Sun Valley Development, SD
Lead detected, under the action levels
Latest 90th-percentile lead: 6 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.
Sun Valley Development at a glance
Sun Valley Development serves about 650 people through 260 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in Meade County, South Dakota. EPA system ID: SD4602270. Ask the utility on your bill for your address in their service line inventory.
Sun Valley Development's lead record
That is up 4 ppb from 2 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Sun Valley Development is 6 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 6 ppb |
| 2022 | 2 ppb |
| 2019 | 1 ppb |
| 2016 | 3 ppb |
Where this result ranks
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. Sun Valley Development's 6 ppb sits at the 94th percentile in South Dakota and the 93rd nationally (higher means more lead).
Nearby utilities
41 other systems share Meade County; 4 of them have a higher latest lead result than Sun Valley Development. 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 |
| Weston Heights Homeowners Associatio | 412 | 7 ppb |
| Faith | 367 | 1 ppb |
| Blucksberg Mountain #2 | 333 | 9 ppb |
| Stagebarn Sanitary District | 295 | 1 ppb |
Next steps for Rapid City, SD
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 Sun Valley Development 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. The action level is dropping - the 10 ppb rule from 2027.