Municipal water well efficiency programs - a fresh approach in Peel Region: the good, the bad and the imminent

In this study the changes in the quality of groundwater are described on the basis of material collected at some groundwater extraction plants situated mainly in urban areas. The causes of the marked increase in the content of dissolved solids are evaluated from the 1960s onwards.

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Identification of Taste and Odour Compounds from Western Lake Ontario

Water Quality Research Journal ◽

10.2166/wqrj.1984.010 ◽

1984 ◽

Vol 19 (1) ◽

pp. 111-118 ◽

Cited By ~ 6

Author(s):

B.G. Brownlee ◽

D.S. Painter ◽

R.J. Boone

Keyword(s):

Water Supply ◽

Water Samples ◽

Elemental Sulfur ◽

Lake Ontario ◽

Direct Link ◽

Municipal Water Supply ◽

Municipal Water ◽

Western Lake ◽

Odour Concentration

Abstract During August, 1983 geosmin was identified in a municipal water supply drawn from western Lake Ontario. The geosmin concentrations were 0.01-0.07 μg L-1, within the range for threshold odour concentration of 0.01-0.2 μg L-1. 2-Methylisoborneol was not detected. The odour 'event' coincided with a dieoff of Cladophora in the lake, but we were not able to establish a direct link between the dieoff and geosmin production. Decomposing Cladophora in shoreline areas produced a strong odour in the air. 3-Methylindole, elemental sulfur, dimethyl tetrasulfide, and dimethyl pentasulfide were tentatively identified in water samples collected from these areas, but geosmin and 2-methylisoborneol were not detected.

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The Control of Iron Bacterial Plugging of a Well by Tyndallization Using Hot Water Recycling

Water Quality Research Journal ◽

10.2166/wqrj.1986.005 ◽

1986 ◽

Vol 21 (1) ◽

pp. 50-57 ◽

Cited By ~ 3

Author(s):

D. R. Cullimore ◽

N. Mansuy

Keyword(s):

Direct Injection ◽

Small Diameter ◽

Hot Water ◽

Water Recycling ◽

Water Heater ◽

Time Intervals ◽

Flow Rates ◽

Water Well ◽

Flow Loss ◽

The Town

Abstract A small diameter water well drilled in 1977 in the Town of Bulyea, Saskatchewan generated such a rapid plugging (biofouling) that by 1979 the flow rate was reduced by 59%. Heavy growths of non-specific iron bacteria were found in the water and biofouling projected to be the principal cause of the flow loss. Tyndallization (repeated pasteurizations) treatment was applied using a hot water recycling system installed above the well head. Using a displacement passive gravity direct injection of hot water at 82°C from a water heater into the well, a sequential elevation of water column temperatures occurred until bio-film dispersion occurred (pasteurization) at 45°C+. A recovery to original flow specifications was repeatedly obtained at time intervals ranging from 6 to 403 days. Between treatments, a recurrence of biofouling was noted with flow reductions of 0.06 – 0.07 1/min/day frequently being noted. The rate of plugging appeared to be affected by the previous sequence of pasteurization treatments. Tyndallization was found to satisfactorily control iron bacterial biofouling and maintain flow rates.

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Public Evaluation of Municipal Water Reuse Alternatives

Water Science & Technology ◽

10.2166/wst.1992.0597 ◽

1992 ◽

Vol 26 (7-8) ◽

pp. 1537-1543 ◽

Cited By ~ 4

Author(s):

W. H. Bruvold

Keyword(s):

Water Reuse ◽

Environmental Planning ◽

Public Involvement ◽

Intermediate Phase ◽

Population Surveys ◽

Short List ◽

Municipal Water ◽

Public Evaluation ◽

Technical Planning ◽

The One

Models recommended for public involvement in environmental planning call for: 1) early and full involvement with technical planners from the start, 2) involvement at an intermediate phase once technical planners have developed a short list of the most feasible alternatives, and 3) later involvement only by ratification of the one alternative selected and developed by technical planners. The present study reports results assessing public involvement in planning at the intermediate phase using results from three general population surveys of the greater San Diego area done in 1989, 1990, and 1991 which dealt with municipal water reuse alternatives. Feasibility of the intermediate approach was demonstrated by correspondence between survey and technical planning evaluations and by consistency between and within survey findings.

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Conduit Hydropower for Municipal Water Systems

Proceedings of the Water Environment Federation ◽

10.2175/193864715819558776 ◽

2015 ◽

Vol 2015 (2) ◽

pp. 1-9

Author(s):

Todd J Briggeman ◽

Dennis J Hogan

Keyword(s):

Water Systems ◽

Municipal Water

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