Miller, SD
Exceeded the action level in the past
Latest 90th-percentile lead: 5 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Miller at a glance
Miller serves about 1,349 people through 856 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Hand County, South Dakota. EPA system ID: SD4600211; phone on file: 6058532705. They can tell you what your service line is made of and whether they pay to replace it.
Miller's lead record
That is down 8 ppb from 13 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Miller is 16 ppb across 6 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 5 ppb |
| 2020 | 13 ppb over 10 |
| 2019 | 12 ppb over 10 |
| 2018 | 10 ppb |
| 2018 | 8 ppb |
| 2017 | 16 ppb over 15 |
Against other South Dakota systems
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. Miller's 5 ppb sits at the 91st percentile in South Dakota and the 91st nationally (higher means more lead).
Other water systems in Hand County
1 other system shares Hand County; 0 of them have a higher latest lead result than Miller. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Saint Lawrence | 198 | 5 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Miller, 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 Miller 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Why an old exceedance still matters: over the limit before, under it now.