Cobb County, GA
No lead results on file with EPA
Latest 90th-percentile lead: no result on file. The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. EPA's database has no Lead and Copper Rule results for this system. Without them there is nothing to go on, so a tap test is the only way to know.
About Cobb County
Cobb County serves about 695,000 people through 183,518 service connections, which makes it a very large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Cobb County, Georgia. EPA system ID: GA0670003; phone on file: 770-528-3300. They can tell you what your service line is made of and whether they pay to replace it.
Nearby utilities
4 other systems share Cobb County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Marietta Board Of Lights And Water | 60,100 | - |
| Smyrna | 40,508 | - |
| Austell | 7,774 | - |
| Cobb Co.-Marietta Water Auth. | - | 2.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Marietta, GA may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Cobb County whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.