Sand Mountain Mhp (Sc3260183), SC
Exceeded the action level in the past
Latest 90th-percentile lead: 8 ppb (monitoring period 2024-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Sand Mountain Mhp (Sc3260183) at a glance
Sand Mountain Mhp (Sc3260183) serves about 40 people through 20 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lexington County, South Carolina. EPA system ID: SC3260183; phone on file: 803-556-9691. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 2 ppb from 10 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Sand Mountain Mhp (Sc3260183) is 22 ppb across 10 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 8 ppb |
| 2023 | 10 ppb |
| 2022 | 12 ppb over 10 |
| 2021 | 10 ppb |
| 2021 | 6 ppb |
| 2020 | 22 ppb over 15 |
| 2019 | 11 ppb over 10 |
| 2019 | 11 ppb over 10 |
| 2017 | 4.8 ppb |
| 2016 | 10 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. Sand Mountain Mhp (Sc3260183)'s 8 ppb sits at the 95th percentile in South Carolina and the 96th nationally (higher means more lead).
Neighbouring systems
68 other systems share Lexington County; 3 of them have a higher latest lead result than Sand Mountain Mhp (Sc3260183). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Joint Muni Wsc (Sc3220003) | 54,868 | 4 ppb |
| 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 |
Next steps for Chapin, SC
Test your own tap with a certified lab first-draw sample; Chapin, 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 Sand Mountain Mhp (Sc3260183) 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. Why an old exceedance still matters: over the limit before, under it now.