Passage Data · Cited limits by place · Use it from your AI

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

11 numeric limits and guidelines for chlorine held for British Columbia and the place above it, from 5 instruments, each cited to its instrument, edition, section or page and quoted text. The register was built from 249 instruments. Everything held for British Columbia

Ask your AI assistant and get the cite back: add Passage Data to Claude, ChatGPT, Cursor, VS Code or Microsoft 365 Copilot. Free, no key.

The address: https://passage-data.com/mcp

In a chat app

In a coding tool

Then ask it, for example: “What are the chlorine limits in British Columbia? Cite each one.”

For programs: this page as JSON at /api/v1/limits?parameter=chlorine&place=CA-BC; the same at https://passage-data.com/mcp, a remote MCP server (tool find_limits). Every tool · llms.txt · OpenAPI

British Columbia (CA-BC): 8 rows

ParameterValueUnitStatisticGovernsApplies whenCite
chlorine (Cl2)20⁴, 30⁵µg/Lgroundwater · limita site whose water the Contaminated Sites Regulation governs; the standard is met in the site's groundwater or surface water, a minimum 1:10 dilution assumed before discharge to the aquatic receiving environment (Schedule 3.2 note 2(a))
receiving water: freshwater, marine		B.C. Reg. 375/96 Contaminated Sites Regulation
p. 5
chlorine (Cl2)20µg/Lgroundwater · limita site whose water the Contaminated Sites Regulation governs; the standard is met in the site's groundwater or surface water, a minimum 1:10 dilution assumed before discharge to the aquatic receiving environment (Schedule 3.2 note 2(a))
receiving water: freshwater
note 4: Standard to protect freshwater aquatic life. Water is to be considered freshwater if its salinity measures less than 1.5 Practical Salinity Units.		B.C. Reg. 375/96 Contaminated Sites Regulation
p. 5
chlorine (Cl2)30µg/Lgroundwater · limita site whose water the Contaminated Sites Regulation governs; the standard is met in the site's groundwater or surface water, a minimum 1:10 dilution assumed before discharge to the aquatic receiving environment (Schedule 3.2 note 2(a))
receiving water: marine
note 5: Standard to protect marine and estuarine aquatic life. Water is to be considered marine or estuarine if its salinity measures greater than 1.5 Practical Salinity Units.		B.C. Reg. 375/96 Contaminated Sites Regulation
p. 5
chlorine (Cl2)1 000µg/Lgroundwater · limitIrrigation (IW)
note 2(e): Standards for irrigation water apply to irrigation of all soil types, unless otherwise indicated.		B.C. Reg. 375/96 Contaminated Sites Regulation
p. 5
Chlorine Residual (total)100ug/Linstantaneoussurface water · guidelinereceiving water: freshwater
Duration < 2 hours within 24 hour period.		B.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Short-term acute · Approved (UniqueID 202)
202,Chlorine Residual,Total,EMS_1016,(7782-50-5),Aquatic Life - Freshwater,Water,Short-term acute,1,1,max,,,,Duration < 2 hours within 24 hour period.,No Effect,Upper Limit,100,,ug/L
Chlorine Residual (total)2ug/Lmonthly averagesurface water · guidelinereceiving water: freshwaterB.C. Approved Water Quality Guidelines
Aquatic Life - Freshwater · Long-term chronic · Approved (UniqueID 204)
204,Chlorine Residual,Total,EMS_1016,(7782-50-5),Aquatic Life - Freshwater,Water,Long-term chronic,30,5,mean,,,,,No Effect,Upper Limit,2,,ug/L
Chlorine Residual (total)40ug/Linstantaneoussurface water · guidelinereceiving water: marine
Duration < 2 hours within 24 hour period.		B.C. Approved Water Quality Guidelines
Aquatic Life - Marine · Short-term acute · Approved (UniqueID 205)
205,Chlorine Residual,Total,EMS_1016,(7782-50-5),Aquatic Life - Marine,Water,Short-term acute,1,1,max,,,,Duration < 2 hours within 24 hour period.,No Effect,Upper Limit,40,,ug/L
Chlorine Residual (total)3ug/Lmonthly averagesurface water · guidelinereceiving water: marineB.C. Approved Water Quality Guidelines
Aquatic Life - Marine · Long-term chronic · Approved (UniqueID 207)
207,Chlorine Residual,Total,EMS_1016,(7782-50-5),Aquatic Life - Marine,Water,Long-term chronic,30,5,mean,,,,,No Effect,Upper Limit,3,,ug/L

Canada (CA): 3 rows

ParameterValueUnitStatisticGovernsApplies whenCite
Chlorine, Reactive Species0.5µg/Lsurface water · guidelinereceiving water: freshwater
long-term exposure: CCME's long-term guideline		CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life
Chlorine, Reactive Species0.5µg/Lsurface water · guidelinereceiving water: marine
long-term exposure: CCME's long-term guideline		CCME Canadian Water Quality Guidelines for the Protection of Aquatic Life
Total residual chlorine0.02 mg/Lmg/Leffluent · limitstream: sanitary
route: direct
zone: not CA-NT, CA-NU, CA.qc_nl_north_of_54
a wastewater system designed to collect, or collecting in a calendar year, an average daily volume of 100 m3 or more of influent (s. 2(1)); not one on an industrial site whose influent is less than 50% blackwater and greywater (s. 2(4))
if chlorine, or one of its compounds, was used in the treatment of wastewater		Wastewater Systems Effluent Regulations (SOR/2012-139) — s. 6 effluent quality
s. 6(1)
(c) the average concentration of total residual chlorine in the effluent did not exceed 0.02 mg/L, if chlorine, or one of its compounds, was used in the treatment of wastewater.

Not held here: a discharge permit's own limits, and any rule for chlorine 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 “chlorine”: chlorine, chlor freies, cloro attivo, cloro residuo, chlorine demand, chlorine dioxide, chlore dioxyde de, cloro attivo libero, chlorine trifluoride, 1 chlor 2 nitrobenzol, 1 chlor 4 nitrobenzol, chlore residuel total, and 11 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 — 4 rows 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 — 3 rows here
  3. 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
  4. 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 — 1 row here
  5. 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 — 1 row here
11 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. 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 — no row here
  3. 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
  4. 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 — 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. 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 — no row here
  8. 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 — no row here
  9. 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 — no row here
  10. 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
  11. 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 — 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.