What South Dakota publishes about lead testing in its schools’ drinking water, what those numbers cover, and how we checked it. One row of a 51-jurisdiction survey, verified jurisdiction by jurisdiction rather than compiled from a single list.
South DakotaPublishes nothing (confirmed at source)
Published action level, as verified in 2026: 15 ppb
Action levels are not comparable between jurisdictions: across the 51 we surveyed they run from 1 ppb to 20 ppb, so a share of results above “the action level” measures the threshold as much as it measures the water. We never rank states on it. Where a jurisdiction explains how its own level was set, the verified research note at the foot of this page records the explanation verbatim.
We found no school lead testing results published by South Dakota. That is confirmed at source: we checked the jurisdiction's own pages or data platform and found no results in them.
An absence of published results is a fact about disclosure, not about water. It says nothing about whether schools here have been tested, and nothing about what a test would find.
The baseline is the National Association of State Boards of Education’s 2021 survey. Every 2026 value below was re-checked for this survey; a value that did not move is a finding too.
Changed since the 2021 baseline: action level, publishes results.
Our field note for South Dakota, published verbatim rather than summarised. Where it quotes a figure from a source, that is the source’s own number reproduced as we recorded it, not a rate we computed — everything we compute states its denominator and its unit.
⚠️ CORRECTED on direct test: the 120Water portal EPA still lists for South Dakota is DECOMMISSIONED -- southdakota.120wateraudit.com returns HTTP 303 redirecting to the vendor's marketing homepage (www.120wateraudit.com), serving no state data at all. Kansas, West Virginia and Virginia run the same platform and all resolve normally, so this is South Dakota's tenant being gone rather than a platform outage. Also demonstrates that EPA's contacts index is not perfectly current and its URLs must be tested, not trusted.
TapWaterData Editorial. "School drinking water lead testing: South Dakota." TapWaterData national school drinking-water lead testing database. Last updated 2026-08-09. Licensed under CC BY 4.0. https://www.tapwaterdata.com/school-lead-testing/south-dakota
@misc{tapwaterdata_school_lead_2026,
author = {TapWaterData Editorial},
title = {School drinking water lead testing: South Dakota},
year = {2026},
howpublished = {\url{https://www.tapwaterdata.com/school-lead-testing/south-dakota}},
note = {Last updated 2026-08-09. Licensed under CC BY 4.0}
}Published under a Creative Commons Attribution 4.0 (CC BY 4.0) licence — free to republish, chart or build on with attribution. Last updated .
All 51 jurisdictions — the national scorecard, the tier map, and the methodology behind every rating on this page.
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