{"query":{"parameter":"ph","place":"CA-BC","medium":null,"statistic":null,"kind":null},"searched":{"places":["CA-BC","CA"],"parameter_keys":["name:ph","cas:68953-84-4","cas:7429-90-5","cas:56-38-2","name:ph change","name:ph-wert","cas:68951-93-9","cas:68952-93-2","cas:68957-04-0","cas:68037-81-0","cas:63148-58-3"],"names_matched":[["ph","name:ph"],["1 4 benzenediamine n n mixed ph and tolyl derivs","cas:68953-84-4"],["aluminum dissolved ph 6 5 9 0 only","cas:7429-90-5"],["aluminum dissolved ph 6 5 to 9 0 only","cas:7429-90-5"],["parathion pentachlorophenol e 1 005 ph 4 869","cas:56-38-2"],["ph change","name:ph change"],["ph change ph","name:ph change"],["ph wert","name:ph-wert"],["polysiloxanes di me di ph hydroxy terminated","cas:68951-93-9"],["siloxanes and silicones di me di ph hydroxy terminated","cas:68951-93-9"],["siloxanes and silicones di me me methoxy methoxy ph polymers with me ph silsesquioxanes","cas:68952-93-2"],["siloxanes and silicones di me methoxy ph polymers with ph silsesquioxanes methoxy terminated","cas:68957-04-0"],["siloxanes and silicones di me methoxy ph polymers with ph silsesquioxanes methoxy terminateda","cas:68957-04-0"],["siloxanes and silicones di ph me ph polymers with me ph silsesquioxanes","cas:68037-81-0"],["siloxanes and silicones me ph","cas:63148-58-3"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order","not_sent":{"rows":51,"names":["Aluminum (total)","aluminum","parathion","Aluminum","Aluminium"],"says":"51 rows share a parameter key with a longer name holding \"ph\" but are printed under names without these words (that key is wider than the name): not sent. Ask for one by its name or CAS number."}},"total":24,"offset":0,"returned":24,"next_offset":null,"rows":[{"id":"382e0baddc2c61ca","parameter":"pH","value":"6 − 9","range":[6,9],"unit":"pH units","direction":"range","kind":"limit","medium":"water_discharge","level":"regional","route":"direct","stream":"sanitary","parameter_key":"name:ph","place":["CA-BC"],"conditions":["stream is sanitary","route is direct","receiving_water in freshwater, marine","a stream, river or estuary at a dilution ratio ≥ 40:1 (Column A)","maximum daily flow > 50 m3/d (Table 11)","daily flows < 2 × ADWF"],"cite":{"instrument":"ca_bc_mwr","title":"Municipal Wastewater Regulation (B.C. Reg. 87/2012) — s. 94 Tables 9-11 municipal effluent quality, s. 96 fecal coliforms, s. 97 phosphorus","issuer":"Government of British Columbia (Environmental Management Act)","edition":"BC Laws consolidation current to October 6, 2026 (am. B.C. Reg. 50/2024)","source_url":"https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/87_2012","source_sha256":"0fef8d2da18bd3698cb11c2b2d7296ff1c22405b93cc7128c52c6111d49e49a6","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"s. 94, Table 11, Column A","page":null,"quote":"daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9"}},{"id":"ac03cff2f6b7cf17","parameter":"pH","value":"6 − 9","range":[6,9],"unit":"pH units","direction":"range","kind":"limit","medium":"water_discharge","level":"regional","route":"direct","stream":"sanitary","parameter_key":"name:ph","place":["CA-BC"],"conditions":["stream is sanitary","route is direct","receiving_water in freshwater, marine","a stream, river or estuary at a dilution ratio ≥ 10:1 (Column B)","maximum daily flow > 50 m3/d (Table 11)","daily flows < 2 × ADWF"],"cite":{"instrument":"ca_bc_mwr","title":"Municipal Wastewater Regulation (B.C. Reg. 87/2012) — s. 94 Tables 9-11 municipal effluent quality, s. 96 fecal coliforms, s. 97 phosphorus","issuer":"Government of British Columbia (Environmental Management Act)","edition":"BC Laws consolidation current to October 6, 2026 (am. B.C. Reg. 50/2024)","source_url":"https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/87_2012","source_sha256":"0fef8d2da18bd3698cb11c2b2d7296ff1c22405b93cc7128c52c6111d49e49a6","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"s. 94, Table 11, Column B","page":null,"quote":"daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9"}},{"id":"fab33dcf3370058f","parameter":"pH","value":"6 − 9","range":[6,9],"unit":"pH units","direction":"range","kind":"limit","medium":"water_discharge","level":"regional","route":"direct","stream":"sanitary","parameter_key":"name:ph","place":["CA-BC"],"conditions":["stream is sanitary","route is direct","receiving_water is freshwater","a lake with a surface area ≥ 100 ha (Column C)","maximum daily flow > 50 m3/d (Table 11)","daily flows < 2 × ADWF"],"cite":{"instrument":"ca_bc_mwr","title":"Municipal Wastewater Regulation (B.C. Reg. 87/2012) — s. 94 Tables 9-11 municipal effluent quality, s. 96 fecal coliforms, s. 97 phosphorus","issuer":"Government of British Columbia (Environmental Management Act)","edition":"BC Laws consolidation current to October 6, 2026 (am. B.C. Reg. 50/2024)","source_url":"https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/87_2012","source_sha256":"0fef8d2da18bd3698cb11c2b2d7296ff1c22405b93cc7128c52c6111d49e49a6","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"s. 94, Table 11, Column C","page":null,"quote":"daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9"}},{"id":"403fe6d89335fb31","parameter":"pH","value":"6 − 9","range":[6,9],"unit":"pH units","direction":"range","kind":"limit","medium":"water_discharge","level":"regional","route":"direct","stream":"sanitary","parameter_key":"name:ph","place":["CA-BC"],"conditions":["stream is sanitary","route is direct","receiving_water is marine","open marine waters (Column D)","maximum daily flow > 50 m3/d (Table 11)","daily flows < 2 × ADWF"],"cite":{"instrument":"ca_bc_mwr","title":"Municipal Wastewater Regulation (B.C. Reg. 87/2012) — s. 94 Tables 9-11 municipal effluent quality, s. 96 fecal coliforms, s. 97 phosphorus","issuer":"Government of British Columbia (Environmental Management Act)","edition":"BC Laws consolidation current to October 6, 2026 (am. B.C. Reg. 50/2024)","source_url":"https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/87_2012","source_sha256":"0fef8d2da18bd3698cb11c2b2d7296ff1c22405b93cc7128c52c6111d49e49a6","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"s. 94, Table 11, Column D","page":null,"quote":"daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9"}},{"id":"6c654e944f6cc6a9","parameter":"pH","value":"6 − 9","range":[6,9],"unit":"pH units","direction":"range","kind":"limit","medium":"water_discharge","level":"regional","route":"direct","stream":"sanitary","parameter_key":"name:ph","place":["CA-BC"],"conditions":["stream is sanitary","route is direct","receiving_water is marine","embayed marine waters (Column E)","maximum daily flow > 50 m3/d (Table 11)","daily flows < 2 × ADWF"],"cite":{"instrument":"ca_bc_mwr","title":"Municipal Wastewater Regulation (B.C. Reg. 87/2012) — s. 94 Tables 9-11 municipal effluent quality, s. 96 fecal coliforms, s. 97 phosphorus","issuer":"Government of British Columbia (Environmental Management Act)","edition":"BC Laws consolidation current to October 6, 2026 (am. B.C. Reg. 50/2024)","source_url":"https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/87_2012","source_sha256":"0fef8d2da18bd3698cb11c2b2d7296ff1c22405b93cc7128c52c6111d49e49a6","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"s. 94, Table 11, Column E","page":null,"quote":"daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9"}},{"id":"4aac74877688b6a4","parameter":"pH (total)","value":"No statistically significant decrease in pH from background when pH is less than 6.5.  No restriction on the increase in pH except in boggy areas that have a unique fauna or flora.  Site-specific ambient water quality objectives to restrict the pH increase in areas with a unique fauna and flora are recommended.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is freshwater","condition as printed: EMS_0004 < 6.5; EMS_0004 = pH"],"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 649)","page":null,"quote":"649,pH,Total,EMS_0004,(NA),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,No statistically significant decrease in pH from background when pH is less than 6.5. No restriction on the increase in pH except in boggy areas that have a unique fauna or flora. Site-specific ambient water quality objectives to restrict the pH increase in areas with a unique fauna and flora are recommended.,,EMS_0004 < 6.5,,No Effect,,,,"}},{"id":"c59b4fbf0da17fae","parameter":"pH (total)","value":"Unrestricted change permitted within a pH range of 6.5 to 9.  The component of the freshwater WQGs should be used cautiously if the pH change causes the carbon dioxide concentrations to exceed a 10 umol/L minimum or a 1360 umol/L short-term.  Carbon dioxide concentrations below 10 umol/L can cause a shift in the phytoplankton community to cyanobacteria, while carbon dioxide concentrations above 1360 umol/L can be toxic to fish.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is freshwater","condition as printed: EMS_0004 >= 6.5 & EMS_0004 <= 9; EMS_0004 = pH"],"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 650)","page":null,"quote":"650,pH,Total,EMS_0004,(NA),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,\"Unrestricted change permitted within a pH range of 6.5 to 9. The component of the freshwater WQGs should be used cautiously if the pH change causes the carbon dioxide concentrations to exceed a 10 umol/L minimum or a 1360 umol/L short-term. Carbon dioxide concentrations below 10 umol/L can cause a shift in the phytoplankton community to cyanobacteria, while carbon dioxide concentrations above 1360 umol/L can be toxic to fish.\",,EMS_0004 >= 6.5 & EMS_0004 <= 9,,No Effect,,,,"}},{"id":"02494715b8970c5a","parameter":"pH (total)","value":"No statistically significant increase in pH from background when pH is above 9.  Short-term increases (2-3 days) to pH 9.5 are permitted for lake restoration projects.  Decreases in pH are permittes as long as carbon dioxide concentrations are not elevated above 1360 umol/L.  Carbon dioxide concentrations above 1360 umol/L may be toxic to fish.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is freshwater","condition as printed: EMS_0004 > 9.0; EMS_0004 = pH"],"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 651)","page":null,"quote":"651,pH,Total,EMS_0004,(NA),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,No statistically significant increase in pH from background when pH is above 9. Short-term increases (2-3 days) to pH 9.5 are permitted for lake restoration projects. Decreases in pH are permittes as long as carbon dioxide concentrations are not elevated above 1360 umol/L. Carbon dioxide concentrations above 1360 umol/L may be toxic to fish.,,EMS_0004 > 9.0,,No Effect,,,,"}},{"id":"7b0e4211c798579e","parameter":"pH (total)","value":"Unrestricted change when pH is greater than 7 and less than 8.7 to protect mollusc embryo development.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is marine","condition as printed: EMS_0004 <= 7 & EMS_0004 <= 8.7; EMS_0004 = pH"],"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 - Marine · Long-term chronic · Approved (UniqueID 652)","page":null,"quote":"652,pH,Total,EMS_0004,(NA),Aquatic Life - Marine,Water,Long-term chronic,30,5,mean,Unrestricted change when pH is greater than 7 and less than 8.7 to protect mollusc embryo development.,,EMS_0004 <= 7 & EMS_0004 <= 8.7,,No Effect,,,,"}},{"id":"5a6075b8b2e93096","parameter":"pH (total)","value":"No statistically significant decrease in pH from background when pH is less than 6.5.  No restriction on the increase in pH except in boggy areas that have a unique fauna or flora.  Site-specific ambient water quality objectives to restrict the pH increase in areas with a unique fauna and flora are recommended.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is freshwater","condition as printed: EMS_0004 < 6.5; EMS_0004 = pH"],"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 659)","page":null,"quote":"659,pH,Total,EMS_0004,(NA),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,No statistically significant decrease in pH from background when pH is less than 6.5. No restriction on the increase in pH except in boggy areas that have a unique fauna or flora. Site-specific ambient water quality objectives to restrict the pH increase in areas with a unique fauna and flora are recommended.,,EMS_0004 < 6.5,,No Effect,,,,"}},{"id":"2036b22a41947b2f","parameter":"pH (total)","value":"Unrestricted change permitted within a pH range of 6.5 to 9.  The component of the freshwater WQGs should be used cautiously if the pH change causes the carbon dioxide concentrations to exceed a 10 umol/L minimum or a 1360 umol/L short-term.  Carbon dioxide concentrations below 10 umol/L can cause a shift in the phytoplankton community to cyanobacteria, while carbon dioxide concentrations above 1360 umol/L can be toxic to fish.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is freshwater","condition as printed: EMS_0004 >= 6.5 & EMS_0004 <= 9; EMS_0004 = pH"],"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 660)","page":null,"quote":"660,pH,Total,EMS_0004,(NA),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,\"Unrestricted change permitted within a pH range of 6.5 to 9. The component of the freshwater WQGs should be used cautiously if the pH change causes the carbon dioxide concentrations to exceed a 10 umol/L minimum or a 1360 umol/L short-term. Carbon dioxide concentrations below 10 umol/L can cause a shift in the phytoplankton community to cyanobacteria, while carbon dioxide concentrations above 1360 umol/L can be toxic to fish.\",,EMS_0004 >= 6.5 & EMS_0004 <= 9,,No Effect,,,,"}},{"id":"7ab47772a1df697b","parameter":"pH (total)","value":"No statistically significant increase in pH from background when pH is above 9.  Short-term increases (2-3 days) to pH 9.5 are permitted for lake restoration projects.  Decreases in pH are permittes as long as carbon dioxide concentrations are not elevated above 1360 umol/L.  Carbon dioxide concentrations above 1360 umol/L may be toxic to fish.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is freshwater","condition as printed: EMS_0004 > 9.0; EMS_0004 = pH"],"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 661)","page":null,"quote":"661,pH,Total,EMS_0004,(NA),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,No statistically significant increase in pH from background when pH is above 9. Short-term increases (2-3 days) to pH 9.5 are permitted for lake restoration projects. Decreases in pH are permittes as long as carbon dioxide concentrations are not elevated above 1360 umol/L. Carbon dioxide concentrations above 1360 umol/L may be toxic to fish.,,EMS_0004 > 9.0,,No Effect,,,,"}},{"id":"40f7a4fdf9ea73f3","parameter":"pH (total)","value":"Unrestricted change when pH is greater than 7 and less than 8.7 to protect mollusc embryo development.","statistic":"monthly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:ph","place":["CA-BC"],"conditions":["receiving_water is marine","condition as printed: EMS_0004 <= 7 & EMS_0004 <= 8.7; EMS_0004 = pH"],"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 - Marine · Long-term chronic · Approved (UniqueID 662)","page":null,"quote":"662,pH,Total,EMS_0004,(NA),Aquatic Life - Marine,Water,Long-term chronic,30,5,mean,Unrestricted change when pH is greater than 7 and less than 8.7 to protect mollusc embryo development.,,EMS_0004 <= 7 & EMS_0004 <= 8.7,,No Effect,,,,"}},{"id":"8cd62e1beca9c76f","parameter":"pH","value":"6 to 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