A87/100
COBB COUNTY — Water Quality Report 2026
Serving 695,000 people · Georgia
Water Source
Purchased Surface Water
County
—
System ID
GA0670003
Violations
3
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 430.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 COBB COUNTY
Is COBB COUNTY water safe to drink?
COBB COUNTY water receives a grade of A (87/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has COBB COUNTY detected?
76 contaminants were tested in COBB COUNTY's water. Notable contaminants include Lead (90th percentile), chlorate. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does COBB COUNTY have any EPA violations?
Yes, COBB COUNTY has 3 EPA violation(s) on record, with the most recent in 2007. Violation types include Other, MR, MCL. 1 are health-based violations.
How many people does COBB COUNTY serve?
COBB COUNTY serves approximately 695,000 people, Georgia.
What type of water does COBB COUNTY provide?
COBB COUNTY sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is GA0670003.
How does COBB COUNTY compare to other utilities in Georgia?
COBB COUNTY scores 87/100 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.