Dunham Marsh, GA
Lead detected, under the action levels
Latest 90th-percentile lead: 2.6 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
Dunham Marsh serves about 429 people through 373 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Bryan County, Georgia. EPA system ID: GA0290096; phone on file: 912-352-9339. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Dunham Marsh's lead record
That is up 1.3 ppb from 1.3 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Dunham Marsh is 2.6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 2.6 ppb |
| 2022 | 1.3 ppb |
| 2019 | 0 (not detected) |
| 2016 | 2.5 ppb |
How Dunham Marsh 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. Dunham Marsh's 2.6 ppb sits at the 81st percentile in Georgia and the 78th nationally (higher means more lead).
Other water systems in Bryan County
43 other systems share Bryan County; 8 of them have a higher latest lead result than Dunham Marsh. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Richmond Hill | 16,068 | 1.1 ppb |
| South Atlantic Utilities-Bryan County(S) | 3,553 | 1 ppb |
| Pembroke Water System | 3,402 | 7.3 ppb |
| Henderson Park | 2,962 | 0 (not detected) |
| Strathy Hall Subdivision | 1,185 | 1.2 ppb |
| Bryan County Water System | 1,111 | 0 (not detected) |
| Cranston Bluff-Waterford Landing | 975 | 2.1 ppb |
| Oak Level Road Water System | 932 | 0 (not detected) |
| Cape Hardwicke/Ft. Mcallister/Kinsale/Re | 861 | 0 (not detected) |
| Magnolia Creek Plantation/Tayor Place | 589 | 8.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Savannah, 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 Dunham Marsh 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. Systems that went over once often dip back under; here is what that means.