Joint Muni Wsc (Sc3220003), SC
Lead detected, under the action levels
Latest 90th-percentile lead: 4 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.
About Joint Muni Wsc (Sc3220003)
Joint Muni Wsc (Sc3220003) serves about 54,868 people through 22,124 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 Lexington County, South Carolina. EPA system ID: SC3220003; phone on file: 803-785-3211. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 10 ppb from 14 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Joint Muni Wsc (Sc3220003) is 14 ppb across 5 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2022 | 14 ppb over 10 |
| 2019 | 3 ppb |
| 2016 | 1.4 ppb |
| 2016 | 0 (not detected) |
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. Joint Muni Wsc (Sc3220003)'s 4 ppb sits at the 86th percentile in South Carolina and the 88th nationally (higher means more lead).
Neighbouring systems
68 other systems share Lexington County; 13 of them have a higher latest lead result than Joint Muni Wsc (Sc3220003). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| West Columbia City Of (Sc3210004) | 34,028 | 3 ppb |
| Lexington Town Of (3210001) | 24,284 | 4 ppb |
| Cayce City Of (Sc3210003) | 17,460 | 0 (not detected) |
| Gilbert-Summit Wd (3220001) | 10,400 | 2 ppb |
| Gaston Rural Water Dist (Sc3220002) | 7,550 | 5 ppb |
| Bgwc I-20 (Sc3250012) | 7,435 | 4.7 ppb |
| Batesburg Leesville Dpw (Sc3210002) | 6,814 | 0 (not detected) |
| Amicks Ferry Wtr System (Sc3250077) | 3,937 | 0 (not detected) |
| Swansea Town Of (Sc3210006) | 1,923 | 13 ppb |
| Bgwc Glenn Village Ii (Sc3250058) | 1,430 | 2 ppb |
Next steps for Swansea, SC
Test your own tap with a certified lab first-draw sample; Swansea, 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 Joint Muni Wsc (Sc3220003) 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.