Gwinnett Co. Dept. Of Water Resources, GA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Gwinnett Co. Dept. Of Water Resources serves about 975,000 people through 260,400 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 Gwinnett County, Georgia. EPA system ID: GA1350004; phone on file: 678-376-6715. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gwinnett Co. Dept. Of Water Resources is 1.2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 1.2 ppb |
| 2017 | 1.1 ppb |
How Gwinnett Co. Dept. Of Water Resources compares
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. Gwinnett Co. Dept. Of Water Resources's reported as 0 (not detected) sits at the 45th percentile in Georgia and the 40th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Gwinnett County
2 other systems share Gwinnett County; 1 of them has a higher latest lead result than Gwinnett Co. Dept. Of Water Resources. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Buford | 8,482 | 0 (not detected) |
| Jones Mobile Home Park | 800 | 4 ppb |
What to do in your house
Look up your address in Gwinnett Co. Dept. Of Water Resources's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Gwinnett Co. Dept. Of Water Resources 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. Small systems behave differently: why small systems go over more often.