Lake Marion Regional Water Sys (3820003), SC
Lead detected, under the action levels
Latest 90th-percentile lead: 0.47 ppb (monitoring period 2022-2024). 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
Lake Marion Regional Water Sys (3820003) serves about 25 people through 8 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Orangeburg County, South Carolina. EPA system ID: SC3820003; phone on file: 843-731-8000. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2021 (0.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Lake Marion Regional Water Sys (3820003) is 1.43 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0.47 ppb |
| 2021 | 0.3 ppb |
| 2019 | 0.55 ppb |
| 2016 | 1.43 ppb |
Against other South Carolina systems
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. Lake Marion Regional Water Sys (3820003)'s 0.47 ppb sits at the 44th percentile in South Carolina and the 42nd nationally (higher means more lead).
Neighbouring systems
15 other systems share Orangeburg County; 14 of them have a higher latest lead result than Lake Marion Regional Water Sys (3820003). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Orangeburg Dpu (Sc3810001) | 47,463 | 0.66 ppb |
| Silver Springs W/D (Sc3820002) | 2,660 | 0.98 ppb |
| Santee Town Of (Sc3810011) | 2,388 | 0.26 ppb |
| Bull Swamp Rural Water Co | 2,350 | 1.6 ppb |
| Holly Hill Town Of (Sc3810002) | 1,710 | 1.7 ppb |
| Elloree Water System (Sc3810003) | 1,498 | 1.2 ppb |
| North Town Of (Sc3810010) | 1,378 | 5.3 ppb |
| Bowman Town Of (Sc3810004) | 1,274 | 2 ppb |
| Branchville Town Of (3810005) | 1,218 | 0.73 ppb |
| Norway Town Of (3810008) | 843 | 1.5 ppb |
Next steps for Moncks Corner, SC
Test your own tap with a certified lab first-draw sample; Moncks Corner, 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 Lake Marion Regional Water Sys (3820003) 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.