{"query":{"parameter":"calcium","place":"CA-BC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-BC","CA"],"parameter_keys":["cas:7440-70-2","cas:75975-85-8","cas:90194-36-8","cas:68953-96-8","cas:70024-69-0","cas:13701-64-9","name:calcium-45","name:calcium-47","cas:65997-16-2","cas:592-01-8","cas:26264-06-2","cas:1305-62-0","cas:7778-54-3","cas:7789-82-4","cas:1305-78-8","cas:1344-95-2","cas:1319-33-1","name:total alkalinity as calcium carbonate"],"names_matched":[["calcium","cas:7440-70-2"],["benzene polypropene derivs sulfonated calcium salts","cas:75975-85-8"],["benzenesulfonic acid c10 13 alkyl derivs calcium salt","cas:90194-36-8"],["benzenesulfonic acid mono c11 13 branched alkyl derivs calcium salts","cas:68953-96-8"],["benzenesulfonic acid mono c16 24 alkyl derivs calcium salts","cas:70024-69-0"],["boric acid hbo2 calcium salt","cas:13701-64-9"],["c11 c13 branched alkylbenzenesulfonic acid calcium salt","cas:68953-96-8"],["calcium 45","name:calcium-45"],["calcium 47","name:calcium-47"],["calcium aluminate cement","cas:65997-16-2"],["calcium cyanide","cas:592-01-8"],["calcium cyanide ca cn 2","cas:592-01-8"],["calcium dodecylbenzenesulfonate","cas:26264-06-2"],["calcium hydroxide","cas:1305-62-0"],["calcium hydroxyde de","cas:1305-62-0"],["calcium hypochlorite","cas:7778-54-3"],["calcium metaboratea","cas:13701-64-9"],["calcium molybdate","cas:7789-82-4"],["calcium oxide","cas:1305-78-8"],["calcium silicate","cas:1344-95-2"],["calcium silicate de synthetique","cas:1344-95-2"],["dodecylbenzensulfonate de calcium","cas:26264-06-2"],["hypochlorite de calcium","cas:7778-54-3"],["molybdate moo42 calcium 1 1 t 4","cas:7789-82-4"],["sodium calcium pentaborate octahydrate","cas:1319-33-1"],["total alkalinity as calcium carbonate","name:total alkalinity as calcium carbonate"]],"match":"exact+contains","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":"72e3a0490f326a13","parameter":"calcium","value":"1 000 mg/L","value_num":1000,"unit":"mg/L","direction":"max","kind":"limit","medium":"groundwater","level":"regional","parameter_key":"cas:7440-70-2","place":["CA-BC"],"conditions":["Livestock (LW)"],"cite":{"instrument":"ca_bc_csr_water_uses","title":"B.C. Reg. 375/96 Contaminated Sites Regulation — Schedule 3.2 generic numerical water standards, drinking water, irrigation and livestock","issuer":"Government of British Columbia (Environmental Management Act)","edition":"This consolidation is current to September 15, 2026.","source_url":"https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/375_96_00","source_sha256":"f69b12b38ce71f5bad4842242a2390be2eeeef94ac7fcc116d57c4e34d6ffc21","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":4,"quote":null,"table":"schedule_3_2","column":"LW"}}],"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":"CA-BC"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"calcium\", 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":"CA-BC"},"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"}]}