Ontario's water quality objective development process

Aquatic Criteria Development Committee, Water Resources Branch, Ontario Ministry of the Environment

Ontario's water quality objective development process

dc.contributor.author	Aquatic Criteria Development Committee, Water Resources Branch, Ontario Ministry of the Environment
dc.coverage.spatial	Ontario
dc.date.accessioned	2019-03-14T17:50:41Z
dc.date.available	2019-03-14T17:50:41Z
dc.date.copyright	1992
dc.date.created	1992-03
dc.identifier.uri	http://hdl.handle.net/10214/15785
dc.description.abstract	As part of its program to ensure that the surface waters of Ontario are satisfactory for aquatic life and recreation, the Ontario Ministry of the Environment develops Provincial Water Quality Objectives (PWQOs) and Guidelines (PWQGs). This report details the procedures used to develop PWQOs and PWQGs. PWQOs are developed from the best available knowledge on the effects of substances on aquatic life. Data are required for acute and chronic toxicity, bioaccumulation and mutagenicity. Also considered is available information on environmental fate, physical-chemical properties, taste and odour in water and tainting of fish tissues. If adequate information is unavailable for setting a PWQO, a PWQG is developed using uncertainty factors which depend on the quantity and quality of the toxicological data.
dc.format	pdf
dc.language.iso	en
dc.publisher	Ontario Ministry of the Environment
dc.rights	Queen's Printer for Ontario, Crown Copyright, Non-Commercial Use Permitted
dc.rights.uri	https://www.ontario.ca/page/copyright-information-c-queens-printer-ontario
dc.subject	water quality
dc.subject	Provincial Water Quality Objectives
dc.subject	Provincial Water Quality Objectives Guidelines
dc.subject	toxicity
dc.subject	bioaccumulation
dc.subject	mutagenicity
dc.title	Ontario's water quality objective development process
dc.type	Report
dc.rights.holder	Queen's Printer for Ontario