A90/100
ST JOHN WATER DISTRICT 3 — Water Quality Report 2026
Serving 31,965 people · Louisiana
Water Source
Groundwater
County
—
System ID
LA1095007
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 ST JOHN WATER DISTRICT 3
Is ST JOHN WATER DISTRICT 3 water safe to drink?
ST JOHN WATER DISTRICT 3 water receives a grade of A (90/100), which is considered excellent. Out of 51 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ST JOHN WATER DISTRICT 3 detected?
51 contaminants were tested in ST JOHN WATER DISTRICT 3's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does ST JOHN WATER DISTRICT 3 have any EPA violations?
Yes, ST JOHN WATER DISTRICT 3 has 3 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does ST JOHN WATER DISTRICT 3 serve?
ST JOHN WATER DISTRICT 3 serves approximately 31,965 people, Louisiana.
What type of water does ST JOHN WATER DISTRICT 3 provide?
ST JOHN WATER DISTRICT 3 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is LA1095007.
How does ST JOHN WATER DISTRICT 3 compare to other utilities in Louisiana?
ST JOHN WATER DISTRICT 3 scores 90/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Louisiana state page for a full comparison of water systems.