Letcher, SD
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2023-2023). 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 Letcher
Letcher serves about 159 people through 105 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Sanborn County, South Dakota. EPA system ID: SD4600196; phone on file: 6052482242. They can tell you what your service line is made of and whether they pay to replace it.
Letcher's lead record
That is down 2 ppb from 3 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Letcher is 3 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1 ppb |
| 2020 | 3 ppb |
| 2017 | 3 ppb |
How Letcher 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. Letcher's 1 ppb sits at the 23rd percentile in South Dakota and the 52nd nationally (higher means more lead).
Other water systems in Sanborn County
2 other systems share Sanborn County; 1 of them has a higher latest lead result than Letcher. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Woonsocket | 618 | 13 ppb |
| Upland Colony | 198 | 0 (not detected) |
Next steps for Letcher, SD
Test your own tap with a certified lab first-draw sample; Letcher, 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 Letcher 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. Systems that went over once often dip back under; here is what that means.