B65/100
MARIANA RANCHOS CWD — Water Quality Report 2026
Serving 1,502 people · California
Water Source
Groundwater
County
—
System ID
CA3610030
Violations
11
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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
Frequently Asked Questions About MARIANA RANCHOS CWD
Is MARIANA RANCHOS CWD water safe to drink?
MARIANA RANCHOS CWD water receives a grade of B (65/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has MARIANA RANCHOS CWD detected?
1 contaminants were tested in MARIANA RANCHOS CWD's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does MARIANA RANCHOS CWD have any EPA violations?
Yes, MARIANA RANCHOS CWD has 11 EPA violation(s) on record, with the most recent in 2015. Violation types include MCL, MR, Other. 6 are health-based violations.
How many people does MARIANA RANCHOS CWD serve?
MARIANA RANCHOS CWD serves approximately 1,502 people, California.
What type of water does MARIANA RANCHOS CWD provide?
MARIANA RANCHOS CWD sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3610030.
How does MARIANA RANCHOS CWD compare to other utilities in California?
MARIANA RANCHOS CWD scores 65/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our California state page for a full comparison of water systems.