Thomson-Mcduffie Co W&S Comm, GA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.1 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.
About Thomson-Mcduffie Co W&S Comm
Thomson-Mcduffie Co W&S Comm serves about 21,312 people through 7,455 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 Mcduffie County, Georgia. EPA system ID: GA1890001; phone on file: 706-699-6262. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 1.2 ppb from 0.9 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Thomson-Mcduffie Co W&S Comm is 2.8 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.1 ppb |
| 2022 | 0.9 ppb |
| 2019 | 2.8 ppb |
| 2018 | 1.3 ppb |
Against other Georgia systems
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. Thomson-Mcduffie Co W&S Comm's 2.1 ppb sits at the 76th percentile in Georgia and the 74th nationally (higher means more lead).
Your move
Test your own tap with a certified lab first-draw sample; Thomson, 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 Thomson-Mcduffie Co W&S Comm 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.