A80/100
RIO COSUMNES CORRECTIONAL CENTER [SWS] — Water Quality Report 2026
Serving 2,800 people · California
Water Source
Groundwater
County
—
System ID
CA3400229
Violations
9
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 2Unresolved
Treatment technique violation
TIER 3Unresolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
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 RIO COSUMNES CORRECTIONAL CENTER [SWS]
Is RIO COSUMNES CORRECTIONAL CENTER [SWS] water safe to drink?
RIO COSUMNES CORRECTIONAL CENTER [SWS] water receives a grade of A (80/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has RIO COSUMNES CORRECTIONAL CENTER [SWS] detected?
1 contaminants were tested in RIO COSUMNES CORRECTIONAL CENTER [SWS]'s water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does RIO COSUMNES CORRECTIONAL CENTER [SWS] have any EPA violations?
Yes, RIO COSUMNES CORRECTIONAL CENTER [SWS] has 9 EPA violation(s) on record, with the most recent in 2024. Violation types include TT, RPT, MR. 2 are health-based violations.
How many people does RIO COSUMNES CORRECTIONAL CENTER [SWS] serve?
RIO COSUMNES CORRECTIONAL CENTER [SWS] serves approximately 2,800 people, California.
What type of water does RIO COSUMNES CORRECTIONAL CENTER [SWS] provide?
RIO COSUMNES CORRECTIONAL CENTER [SWS] sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3400229.
How does RIO COSUMNES CORRECTIONAL CENTER [SWS] compare to other utilities in California?
RIO COSUMNES CORRECTIONAL CENTER [SWS] scores 80/100 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.