Darlington City Of (Sc1610001), SC
Lead detected, under the action levels
Latest 90th-percentile lead: 0.37 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.
About Darlington City Of (Sc1610001)
Darlington City Of (Sc1610001) serves about 7,142 people through 3,122 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Darlington County, South Carolina. EPA system ID: SC1610001; phone on file: 843-398-4040. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2023 (0.23 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Darlington City Of (Sc1610001) is 1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.37 ppb |
| 2023 | 0.23 ppb |
| 2020 | 1 ppb |
| 2017 | 0.81 ppb |
How Darlington City Of (Sc1610001) 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. Darlington City Of (Sc1610001)'s 0.37 ppb sits at the 43rd percentile in South Carolina and the 42nd nationally (higher means more lead).
Other water systems in Darlington County
3 other systems share Darlington County; 3 of them have a higher latest lead result than Darlington City Of (Sc1610001). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Darlington County W&Sa (Sc1620001) | 52,288 | 2.3 ppb |
| Hartsville City Of (Sc1610003) | 8,711 | 1.8 ppb |
| Lamar Town Of (Sc1610004) | 1,034 | 0.38 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Darlington, 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 Darlington City Of (Sc1610001) 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.