Shaw Afb (Sc4310501), SC
Lead detected, under the action levels
Latest 90th-percentile lead: 0.54 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.
Shaw Afb (Sc4310501) at a glance
Shaw Afb (Sc4310501) serves about 9,000 people through 982 service connections, which makes it a medium-sized system under EPA's size classes. It is federally owned and draws groundwater, in Sumter County, South Carolina. EPA system ID: SC4310501; phone on file: 803-895-9978. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2023 (0.21 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Shaw Afb (Sc4310501) is 1.3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.54 ppb |
| 2023 | 0.21 ppb |
| 2020 | 0.37 ppb |
| 2017 | 1.3 ppb |
How Shaw Afb (Sc4310501) 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. Shaw Afb (Sc4310501)'s 0.54 ppb sits at the 46th percentile in South Carolina and the 44th nationally (higher means more lead).
Nearby utilities
17 other systems share Sumter County; 13 of them have a higher latest lead result than Shaw Afb (Sc4310501). 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 |
| 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 |
| Shiloh Water System (Sc4320005) | 645 | 5.7 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; Shaw Afb, 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 Shaw Afb (Sc4310501) 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. Size matters more than most people expect: small vs large water systems.