B74/100
San Andreas Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 33,922 residents · California
What's In San Andreas's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
2
Above EPA Goals
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 990.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 2Resolved
Exceeded the Maximum Contaminant Level (running average)
When: October 1, 2022 – December 31, 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
CALAVERAS PUD
Population Served
6,286
Water Source
Surface Water
System ID
CA0510002
CCWD - WEST POINT
Population Served
1,043
Water Source
Surface Water
System ID
CA0510005
CCWD - JENNY LIND
Population Served
9,861
Water Source
Surface Water
System ID
CA0510006
CCWD - EBBETTS PASS
Population Served
11,545
Water Source
Surface Water
System ID
CA0510016
CCWD - COPPER COVE
Population Served
5,187
Water Source
Surface Water
System ID
CA0510017
Frequently Asked Questions About San Andreas Water
Is San Andreas tap water safe to drink?
San Andreas, California tap water receives a grade of B (74/100), which is considered good. Out of 80 contaminants tested, 1 exceed EPA maximum contaminant levels (MCLs) and 3 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 San Andreas's water?
Of the 80 contaminants tested in San Andreas's water supply, the most notable include Copper (90th percentile), Lead (90th percentile), chlorate. 1 contaminant(s) exceed EPA legal limits (MCLs). 3 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does San Andreas have any water quality violations?
Yes, San Andreas has 36 EPA violation(s) on record, with the most recent in 2022. Violation types include MCL, MR, TT. 14 of these are health-based violations, which are the most serious category.
Do I need a water filter in San Andreas?
Based on EPA data, using a water filter in San Andreas 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 San Andreas's tap water come from?
San Andreas's drinking water is sourced from surface water and supplied by CALAVERAS PUD and 4 other water system(s). The system serves approximately 33,922 people. Surface water sources include rivers, lakes, and reservoirs.
How often is San Andreas'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. San Andreas'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 San Andreas's water compare to other cities in California?
San Andreas's water quality score of 74/100 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 San Andreas's water quality?
If you have concerns about San Andreas'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 (CALAVERAS PUD) 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.