Cumming, GA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). 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
Cumming serves about 58,661 people through 20,732 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 Forsyth County, Georgia. EPA system ID: GA1170000; phone on file: 770-781-2020. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.5 ppb from 1.5 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Cumming is 1.5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 1.5 ppb |
| 2017 | 0 (not detected) |
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. Cumming'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.
Nearby utilities
7 other systems share Forsyth County; 4 of them have a higher latest lead result than Cumming. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Forsyth Co. Water & Sewer | 161,200 | 1 ppb |
| Shady Shores Subdivision | 1,632 | 0 (not detected) |
| Colonial Club Estates | 416 | 0.6 ppb |
| Deerwood Water Systems, Inc. | 405 | 1.1 ppb |
| Lanier Woods Subdivision | 182 | 0.7 ppb |
| Beaver Ruin Subdivision | 105 | 0 (not detected) |
| Wood Creek Subdivision | 95 | 0 (not detected) |
What to do in your house
Look up your address in Cumming'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 Cumming 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. A zero today does not rule out a jump later - the rules are tightening in 2027.