A84/100
ROGINA WATER COMPANY INC. — Water Quality Report 2026
Serving 2,554 people · California
Water Source
Groundwater
County
—
System ID
CA2310002
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 2Unresolved
Treatment technique violation
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 ROGINA WATER COMPANY INC.
Is ROGINA WATER COMPANY INC. water safe to drink?
ROGINA WATER COMPANY INC. water receives a grade of A (84/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ROGINA WATER COMPANY INC. detected?
2 contaminants were tested in ROGINA WATER COMPANY INC.'s water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does ROGINA WATER COMPANY INC. have any EPA violations?
Yes, ROGINA WATER COMPANY INC. has 4 EPA violation(s) on record, with the most recent in 2025. Violation types include RPT, TT, MR. 1 are health-based violations.
How many people does ROGINA WATER COMPANY INC. serve?
ROGINA WATER COMPANY INC. serves approximately 2,554 people, California.
What type of water does ROGINA WATER COMPANY INC. provide?
ROGINA WATER COMPANY INC. sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA2310002.
How does ROGINA WATER COMPANY INC. compare to other utilities in California?
ROGINA WATER COMPANY INC. scores 84/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.