B79/100
Chula Vista Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 191,282 residents · California
What's In Chula Vista's Tap Water?
76
Contaminants Tested
2
Exceed EPA Limits
0
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.008 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
Full EPA compliance since 2010.
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
SWEETWATER AUTHORITY
Population Served
191,282
Water Source
Surface Water
System ID
CA3710025
Frequently Asked Questions About Chula Vista Water
Is Chula Vista tap water safe to drink?
Chula Vista, California tap water receives a grade of B (79/100), which is considered good. Out of 76 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 Chula Vista's water?
Of the 76 contaminants tested in Chula Vista'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 Chula Vista have any water quality violations?
Yes, Chula Vista has 1 EPA violation(s) on record, with the most recent in 2010. Violation types include MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Chula Vista?
Based on EPA data, using a water filter in Chula Vista 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 Chula Vista's tap water come from?
Chula Vista's drinking water is sourced from surface water and supplied by SWEETWATER AUTHORITY. The system serves approximately 191,282 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Chula Vista'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. Chula Vista'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 Chula Vista's water compare to other cities in California?
Chula Vista's water quality score of 79/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Chula Vista's water quality?
If you have concerns about Chula Vista'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 (SWEETWATER AUTHORITY) 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.