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pH limits and guidelines in British Columbia (CA-BC)

23 numeric limits and guidelines for ph held for British Columbia and the place above it, from 8 instruments, each cited to its instrument, edition, section or page and quoted text. The register was built from 247 instruments. Everything held for British Columbia

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British Columbia (CA-BC): 13 rows

ParameterValueUnitStatisticGovernsApplies whenCite
pH6 − 9pH unitseffluent · limitstream: sanitary
route: direct
receiving water: 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
Municipal Wastewater Regulation (B.C. Reg. 87/2012)
s. 94, Table 11, Column A
daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9
pH6 − 9pH unitseffluent · limitstream: sanitary
route: direct
receiving water: 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
Municipal Wastewater Regulation (B.C. Reg. 87/2012)
s. 94, Table 11, Column B
daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9
pH6 − 9pH unitseffluent · limitstream: sanitary
route: direct
receiving water: freshwater
a lake with a surface area ≥ 100 ha (Column C)
maximum daily flow > 50 m3/d (Table 11)
daily flows < 2 × ADWF
Municipal Wastewater Regulation (B.C. Reg. 87/2012)
s. 94, Table 11, Column C
daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9
pH6 − 9pH unitseffluent · limitstream: sanitary
route: direct
receiving water: marine
open marine waters (Column D)
maximum daily flow > 50 m3/d (Table 11)
daily flows < 2 × ADWF
Municipal Wastewater Regulation (B.C. Reg. 87/2012)
s. 94, Table 11, Column D
daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9
pH6 − 9pH unitseffluent · limitstream: sanitary
route: direct
receiving water: marine
embayed marine waters (Column E)
maximum daily flow > 50 m3/d (Table 11)
daily flows < 2 × ADWF
Municipal Wastewater Regulation (B.C. Reg. 87/2012)
s. 94, Table 11, Column E
daily flows < 2x ADWF: pH 6 − 9 6 − 9 6 − 9 6 − 9 6 − 9
pH (total)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.monthly averagesurface water · guidelinereceiving water: freshwater
condition as printed: EMS_0004 < 6.5; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 649)
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.,,E… (428 characters; whole in the JSON)
pH (total)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.monthly averagesurface water · guidelinereceiving water: freshwater
condition as printed: EMS_0004 >= 6.5 & EMS_0004 <= 9; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 650)
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 … (566 characters; whole in the JSON)
pH (total)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.monthly averagesurface water · guidelinereceiving water: freshwater
condition as printed: EMS_0004 > 9.0; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 651)
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 136… (461 characters; whole in the JSON)
pH (total)Unrestricted change when pH is greater than 7 and less than 8.7 to protect mollusc embryo development.monthly averagesurface water · guidelinereceiving water: marine
condition as printed: EMS_0004 <= 7 & EMS_0004 <= 8.7; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Marine · Long-term chronic · Approved (UniqueID 652)
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,,,,
pH (total)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.monthly averagesurface water · guidelinereceiving water: freshwater
condition as printed: EMS_0004 < 6.5; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 659)
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.,,E… (428 characters; whole in the JSON)
pH (total)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.monthly averagesurface water · guidelinereceiving water: freshwater
condition as printed: EMS_0004 >= 6.5 & EMS_0004 <= 9; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 660)
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 … (566 characters; whole in the JSON)
pH (total)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.monthly averagesurface water · guidelinereceiving water: freshwater
condition as printed: EMS_0004 > 9.0; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 661)
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 136… (461 characters; whole in the JSON)
pH (total)Unrestricted change when pH is greater than 7 and less than 8.7 to protect mollusc embryo development.monthly averagesurface water · guidelinereceiving water: marine
condition as printed: EMS_0004 <= 7 & EMS_0004 <= 8.7; EMS_0004 = pH
B.C. Approved Water Quality Guidelines
Aquatic Life - Marine · Long-term chronic · Approved (UniqueID 662)
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,,,,

Canada (CA): 10 rows

ParameterValueUnitStatisticGovernsApplies whenCite
pH6 to 8mg/kgsoil · guidelineConcentration (mg/kg dry weight) AgriculturalCCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table,…
pH6 to 8mg/kgsoil · guidelineConcentration (mg/kg dry weight) Residential/ parklandCCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table,…
pH6 to 8mg/kgsoil · guidelineConcentration (mg/kg dry weight) CommercialCCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table,…
pH6 to 8mg/kgsoil · guidelineConcentration (mg/kg dry weight) IndustrialCCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table,…
pH6.5 to 9.0µg/Lsurface water · guidelinereceiving water: freshwater
long-term exposure: CCME's long-term guideline
CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life
pH7.0 to 8.7 & Narrativeµg/Lsurface water · guidelinereceiving water: marine
long-term exposure: CCME's long-term guideline
CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life
pHequal to or greater than 6.0 but is not greater than 9.5pH unitseffluent · limitcites: MDMER
route: direct
a metal mine (or, since June 1, 2018, a diamond mine) whose final discharge points deposit more than 50 m3 of effluent per day (s. 2(1))
Metal and Diamond Mining Effluent Regulations (SOR/2002-222)
s. 4(1)(b)
(b) the pH of the effluent is equal to or greater than 6.0 but is not greater than 9.5; and (c) the effluent is not acutely lethal.
pHbetween 6.0 and 9.0pH unitscomposite sampleeffluent · limitcites: Meat and Poultry Products Plant Liquid Effluent Regulations
route: direct
a new plant (commercial production from March 31, 1977) or an expanded plant (s. 3; s. 2(1))
Meat and Poultry Products Plant Liquid Effluent Regulations (C.R.C., c. 818)
s. 5(c)
(c) the pH of each composite sample of effluent, determined in accordance with subsection 9(3), is between 6.0 and 9.0.
pHbetween 6.0 and 9.0pH unitscomposite sampleeffluent · limitcites: Potato Processing Plant Liquid Effluent Regulations
route: direct
a new plant (commercial production from June 27, 1977) or an expanded plant (s. 3; s. 2(1))
Potato Processing Plant Liquid Effluent Regulations (C.R.C., c. 829)
s. 5(c)
(c) the pH of each composite sample of effluent, determined in accordance with subsection 9(3), is between 6.0 and 9.0.
pHwithin the limits of 6.0 and 9.5pH unitseffluent · limitcites: PRLER
route: direct
Petroleum Refinery Liquid Effluent Regulations (C.R.C., c. 828) — Schedule I authorized deposits
s. 5(2)
the owner of a refinery may deposit the deleterious substance prescribed in paragraph 4(f) if the pH of the liquid effluent or once-through cooling water is within the limits of 6.0 and 9.5.

Not held here: a discharge permit's own limits, and any rule for ph outside the 16 instruments we hold for this place and the places above it. A row missing here is missing from our sources, not from the law.

Free check: send your permit or your lab results, and we check each number against these rows, every verdict cited to its page, by email within 5 business days. Or send the link to a rule we do not hold: we read it and cite it by page.

What was searched

Every instrument we hold for British Columbia (CA-BC) and the place above it, Canada (CA): 16 instruments, for every parameter name matching “ph”: ph, ph wert, ph change ph, siloxanes and silicones me ph, aluminum dissolved ph 6 5 9 0 only, aluminum dissolved ph 6 5 to 9 0 only, parathion pentachlorophenol e 1 005 ph 4 869, polysiloxanes di me di ph hydroxy terminated, 1 4 benzenediamine n n mixed ph and tolyl derivs, siloxanes and silicones di me di ph hydroxy terminated, siloxanes and silicones di ph me ph polymers with me ph silsesquioxanes, siloxanes and silicones di me me methoxy methoxy ph polymers with me ph silsesquioxanes, and 2 more (in the JSON).

  1. B.C. Approved Water Quality Guidelines: Aquatic Life — freshwater, marine and estuarine, short-term acute and long-term chronic · Government of British Columbia, Ministry of Environment and Parks (Water Protection and Sustainability Branch) · 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 sha256 1673409ad5c17fa364589bb20f830055bc21d6e765a40681f06b510f6614f26a — 8 rows here
  2. Municipal Wastewater Regulation (B.C. Reg. 87/2012) — s. 94 Tables 9-11 municipal effluent quality, s. 96 fecal coliforms, s. 97 phosphorus · Government of British Columbia (Environmental Management Act) · BC Laws consolidation current to October 6, 2026 (am. B.C. Reg. 50/2024) · source sha256 0fef8d2da18bd3698cb11c2b2d7296ff1c22405b93cc7128c52c6111d49e49a6 — 5 rows here
  3. CCME — Soil Quality Guidelines for the Protection of Environmental and Human Health (Summary Table, as served 2026-09-24) · Canadian Council of Ministers of the Environment (CCME) · Summary Table · source sha256 f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499 — 4 rows here
  4. CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life — freshwater and marine, short and long term · Canadian Council of Ministers of the Environment (CCME) · Summary Table (as served 2026-09-24; each guideline carries its own year) · source sha256 f484a5f2a2dfcb5a4257763c853fc8dc810788cec54c75355b30ec194e2f7499 — 2 rows here
  5. Metal and Diamond Mining Effluent Regulations (SOR/2002-222) — Schedule 4, maximum authorized concentrations · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 2c6e0151d3776378f73df4868ca98052882ee81faf9738bbeba6f5d544b648fe — 1 row here
  6. Meat and Poultry Products Plant Liquid Effluent Regulations (C.R.C., c. 818) — Schedule I authorized deposits · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 c60e2a2dfa9a10c2ddd314b391bf66215ad599732f38b4c5a15fe793d8c28841 — 1 row here
  7. Potato Processing Plant Liquid Effluent Regulations (C.R.C., c. 829) — Schedule I authorized deposits · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 691ca3953a6dd6ae66b4c72737944caa68ed76710447df642a16716dd25027a3 — 1 row here
  8. Petroleum Refinery Liquid Effluent Regulations (C.R.C., c. 828) — Schedule I authorized deposits · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 30e528bdc3a3546afb3defff4dae9b1dacb362e192680e127bd788d7f97c8ce8 — 1 row here
8 instruments searched with no row for it
  1. B.C. Reg. 375/96 Contaminated Sites Regulation — Schedule 3.1 Parts 1, 2 and 3, matrix and generic numerical soil standards · Government of British Columbia (Environmental Management Act) · This consolidation is current to September 15, 2026. · source sha256 f69b12b38ce71f5bad4842242a2390be2eeeef94ac7fcc116d57c4e34d6ffc21 — no row here
  2. B.C. Reg. 375/96 Contaminated Sites Regulation — Schedule 3.2 generic numerical water standards, aquatic life (freshwater and marine) · Government of British Columbia (Environmental Management Act) · This consolidation is current to September 15, 2026. · source sha256 f69b12b38ce71f5bad4842242a2390be2eeeef94ac7fcc116d57c4e34d6ffc21 — no row here
  3. B.C. Reg. 375/96 Contaminated Sites Regulation — Schedule 3.2 generic numerical water standards, drinking water, irrigation and livestock · Government of British Columbia (Environmental Management Act) · This consolidation is current to September 15, 2026. · source sha256 f69b12b38ce71f5bad4842242a2390be2eeeef94ac7fcc116d57c4e34d6ffc21 — no row here
  4. Canadian Ambient Air Quality Standards (CAAQS), environmental quality objectives under CEPA 1999 ss. 54(1) and 55(1): Objectives for Ambient PM2.5 and Ozone, Annex paras 1-4 and footnotes 1-2, Canada Gazette Part I, Vol. 147, No. 21, May 25, 2013 · Canada Gazette, Part I, Volume 147, Number 21: GOVERNMENT NOTICES May 25, 2013 · source — no row here
  5. Fisheries Act (R.S.C. 1985, c. F-14), s. 36(3) — no deposit of a deleterious substance in water frequented by fish; no value printed · Government of Canada (Fisheries Act; Environment and Climate Change Canada administers s. 36) · Justice Laws Website, current to 2026-09-21, last amended 2024-11-27 · source sha256 db95b0a149728b0f0b1e1b1314d87ecdf46a91e1edfec4a7006fc3cbe0080bd6 — no row here
  6. Health Canada, Objective for Canadian drinking water quality — per- and polyfluoroalkyl substances (published 2024-08-09) · Health Canada · Objective value · source sha256 32a42a0d382cdd90729dd9750f47889782bd00d4af8dfd34f2b9aaf6f2678c6c — no row here
  7. Pulp and Paper Effluent Regulations (SOR/92-269) — s. 14 maximum BOD and suspended solids · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21 · source sha256 cc8432e6a4dd1834ff4dd43d5b5fb98f09b1f7af7952e36154febcc649504eb4 — no row here
  8. Wastewater Systems Effluent Regulations (SOR/2012-139) — s. 6 effluent quality · Government of Canada (Fisheries Act; Environment and Climate Change Canada) · Justice Laws Website, current to 2026-09-21, last amended 2026-06-04 · source sha256 0a60e10f783f7aca672792303dffcca1525133eb34eb32711543cb3cf4bbb955 — no row here

Read from public law and public agency files. A row missing here is missing from our sources, not from the law of the place. Check the cited source before relying on a value.