All Resources

An initial assessment of microcystin in raw and treated municipal drinking water derived from eutrophic surface waters in Alberta

Description

Microcystin, a widespread hepatotoxin, has been the topic of recent research in Alberta and it is suspected that certain communities may be exposed to this toxin because elevated levels have been... More ≫

Description

Microcystin, a widespread hepatotoxin, has been the topic of recent research in Alberta and it is suspected that certain communities may be exposed to this toxin because elevated levels have been measured in their raw water supplies. However, the total extent of microcystin in Alberta’s raw drinking water sources remains largely undetermined. Furthermore, it is unclear whether traditional drinking water treatment practices effectively remove microcystin. The objectives of this study were: to assess the prevalence of microcystin in selected municipal raw water sources; to determine if current water treatment practices adequately remove the toxin; and to determine the efficacy of an experimental bio-filtration process for the removal of microcystin.

Tags

Initial results of the Pine Lake restoration program

Description

Pine Lake is a small eutrophic lake southeast of Red Deer, Alberta. Public concern over deteriorating water quality prompted the Alberta government to initiate a lake restoration program in 1991.... More ≫

Description

Pine Lake is a small eutrophic lake southeast of Red Deer, Alberta. Public concern over deteriorating water quality prompted the Alberta government to initiate a lake restoration program in 1991. The Pine Lake Restoration Program was intended as a pilot project for future lake and watershed projects in Alberta. An advisory committee that represented all stakeholders in the community directed early planning and problem diagnosis by technical advisors from the Alberta government. A diagnostic study in 1992 determined that approximately 61% of the total phosphorus (TP) loading was from sediment release and other internal sources, compared to about 36% from surface runoff, and determined that nuisance algal blooms in Pine Lake were mainly controlled by the supply of phosphorus.

Tags

Volunteer citizens' lake monitoring program (1991) : Buck Lake

Description

The volunteer citizens' lake monitoring program was conceived in response to concerns expressed by lakeshore property owners that the water quality of their lake was deteriorating. The samples... More ≫

Description

The volunteer citizens' lake monitoring program was conceived in response to concerns expressed by lakeshore property owners that the water quality of their lake was deteriorating. The samples collected by volunteer citizens provide background information that can be used to assess future impacts, enhance existing database on lakes and reservoirs, and assess seasonal trends in algal populations.

Tags

Assessment of the potential for water quality improvement in Pine Lake

Description

In 1989, a study was initiated to determine the present condition of Pine Lake, to identify nutrient sources and to assess possibilities of reducing nutrient input so that lake water quality would improve. More ≫

Description

In 1989, a study was initiated to determine the present condition of Pine Lake, to identify nutrient sources and to assess possibilities of reducing nutrient input so that lake water quality would improve.

Tags

Long-term trends in the water quality of the Beaver River

Description

This evaluation of long-term trends in water quality of the Beaver River focuses on those data collected at Beaver Crossing from January 1973 to July 1989.

Tags

Volunteer citizens' lake monitoring program (1989) : Skeleton, Buffalo and Capt. Eyre lakes

Description

The Volunteer Citizens' Lake Monitoring Program, which began in 1988 as a pilot study on Lac Ste Anne and Pigeon lake, has three main objectives: 1) to provide an opportunity for lakeshore... More ≫

Description

The Volunteer Citizens' Lake Monitoring Program, which began in 1988 as a pilot study on Lac Ste Anne and Pigeon lake, has three main objectives: 1) to provide an opportunity for lakeshore property owners to learn first hand about water sampling procedures related to lake management; 2) to improve the existing water quality database for a particular lake, and 3) to encourage environmental responsibility among lake users.

Tags

An evaluation of nutrients and biological conditions in the Bow River, 1986 to 1988

Description

This report presents the results of 1986-88 Bow River water quality monitoring programs conducted by Alberta Environment. Plant nutrient, coliform bacteria count and aquatic plant biomass trends... More ≫

Description

This report presents the results of 1986-88 Bow River water quality monitoring programs conducted by Alberta Environment. Plant nutrient, coliform bacteria count and aquatic plant biomass trends and differences between sites were analyzed. This program was mainly designed to detect changes in river water quality since the installation of phosphorus removal at Calgary sewage treatment plants in 1982-83.

Tags