{"query":{"parameter":"total dissolved solids","place":"CA-NL","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-NL","CA"],"parameter_keys":["name:tds","name:total dissolved solids"],"names_matched":[["total dissolved solids","name:tds"],["total dissolved solids","name:total dissolved solids"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":2,"offset":0,"returned":2,"next_offset":null,"rows":[{"id":"c85eea8e9ae1624c","parameter":"Solids (dissolved)","value":"1000 (see note)","value_num":1000,"unit":"mg/L","direction":"max","kind":"limit","medium":"water_discharge","level":"regional","route":"direct","parameter_key":"name:total dissolved solids","place":["CA-NL"],"conditions":["route is direct","receiving_water in freshwater, marine","unless the minister determines the discharger is primarily in the Metal Mining, Pulp and Paper or Petroleum Refining Industry (s. 10.1: Schedules C, D and E instead)"],"cite":{"instrument":"ca_nl_ecwsr_2003","title":"Environmental Control Water and Sewage Regulations, 2003 (Newfoundland and Labrador Regulation 65/03) — Schedules A and B","issuer":"Government of Newfoundland and Labrador, Department of Environment","edition":"consolidated NLR 65/03 as amended by NLR 23/09 (House of Assembly page, fetched 2026-10-08)","source_url":"https://www.assembly.nl.ca/Legislation/sr/regulations/rc030065.htm","source_sha256":"d123fbabd5ae08a96eeca616f91303dc64915a4464951b87b9bc8a41719fcb9f","fetched_at":"2026-10-08","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Schedule A (s. 6(a)): discharge into a body of water","page":null,"quote":"Solids (dissolved) 1000 (see note)"}},{"id":"3ca5f1dcc344afda","parameter":"Total dissolved solids (TDS)","value":"≤ 500","value_num":500,"unit":"mg/L","direction":"max","kind":"objective","medium":"drinking_water","level":"national","parameter_key":"name:total dissolved solids","place":["CA"],"conditions":["drinking water (a guideline, not a regulation: each province and territory decides whether, and how, it binds there)"],"cite":{"instrument":"ca_hc_gcdwq","title":"Health Canada — Guidelines for Canadian Drinking Water Quality, Summary Tables 1-3 (microbiological, chemical and physical, radiological)","issuer":"Health Canada, with the Federal-Provincial-Territorial Committee on Drinking Water","edition":"page modified 2026-01-21 (dcterms.modified; issued 2014-10-22): Tables 1-3 as the browser pane rendered them on 2026-10-15","source_url":"https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/water-quality/guidelines-canadian-drinking-water-quality-summary-table.html","source_sha256":"9451ad8bfa566c0625ae4fcb362272cbb0e20040c548540f362488118c300b89","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"Table 2, Chemical and Physical Parameters (Total dissolved solids (TDS), published or reaffirmed 2025)","page":null,"quote":"A Total dissolved solids (TDS) (2025) (In: Operational parameters) None AO: ≤ 500"}}],"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-NL"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"total dissolved solids\", 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-NL"},"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"}]}