B79/100
SAN ANTONIO MDWCA — Water Quality Report 2026
Serving 1,344 people · New Mexico
Water Source
Groundwater
County
—
System ID
NM3573928
Violations
14
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – January 31, 2025Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – January 31, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: June 24, 2021 – November 1, 2023Rule: 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
Frequently Asked Questions About SAN ANTONIO MDWCA
Is SAN ANTONIO MDWCA water safe to drink?
SAN ANTONIO MDWCA water receives a grade of B (79/100), which is considered good. 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 SAN ANTONIO MDWCA detected?
1 contaminants were tested in SAN ANTONIO MDWCA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SAN ANTONIO MDWCA have any EPA violations?
Yes, SAN ANTONIO MDWCA has 14 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, Other. 1 are health-based violations.
How many people does SAN ANTONIO MDWCA serve?
SAN ANTONIO MDWCA serves approximately 1,344 people, New Mexico. The system provides water to 1 community: San Antonio.
What type of water does SAN ANTONIO MDWCA provide?
SAN ANTONIO MDWCA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NM3573928.
How does SAN ANTONIO MDWCA compare to other utilities in New Mexico?
SAN ANTONIO MDWCA scores 79/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our New Mexico state page for a full comparison of water systems.