Ar Ranch, SD
Lead detected, under the action levels
Latest 90th-percentile lead: 1 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.
Ar Ranch at a glance
Ar Ranch serves about 88 people through 35 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Meade County, South Dakota. EPA system ID: SD4602379; phone on file: 6057864366. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2024 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ar Ranch is 11 ppb across 3 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2024 | 1 ppb |
| 2023 | 11 ppb over 10 |
How Ar Ranch 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. Ar Ranch's 1 ppb sits at the 17th percentile in South Dakota and the 51st nationally (higher means more lead).
Other water systems in Meade County
41 other systems share Meade County; 22 of them have a higher latest lead result than Ar Ranch. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sturgis | 7,020 | 2 ppb |
| Black Hawk Water User District | 4,500 | 2 ppb |
| Piedmont | 971 | 3 ppb |
| Bear Butte Valley Water | 882 | 1 ppb |
| Fort Meade Va Center | 800 | 8 ppb |
| Wonderland Homes | 750 | 2 ppb |
| Sun Valley Development | 650 | 6 ppb |
| Weston Heights Homeowners Associatio | 412 | 7 ppb |
| Faith | 367 | 1 ppb |
| Blucksberg Mountain #2 | 333 | 9 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Blackhawk, 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 Ar Ranch 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.