Heron'S Walk Phase 1 (Sc1850017), SC
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Heron'S Walk Phase 1 (Sc1850017) serves about 231 people through 86 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Dorchester County, South Carolina. EPA system ID: SC1850017; phone on file: 843-832-0075. They can tell you what your service line is made of and whether they pay to replace it.
Heron'S Walk Phase 1 (Sc1850017)'s lead record
Against the period ending 2025 (0.48 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Heron'S Walk Phase 1 (Sc1850017) is 0.48 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0.48 ppb |
| 2025 | 0 (not detected) |
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. Heron'S Walk Phase 1 (Sc1850017)'s reported as 0 (not detected) sits at the 17th percentile in South Carolina and the 16th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Dorchester County
19 other systems share Dorchester County; 17 of them have a higher latest lead result than Heron'S Walk Phase 1 (Sc1850017). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Summerville Cpw (Sc1810003) | 81,750 | 0.3 ppb |
| Dcwa Knightsville (Sc1820001) | 40,141 | 0.35 ppb |
| Dcws Ashley Phosphate (Sc1820008) | 26,536 | 0.5 ppb |
| St George Town Of (Sc1810001) | 2,300 | 3 ppb |
| Dcws/Clay Field Drive (Sc1850014) | 1,648 | 0.55 ppb |
| Lieber Correctional Institute (1870050) | 1,646 | 4.7 ppb |
| Dcws Southern Palms (Sc1850011) | 1,494 | 0.71 ppb |
| Ridgeville Industrial Campus (Sc1830031) | 999 | 2 ppb |
| Harleyville Town Of (Sc1810002) | 946 | 0 (not detected) |
| Dcws Edisto Tribal Council (1850010) | 925 | 1.5 ppb |
What to do in your house
Look up your address in Heron'S Walk Phase 1 (Sc1850017)'s service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Heron'S Walk Phase 1 (Sc1850017) 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.