A94/100
DEKALB COUNTY — Water Quality Report 2026
Serving 743,000 people · Georgia
Water Source
Surface Water
County
—
System ID
GA0890001
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – February 16, 2022Enforcement: 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 DEKALB COUNTY
Is DEKALB COUNTY water safe to drink?
DEKALB COUNTY water receives a grade of A (94/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has DEKALB COUNTY detected?
76 contaminants were tested in DEKALB COUNTY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does DEKALB COUNTY have any EPA violations?
Yes, DEKALB COUNTY has 3 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MR.
How many people does DEKALB COUNTY serve?
DEKALB COUNTY serves approximately 743,000 people, Georgia.
What type of water does DEKALB COUNTY provide?
DEKALB COUNTY sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is GA0890001.
How does DEKALB COUNTY compare to other utilities in Georgia?
DEKALB COUNTY scores 94/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Georgia state page for a full comparison of water systems.