A91/100
Lompoc Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 51,381 residents · California
What's In Lompoc's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2009.
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
LOMPOC-CITY WATER UTILITY DIV
Population Served
40,473
Water Source
Surface Water
System ID
CA4210006
VANDENBERG VILLAGE COMM. SERV. DIST.
Population Served
7,308
Water Source
Groundwater
System ID
CA4210017
MISSION HILLS CSD
Population Served
3,600
Water Source
Groundwater
System ID
CA4210019
Frequently Asked Questions About Lompoc Water
Is Lompoc tap water safe to drink?
Lompoc, California tap water receives a grade of A (91/100), which is considered excellent. Out of 70 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 Lompoc's water?
Of the 70 contaminants tested in Lompoc's water supply, the most notable include Copper (90th percentile). 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 Lompoc have any water quality violations?
Yes, Lompoc has 7 EPA violation(s) on record, with the most recent in 2017. Violation types include MON, MR, TT. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Lompoc?
Based on EPA data, using a water filter in Lompoc 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 Lompoc's tap water come from?
Lompoc's drinking water is sourced from surface water and supplied by LOMPOC-CITY WATER UTILITY DIV and 2 other water system(s). The system serves approximately 51,381 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Lompoc'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. Lompoc'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 Lompoc's water compare to other cities in California?
Lompoc's water quality score of 91/100 earns a grade of A, which is considered excellent. This places Lompoc 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 Lompoc's water quality?
If you have concerns about Lompoc'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 (LOMPOC-CITY WATER UTILITY DIV) 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.