Coweta Water & Sewer Auth., GA
Lead detected, under the action levels
Latest 90th-percentile lead: 3.9 ppb (monitoring period 2023-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Who runs the water here
Coweta Water & Sewer Auth. serves about 92,907 people through 58,075 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Coweta County, Georgia. EPA system ID: GA0770042; phone on file: 770-254-3710. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is up 1.5 ppb from 2.4 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Coweta Water & Sewer Auth. is 3.9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.9 ppb |
| 2022 | 2.4 ppb |
| 2019 | 3.8 ppb |
| 2016 | 1.8 ppb |
Where this result ranks
Of the 1,681 Georgia systems with a lead result, the median latest reading is 0.68 ppb; 15 are over 15 ppb right now and 131 have gone over at some point. Coweta Water & Sewer Auth.'s 3.9 ppb sits at the 88th percentile in Georgia and the 87th nationally (higher means more lead).
Neighbouring systems
12 other systems share Coweta County; 0 of them have a higher latest lead result than Coweta Water & Sewer Auth.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Newnan Utilities | 48,451 | 1.3 ppb |
| Senoia | 7,528 | 1.1 ppb |
| Grantville | 3,221 | 0 (not detected) |
| Turin | 671 | 0 (not detected) |
| South Oaks Mobile Home Park | 471 | 2.7 ppb |
| The Gates Subdivision | 369 | 0 (not detected) |
| Pine Hill Est/Hearthstone Subdivision | 341 | 0 (not detected) |
| Sweetbriar Mobile Home Park | 270 | 0 (not detected) |
| Meadowview Subdivision | 146 | 1.34 ppb |
| Wedgewood Estates Subdivision | 120 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Newnan, 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 Coweta Water & Sewer Auth. 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.