{"query":{"parameter":"sum of the concentration of 25 per and polyfluoroalkyl substances pfas","place":"CA-SK","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-SK","CA"],"parameter_keys":["name:sum of the concentration of 25 per- and polyfluoroalkyl substances"],"names_matched":[["sum of the concentration of 25 per and polyfluoroalkyl substances pfas","name:sum of the concentration of 25 per- and polyfluoroalkyl substances"]],"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":"0ca8771ba4d8c398","parameter":"sum of the concentration of 25 per- and polyfluoroalkyl substances (PFAS)","value":"30","value_num":30,"unit":"ng/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","sum_of":{"members":["PFBA","PFNA","PFPeS","6:2 FTS","PFMBA","PFPeA","PFDA","PFHxS","8:2 FTS","NFDHA","PFHxA","PFUnA","PFHpS","HFPO-DA","9Cl-PF3ONS","PFHpA","PFDoA","PFOS","ADONA","11Cl-PF3OUdS","PFOA","PFBS","4:2 FTS","PFMPA","PFEESA"],"says":"This limit binds the sum of the 25 substances the instrument lists (members, as printed), not any one of them alone."},"parameter_key":"name:sum of the concentration of 25 per- and polyfluoroalkyl substances","place":["CA"],"conditions":[],"cite":{"instrument":"ca_hc_pfas","title":"Health Canada, Objective for Canadian drinking water quality — per- and polyfluoroalkyl substances (published 2024-08-09)","issuer":"Health Canada","edition":"Objective value","source_url":"https://www.canada.ca/en/health-canada/services/publications/healthy-living/objective-drinking-water-quality-per-polyfluoroalkyl-substances.html","source_sha256":"32a42a0d382cdd90729dd9750f47889782bd00d4af8dfd34f2b9aaf6f2678c6c","fetched_at":"2026-09-24","section":"Objective value","page":null,"quote":"an objective of 30 ng/L is established for the sum of the concentration of 25 per- and polyfluoroalkyl substances (PFAS) detected in drinking water","column":"valeur"}}],"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-SK"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"sum of the concentration of 25 per and polyfluoroalkyl substances pfas\", 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-SK"},"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"}]}