{"query":{"parameter":"tritium","place":"US-SD","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-SD","US"],"parameter_keys":["cas:10028-17-8","name:tritium"],"names_matched":[["tritium","cas:10028-17-8"],["tritium","name:tritium"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":1,"offset":0,"returned":1,"next_offset":null,"rows":[{"id":"ec9ef4679b921cf2","parameter":"Tritium (dissolved)","value":"tritium, 300 pCi/L","value_num":300,"unit":"pCi/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:tritium","place":["US-SD"],"conditions":["receiving_water is freshwater","all surface waters of the state"],"cite":{"instrument":"us_sd_wqs","title":"South Dakota Surface Water Quality Standards (ARSD 74:51:01): criteria by beneficial use, Appendix B toxic pollutant criteria, radionuclide and dissolved gas limits","issuer":"State of South Dakota, Water Management Board (Department of Agriculture and Natural Resources)","edition":"ARSD chapter 74:51:01, Surface Water Quality, effective August 17, 2023 (49 SDR 96, May 14, 2023 the latest amendment printed), as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/sd-wqs.pdf","source_sha256":"84e4cd1bcfc7954e7393230459ee9d98f7b9c39e0b29724e6b897bdb73f4ddcc","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"ARSD 74:51:01:14","page":11,"quote":"The average dissolved concentrations including the naturally occurring or background concentrations of iodine-131, radium-226, strontium-89, strontium-90, and tritium may not exceed the following concentration limits: iodine-131, 5 pCi/L; radium-226, 5 pCi/L; strontium-89, 100 pCi/L; strontium-90, 10 pCi/L; and tritium, 300 pCi/L."}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-SD"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"tritium\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-SD"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}