- EPA's UCMR 5 testing looked for 30 contaminants here and found 3.
Public EPA test results
What EPA records show for Cobb County
EPA GA0670003 · serves Cobb County, GA · about 695,000 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Cobb County (EPA GA0670003)
What EPA records show for Cobb County, as of October 14, 2026
We found no health-based violations in EPA's records for this system (GA0670003) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Cobb County (SDWIS). Data as of October 14, 2026.
This system buys water from Cobb Co.-Marietta Water Auth. (GA0670002); see that system's records.
Source: Cobb Co.-Marietta Water Auth. (GA0670002) report. Data as of October 14, 2026.
EPA's UCMR 5 testing looked for 30 contaminants here and found 3.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Cobb County use chloramine?
We didn't find chloramine in Cobb County's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)