Shiloh Water System (Sc4320005), SC
Exceeded the action level in the past
Latest 90th-percentile lead: 5.7 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. 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.
Who runs the water here
Shiloh Water System (Sc4320005) serves about 645 people through 316 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Sumter County, South Carolina. EPA system ID: SC4320005; phone on file: 803-774-3855. They can tell you what your service line is made of and whether they pay to replace it.
Shiloh Water System (Sc4320005)'s lead record
That is up 4.81 ppb from 0.89 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Shiloh Water System (Sc4320005) is 20 ppb across 9 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5.7 ppb |
| 2023 | 0.89 ppb |
| 2020 | 2.2 ppb |
| 2019 | 6.9 ppb |
| 2018 | 4.3 ppb |
| 2017 | 6.2 ppb |
| 2017 | 20 ppb over 15 |
| 2016 | 12 ppb over 10 |
| 2016 | 0 (not detected) |
How Shiloh Water System (Sc4320005) compares
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. Shiloh Water System (Sc4320005)'s 5.7 ppb sits at the 91st percentile in South Carolina and the 92nd nationally (higher means more lead).
Neighbouring systems
17 other systems share Sumter County; 3 of them have a higher latest lead result than Shiloh Water System (Sc4320005). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sumter City Of (Sc4310001) | 53,070 | 0.79 ppb |
| High Hills | 12,545 | 1.3 ppb |
| Shaw Afb (Sc4310501) | 9,000 | 0.54 ppb |
| Dalzell Water District (Sc4320001) | 3,912 | 2.1 ppb |
| Oswego Rural Water Co (Sc4320006) | 3,282 | 0.23 ppb |
| Sumter Co-Wedgefield-Stateburg Wd | 1,200 | 0.57 ppb |
| Bgwc Oakland Plantation (Sc4350006) | 1,180 | 0.35 ppb |
| Mayesville Town Of (Sc4310003) | 665 | 0.3 ppb |
| Pinewood Town Of (Sc4310002) | 455 | 1.4 ppb |
| Sumter-Wessex S/D (Sc4350016) | 412 | 0.98 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Sumter, 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 Shiloh Water System (Sc4320005) 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Why an old exceedance still matters: over the limit before, under it now.