Mayfield Water System, GA
Above the federal action level
Latest 90th-percentile lead: 19.5 ppb (monitoring period 2024-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. In the most recent monitoring period, more than 10% of the sampled homes measured above 15 ppb. Use a filter certified to NSF/ANSI 53 for lead for drinking and cooking now, and test your own tap.
About Mayfield Water System
Mayfield Water System serves about 160 people through 60 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Hancock County, Georgia. EPA system ID: GA1410002; phone on file: 706-444-6288. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 13.8 ppb from 5.7 ppb in the period ending 2026. The highest 90th-percentile result EPA holds for Mayfield Water System is 19.5 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 19.5 ppb over 15 |
| 2026 | 5.7 ppb |
| 2025 | 5.5 ppb |
| 2025 | 3 ppb |
| 2020 | 6.7 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. Mayfield Water System's 19.5 ppb sits at the 99th percentile in Georgia and the 99th nationally (higher means more lead).
Other water systems in Hancock County
6 other systems share Hancock County; 0 of them have a higher latest lead result than Mayfield Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sparta | 2,903 | 0 (not detected) |
| Hancock Co-Ga15e/Devereau Ws | 1,512 | 0 (not detected) |
| Scenic Shores Subdivision | 1,153 | 3.8 ppb |
| Holiday Shores Subdivision | 813 | 6.6 ppb |
| Woodland Valley Subdivision | 694 | 5.1 ppb |
| Island Creek / Glenwood Subdivision | 681 | 9.7 ppb |
Your move
Use a filter certified to NSF/ANSI 53 for lead on the tap you drink and cook from, now, before you test. Then test your own tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Mayfield Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 3100 ppb (copper action level 1,300 ppb).
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.