{"query":{"parameter":"dissolved oxygen","place":"CA-BC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-BC","CA"],"parameter_keys":["cas:7782-44-7","name:dissolved oxygen","name:diel dissolved oxygen flux","name:minimum dissolved oxygen","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","name:oxygen - dissolved","name:oxygen, dissolved"],"names_matched":[["dissolved oxygen","cas:7782-44-7"],["dissolved oxygen","name:dissolved oxygen"],["diel dissolved oxygen flux","name:diel dissolved oxygen flux"],["minimum dissolved oxygen","name:minimum dissolved oxygen"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","oxygen dissolved"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc h","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","oxygen dissolved"],["oxygen dissolved","name:oxygen - dissolved","oxygen dissolved"],["oxygen dissolved","name:oxygen, dissolved","oxygen dissolved"],["oxygen dissolved intergravel","name:oxygen, dissolved","oxygen dissolved"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean water"},"total":8,"offset":0,"returned":8,"next_offset":null,"rows":[{"id":"911280b99760bb05","parameter":"Oxygen (dissolved)","value":"5","value_num":5,"unit":"mg/L","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-44-7","place":["CA-BC"],"conditions":["receiving_water is freshwater","All life stages other than buried embryo/alevin."],"cite":{"instrument":"ca_bc_wqg_aquatic","title":"B.C. 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(all_wqgs.csv), dataset modified 2026-08-20; the same guidelines as the ministry's Guideline Summary PDF, whose host www2.gov.bc.ca refused this machine on 2026-10-09","source_url":"https://catalogue.data.gov.bc.ca/dataset/85d3990a-ec0a-4436-8ebd-150de3ba0747/resource/6f32a85b-a3d9-44c3-9a14-15175eba25b6/download/all_wqgs.csv","source_sha256":"1673409ad5c17fa364589bb20f830055bc21d6e765a40681f06b510f6614f26a","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Aquatic Life - Freshwater · Short-term acute · Approved (UniqueID 384)","page":null,"quote":"384,Oxygen,Dissolved,EMS_DO_F,(7782-44-7),Aquatic Life - Freshwater,Water,Short-term acute,1,1,min,,,,All life stages other than buried embryo/alevin.,No Effect,Lower Limit,5,,mg/L"}},{"id":"76262827f45a10dc","parameter":"Oxygen (dissolved)","value":"9","value_num":9,"unit":"mg/L","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-44-7","place":["CA-BC"],"conditions":["receiving_water is freshwater","Buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch.  Water column concentrations recommended to achieve interstitial DO values when the latter are unavailable.  Interstitial oxygen measurements supersede water column data."],"cite":{"instrument":"ca_bc_wqg_aquatic","title":"B.C. Approved Water Quality Guidelines: Aquatic Life — freshwater, marine and estuarine, short-term acute and long-term chronic","issuer":"Government of British Columbia, Ministry of Environment and Parks (Water Protection and Sustainability Branch)","edition":"BC Data Catalogue 'Water Quality Guidelines of B.C.' 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Interstitial oxygen measurements supersede water column data.,No Effect,Lower Limit,9,,mg/L"}},{"id":"25789712c8c8a8ef","parameter":"Oxygen (dissolved)","value":"6","value_num":6,"unit":"mg/L","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-44-7","place":["CA-BC"],"conditions":["receiving_water is freshwater","Interstitial DO concentrations for buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch."],"cite":{"instrument":"ca_bc_wqg_aquatic","title":"B.C. Approved Water Quality Guidelines: Aquatic Life — freshwater, marine and estuarine, short-term acute and long-term chronic","issuer":"Government of British Columbia, Ministry of Environment and Parks (Water Protection and Sustainability Branch)","edition":"BC Data Catalogue 'Water Quality Guidelines of B.C.' (all_wqgs.csv), dataset modified 2026-08-20; the same guidelines as the ministry's Guideline Summary PDF, whose host www2.gov.bc.ca refused this machine on 2026-10-09","source_url":"https://catalogue.data.gov.bc.ca/dataset/85d3990a-ec0a-4436-8ebd-150de3ba0747/resource/6f32a85b-a3d9-44c3-9a14-15175eba25b6/download/all_wqgs.csv","source_sha256":"1673409ad5c17fa364589bb20f830055bc21d6e765a40681f06b510f6614f26a","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Aquatic Life - Freshwater · Short-term acute · Approved (UniqueID 386)","page":null,"quote":"386,Oxygen,Dissolved,EMS_DO_F,(7782-44-7),Aquatic Life - Freshwater,Water,Short-term acute,1,1,min,,,,Interstitial DO concentrations for buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch.,No Effect,Lower Limit,6,,mg/L"}},{"id":"89c821ea73010fb1","parameter":"Oxygen (dissolved)","value":"8","value_num":8,"unit":"mg/L","statistic":"monthly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-44-7","place":["CA-BC"],"conditions":["receiving_water is freshwater"],"cite":{"instrument":"ca_bc_wqg_aquatic","title":"B.C. 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(all_wqgs.csv), dataset modified 2026-08-20; the same guidelines as the ministry's Guideline Summary PDF, whose host www2.gov.bc.ca refused this machine on 2026-10-09","source_url":"https://catalogue.data.gov.bc.ca/dataset/85d3990a-ec0a-4436-8ebd-150de3ba0747/resource/6f32a85b-a3d9-44c3-9a14-15175eba25b6/download/all_wqgs.csv","source_sha256":"1673409ad5c17fa364589bb20f830055bc21d6e765a40681f06b510f6614f26a","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 387)","page":null,"quote":"387,Oxygen,Dissolved,EMS_DO_F,(7782-44-7),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,,,,,No Effect,Lower Limit,8,,mg/L"}},{"id":"9f6d0a2678539c79","parameter":"Oxygen (dissolved)","value":"11","value_num":11,"unit":"mg/L","statistic":"monthly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-44-7","place":["CA-BC"],"conditions":["receiving_water is freshwater","Buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch.  Water column concentrations recommended to achieve interstitial DO values when the latter are unavailable.  Interstitial oxygen measurements supersede water column data."],"cite":{"instrument":"ca_bc_wqg_aquatic","title":"B.C. Approved Water Quality Guidelines: Aquatic Life — freshwater, marine and estuarine, short-term acute and long-term chronic","issuer":"Government of British Columbia, Ministry of Environment and Parks (Water Protection and Sustainability Branch)","edition":"BC Data Catalogue 'Water Quality Guidelines of B.C.' (all_wqgs.csv), dataset modified 2026-08-20; the same guidelines as the ministry's Guideline Summary PDF, whose host www2.gov.bc.ca refused this machine on 2026-10-09","source_url":"https://catalogue.data.gov.bc.ca/dataset/85d3990a-ec0a-4436-8ebd-150de3ba0747/resource/6f32a85b-a3d9-44c3-9a14-15175eba25b6/download/all_wqgs.csv","source_sha256":"1673409ad5c17fa364589bb20f830055bc21d6e765a40681f06b510f6614f26a","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 388)","page":null,"quote":"388,Oxygen,Dissolved,EMS_DO_F,(7782-44-7),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,,,,Buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch. Water column concentrations recommended to achieve interstitial DO values when the latter are unavailable. Interstitial oxygen measurements supersede water column data.,No Effect,Lower Limit,11,,mg/L"}},{"id":"0ddc4dac689b1716","parameter":"Oxygen (dissolved)","value":"8","value_num":8,"unit":"mg/L","statistic":"monthly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7782-44-7","place":["CA-BC"],"conditions":["receiving_water is freshwater","Interstitial DO concentrations for buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch."],"cite":{"instrument":"ca_bc_wqg_aquatic","title":"B.C. Approved Water Quality Guidelines: Aquatic Life — freshwater, marine and estuarine, short-term acute and long-term chronic","issuer":"Government of British Columbia, Ministry of Environment and Parks (Water Protection and Sustainability Branch)","edition":"BC Data Catalogue 'Water Quality Guidelines of B.C.' (all_wqgs.csv), dataset modified 2026-08-20; the same guidelines as the ministry's Guideline Summary PDF, whose host www2.gov.bc.ca refused this machine on 2026-10-09","source_url":"https://catalogue.data.gov.bc.ca/dataset/85d3990a-ec0a-4436-8ebd-150de3ba0747/resource/6f32a85b-a3d9-44c3-9a14-15175eba25b6/download/all_wqgs.csv","source_sha256":"1673409ad5c17fa364589bb20f830055bc21d6e765a40681f06b510f6614f26a","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 389)","page":null,"quote":"389,Oxygen,Dissolved,EMS_DO_F,(7782-44-7),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,,,,Interstitial DO concentrations for buried embryo/alevin life stages; instream concentrations from spawning to the point of yolk sax absorption or 30 days post hatch.,No Effect,Lower Limit,8,,mg/L"}},{"id":"30a929176f5ed9d8","parameter":"Dissolved oxygen","value":"Variable","unit":"µg/L","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"name:dissolved oxygen","place":["CA"],"conditions":["receiving_water is freshwater","long-term exposure: CCME's long-term guideline"],"cite":{"instrument":"ca_ccme_wqg_aquatic","title":"CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life — freshwater and marine, short and long term","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary Table (as served 2026-09-24; each guideline carries its own year)","source_url":"https://ccme.ca/en/results/176,177,178,1,2,287,3,4,5,6,7,179,8,174,9,10,12,180,14,181,182,183,15,16,17,300,19,20,21,289,242,23,24,295,27,28,194,288,59,60,61,63,62,184,65,66,67,69,70,71,72,73,74,80,81,216,291,30,31,32,41,47,42,48,113,114,169,171,170,185,110,83,77,78,283,79,109,104,52,53,290,85,76,86,100,87,88,89,234,91,154,93,94,96,99,186,187,97,102,112,292,40,119,125,293,121,188,122,123,124,126,127,129,131,239,233,189,135,130,133,136,137,138,107,29,297,103,51,235,190,139,140,141,143,144,146,147,148,39,58,284,161,302,303,162,191,294,163,164,165,167,168,172,173,175,101,192,193,196,197,198,199,201,217,202,203,204,207,218,208,209,115,36,37,38,45,299,106,56,57,211,212,213,214,215,221,222,108,151,236,33,34,35,43,44,298,55,105,54,152,223,153,219,225,226,296,229/ch/1,2,3,4/csv","source_sha256":"f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"eau_vie_aquatique","column":"douce_long_terme"}},{"id":"b30a87c1c7fdca6a","parameter":"Dissolved oxygen","value":">8000 & Narrative","unit":"µg/L","direction":"min","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"name:dissolved oxygen","place":["CA"],"conditions":["receiving_water is marine","long-term exposure: CCME's long-term guideline"],"cite":{"instrument":"ca_ccme_wqg_aquatic","title":"CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life — freshwater and marine, short and long term","issuer":"Canadian Council of Ministers of the Environment (CCME)","edition":"Summary Table (as served 2026-09-24; each guideline carries its own year)","source_url":"https://ccme.ca/en/results/176,177,178,1,2,287,3,4,5,6,7,179,8,174,9,10,12,180,14,181,182,183,15,16,17,300,19,20,21,289,242,23,24,295,27,28,194,288,59,60,61,63,62,184,65,66,67,69,70,71,72,73,74,80,81,216,291,30,31,32,41,47,42,48,113,114,169,171,170,185,110,83,77,78,283,79,109,104,52,53,290,85,76,86,100,87,88,89,234,91,154,93,94,96,99,186,187,97,102,112,292,40,119,125,293,121,188,122,123,124,126,127,129,131,239,233,189,135,130,133,136,137,138,107,29,297,103,51,235,190,139,140,141,143,144,146,147,148,39,58,284,161,302,303,162,191,294,163,164,165,167,168,172,173,175,101,192,193,196,197,198,199,201,217,202,203,204,207,218,208,209,115,36,37,38,45,299,106,56,57,211,212,213,214,215,221,222,108,151,236,33,34,35,43,44,298,55,105,54,152,223,153,219,225,226,296,229/ch/1,2,3,4/csv","source_sha256":"f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499","fetched_at":"2026-09-24","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"eau_vie_aquatique","column":"marine_long_terme"}}],"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: \"dissolved oxygen\", 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"}]}