Main content

Ontario's water quality objective development process

Show full item record

Title: Ontario's water quality objective development process
Author: Aquatic Criteria Development Committee, Water Resources Branch, Ontario Ministry of the Environment
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.
Date: 1992
Rights: Queen's Printer for Ontario, Crown Copyright, Non-Commercial Use Permitted
Rights Holder: Queen's Printer for Ontario

Files in this item

Files Size Format View
OME_ON_watqual_obj_dev_1992.pdf 461.9Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record

The library is committed to ensuring that members of our user community with disabilities have equal access to our services and resources and that their dignity and independence is always respected. If you encounter a barrier and/or need an alternate format, please fill out our Library Print and Multimedia Alternate-Format Request Form. Contact us if you’d like to provide feedback:  (email address)