Wallace Water Company, SC
Lead detected, under the action levels
Latest 90th-percentile lead: 1.6 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. 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 Wallace Water Company
Wallace Water Company serves about 3,552 people through 1,428 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Marlboro County, South Carolina. EPA system ID: SC3420002; phone on file: 843-862-1929. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2023 (1.4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Wallace Water Company is 2.9 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.6 ppb |
| 2023 | 1.4 ppb |
| 2020 | 2.9 ppb |
| 2017 | 2.8 ppb |
Where this result ranks
Of the 553 South Carolina systems with a lead result, the median latest reading is 0.73 ppb; 3 are over 15 ppb right now and 47 have gone over at some point. Wallace Water Company's 1.6 ppb sits at the 64th percentile in South Carolina and the 65th nationally (higher means more lead).
Neighbouring systems
4 other systems share Marlboro County; 2 of them have a higher latest lead result than Wallace Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bennettsville City Of (Sc3410001) | 9,168 | 1 ppb |
| Marlboro Water Co (Sc3420001) | 5,360 | 3.9 ppb |
| Mccoll Town Of (Sc3410003) | 2,445 | 6.2 ppb |
| Clio Town Of (Sc3410002) | 788 | 0.8 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Wallace, SC 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 Wallace Water Company 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. The action level is dropping - the 10 ppb rule from 2027.