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F0/100

ST. MARYS — Water Quality Report 2026

Serving 19,408 people · Georgia

Water Source
Groundwater
County
—
System ID
GA0390001
Violations
98

Contaminant Test Results

3 contaminants above EPA health goals
ContaminantDetectedLimit (MCL)Status
Copper (90th percentile)
154.00 mg/L1.30 mg/LOver Limit
chlorate
4430.00 µg/L—Above Goal
Lead (90th percentile)
0.001 mg/L0.015 mg/LAbove Goal

EPA Violation History

9

Violations (last 5yr)

5

Unresolved

0

Health-Related

TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: September 7, 2023Rule: Ground Water RuleVerify on EPA.gov
TIER 3Resolved

Surface water treatment technique failure

When: July 1, 2023 – August 17, 2023Enforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: August 5, 2022Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Failed to conduct Level 1 Assessment

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: July 29, 2022 – September 19, 2022Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: July 27, 2022Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved

Surface water treatment technique failure

When: July 1, 2021Enforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: June 1, 2021 – June 30, 2021Rule: Total Coliform RuleEnforcement: 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: May 1, 2021 – May 31, 2021Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: April 18, 2021Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov

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. MARYS

Is ST. MARYS water safe to drink?

ST. MARYS water receives a grade of F (0/100), which is considered failing. 1 contaminant(s) exceed EPA legal limits and 98 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has ST. MARYS detected?

67 contaminants were tested in ST. MARYS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile), chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).

Does ST. MARYS have any EPA violations?

Yes, ST. MARYS has 98 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR, MON. 8 are health-based violations.

How many people does ST. MARYS serve?

ST. MARYS serves approximately 19,408 people, Georgia.

What type of water does ST. MARYS provide?

ST. MARYS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is GA0390001.

How does ST. MARYS compare to other utilities in Georgia?

ST. MARYS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Georgia state page for a full comparison of water systems.