A83/100
Rancho Murieta Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,728 residents · California
What's In Rancho Murieta's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – July 31, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
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
RANCHO MURIETA COMMUNITY SERVI
Population Served
5,728
Water Source
Surface Water
System ID
CA3410005
Frequently Asked Questions About Rancho Murieta Water
Is Rancho Murieta tap water safe to drink?
Rancho Murieta, California tap water receives a grade of A (83/100), which is considered excellent. Out of 31 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Rancho Murieta's water?
31 contaminants were tested in Rancho Murieta's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Rancho Murieta have any water quality violations?
Yes, Rancho Murieta has 5 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MCL, Other. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Rancho Murieta?
Rancho Murieta water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Rancho Murieta's tap water come from?
Rancho Murieta's drinking water is sourced from surface water and supplied by RANCHO MURIETA COMMUNITY SERVI. The system serves approximately 5,728 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Rancho Murieta'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. Rancho Murieta'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 Rancho Murieta's water compare to other cities in California?
Rancho Murieta's water quality score of 83/100 earns a grade of A, which is considered excellent. This places Rancho Murieta 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 Rancho Murieta's water quality?
If you have concerns about Rancho Murieta'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 (RANCHO MURIETA COMMUNITY SERVI) 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.