Two Bit Ranch Estates, SD
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (monitoring period 2025-2025). 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 Two Bit Ranch Estates
Two Bit Ranch Estates serves about 30 people through 12 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lawrence County, South Dakota. EPA system ID: SD4602319. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
Against the period ending 2022 (4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Two Bit Ranch Estates is 4 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3 ppb |
| 2022 | 4 ppb |
How Two Bit Ranch Estates compares
Of the 458 South Dakota systems with a lead result, the median latest reading is 2 ppb; 0 are over 15 ppb right now and 6 have gone over at some point. Two Bit Ranch Estates's 3 ppb sits at the 73rd percentile in South Dakota and the 81st nationally (higher means more lead).
Nearby utilities
41 other systems share Lawrence County; 5 of them have a higher latest lead result than Two Bit Ranch Estates. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Spearfish | 13,803 | 3 ppb |
| Lead | 2,982 | 1 ppb |
| Deadwood | 1,156 | 2 ppb |
| Whitewood | 879 | 1 ppb |
| Terry Trojan Water District | 400 | 4 ppb |
| Mountain Plains 2 Homeowners Assoc | 268 | 1 ppb |
| Saint Onge Sewer & Water Co | 255 | 2 ppb |
| Boulder Park Water Users Association | 200 | 1 ppb |
| Rendezvous Ranch | 195 | 1 ppb |
| Lantern Estates | 192 | 3 ppb |
Next steps for Spearfish, SD
Test your own tap with a certified lab first-draw sample; Spearfish, 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 Two Bit Ranch 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. Size matters more than most people expect: small vs large water systems.