115 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Julian's water?
Of the 2 contaminants tested in Julian'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 Julian have any water quality violations?
Yes, Julian has 115 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, RPT, Other. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Julian?
Based on EPA data, using a water filter in Julian 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 Julian's tap water come from?
Julian's drinking water is sourced from groundwater and supplied by CUYAMACA WATER DISTRICT and 2 other water system(s). The system serves approximately 36,315 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Julian'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. Julian'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 Julian's water compare to other cities in California?
Julian's water quality score of 55/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Julian's water quality?
If you have concerns about Julian'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 (CUYAMACA WATER DISTRICT) 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.