Darlington Estates, SD
No lead results on file with EPA
Latest 90th-percentile lead: no result on file. The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. EPA's database has no Lead and Copper Rule results for this system. Without them there is nothing to go on, so a tap test is the only way to know.
About Darlington Estates
Darlington Estates serves about 25 people through 15 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Pennington County, South Dakota. EPA system ID: SD4600403. Ask the utility on your bill for your address in their service line inventory.
Nearby utilities
64 other systems share Pennington County. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Rapid City | 72,009 | 6 ppb |
| Box Elder | 14,000 | 2 ppb |
| Rapid Valley Sanitary District | 11,408 | 3 ppb |
| Ellsworth Afb | 9,100 | 1 ppb |
| Colonial Pine Hills Sanitary Distric | 1,200 | 1 ppb |
| Chapel Lane Water Company | 1,200 | 2 ppb |
| Hill City | 872 | 1 ppb |
| Wall | 699 | 1 ppb |
| New Underwood | 679 | 1 ppb |
| Hisega Meadows Water Inc | 493 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Rapid City, SD 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 Estates 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. Systems that went over once often dip back under; here is what that means.