Waterlynn Downs (Sc4660045), SC
Lead detected, under the action levels
Latest 90th-percentile lead: 4 ppb (monitoring period 2022-2024). 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.
Who runs the water here
Waterlynn Downs (Sc4660045) serves about 92 people through 32 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in York County, South Carolina. EPA system ID: SC4660045; phone on file: 803-627-2998. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Waterlynn Downs (Sc4660045)'s lead record
That is up 4 ppb from 0 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Waterlynn Downs (Sc4660045) is 4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 4 ppb |
| 2021 | 0 (not detected) |
| 2018 | 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. Waterlynn Downs (Sc4660045)'s 4 ppb sits at the 84th percentile in South Carolina and the 87th nationally (higher means more lead).
Nearby utilities
61 other systems share York County; 10 of them have a higher latest lead result than Waterlynn Downs (Sc4660045). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Rock Hill City Of (Sc4610002) | 89,850 | 2 ppb |
| York County East Wd (Sc4620002) | 30,225 | 3 ppb |
| Fort Mill Town Of (Sc4610003) | 25,000 | 0 (not detected) |
| York County West Wd (Sc4620003) | 18,273 | 0 (not detected) |
| York City Of (Sc4610001) | 11,137 | 0 (not detected) |
| Tega Cay City Of (Sc4610008) | 10,500 | 0 (not detected) |
| Clover Town Of | 8,400 | 0 (not detected) |
| Riverview Rural Cws (Sc4620001) | 2,200 | 0 (not detected) |
| Hickory Grove Town Of (Sc4610004) | 654 | 2 ppb |
| Bgwc Foxwood (Sc4650008) | 575 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; Lake Wylie, 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 Waterlynn Downs (Sc4660045) 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.