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Background
This week we are returning to local issues – the provision of
sufficient, clean drinking water. Most drinking water comes
from freshwater that is in limited supply. This limitation is most
acute for areas relying on groundwater sources.
Guelph, Ontario, relies on groundwater to supply drinking water
for the population of nearly 132,000 people. The city is located
about 100 km west of downtown Toronto. Its population has
increased by 8.3% between 2011 and 2016. Guelph is located in
the “Guelph Drumlin Field” formed during glaciation (a land
form similar to that of the Oak Ridges Moraine). The drumlins
are well drained areas of sandy silt till and the esker is
comprised of welldrained sand and gravel. Both allow for
shallow groundwater recharge and pumping for drinking water.
Groundwater for drinking water is also pumped from underlying
bedrock of the Guelph-Amabel formation. To supplement these
naturally occurring groundwater sources, Guelph has developed
an engineered system in which the city artificially recharges the
shallow Arkell Spring Grounds using water from the nearby
Eramosa River. The city then draws shallow groundwater from
the Arkell Spring Grounds. Several debates and concerns have
been raised about the sufficiency of the future drinking water
supply coming from groundwater, to meet the needs of the
population of Guelph. These concerns include future land
development that could impeded groundwater recharge and
water-taking for the purpose of producing bottled water.
Goal
What considerations need to guide the provision of sufficient,
clean drinking water for Guelph into the future?
Your task is to develop components of a groundwater
management plan.
Your Assignment
1. How and where does Guelph obtain its drinking water? Use
three sentences to describe the source(s) of
Guelph’s drinking water supply. You need to cite at least one
reference in your explanation.
2. Identify two major competing uses for groundwater water
originating from the aquifers now supplying the Guelph
population. Cite at least one reference to substantiate the
information you obtained for each competing
use.
3. Identify two solutions intended to maintain a continued
supply of sufficient, clean drinking water for the Guelph area
for now and into the future (say 2050, which is within you
lifetime!). You could identify one supply-side solution and one
demand-side solution. Your solutions need to be realistic and
feasible. They can originate from other locations that obtain
groundwater or that experience water scarcity. Summarize each
solution in three sentences that include one reference each.
Citations: You need to substantiate each statement of
information with a citation. You need to cite the source within
the sentence that makes use of that informati on. Please give the
full details of the citation at the end of
your answers under the heading: “References Cited”. Please use
the APA style for citations.
Example: Freshwater supplies are under severe pressure due to
many competing uses, compounded by increasing populations
and demands (Gerten et al., 2013).
References Cited Gerten, D, Hoff H, Rockström J, Jägermeyr J,
Kummu M, Pastor AV. 2013. Towards a revised planetary
boundary for consumptive freshwater use: role of environmental
flow requirements. Current Opinion in Environ Sustain 51: 551-
558.

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BackgroundThis week we are returning to local issues – the p

  • 1. Background This week we are returning to local issues – the provision of sufficient, clean drinking water. Most drinking water comes from freshwater that is in limited supply. This limitation is most acute for areas relying on groundwater sources. Guelph, Ontario, relies on groundwater to supply drinking water for the population of nearly 132,000 people. The city is located about 100 km west of downtown Toronto. Its population has increased by 8.3% between 2011 and 2016. Guelph is located in the “Guelph Drumlin Field” formed during glaciation (a land form similar to that of the Oak Ridges Moraine). The drumlins are well drained areas of sandy silt till and the esker is comprised of welldrained sand and gravel. Both allow for shallow groundwater recharge and pumping for drinking water. Groundwater for drinking water is also pumped from underlying bedrock of the Guelph-Amabel formation. To supplement these naturally occurring groundwater sources, Guelph has developed an engineered system in which the city artificially recharges the shallow Arkell Spring Grounds using water from the nearby Eramosa River. The city then draws shallow groundwater from the Arkell Spring Grounds. Several debates and concerns have been raised about the sufficiency of the future drinking water supply coming from groundwater, to meet the needs of the population of Guelph. These concerns include future land development that could impeded groundwater recharge and water-taking for the purpose of producing bottled water. Goal
  • 2. What considerations need to guide the provision of sufficient, clean drinking water for Guelph into the future? Your task is to develop components of a groundwater management plan. Your Assignment 1. How and where does Guelph obtain its drinking water? Use three sentences to describe the source(s) of Guelph’s drinking water supply. You need to cite at least one reference in your explanation. 2. Identify two major competing uses for groundwater water originating from the aquifers now supplying the Guelph population. Cite at least one reference to substantiate the information you obtained for each competing use. 3. Identify two solutions intended to maintain a continued supply of sufficient, clean drinking water for the Guelph area for now and into the future (say 2050, which is within you lifetime!). You could identify one supply-side solution and one demand-side solution. Your solutions need to be realistic and feasible. They can originate from other locations that obtain groundwater or that experience water scarcity. Summarize each solution in three sentences that include one reference each. Citations: You need to substantiate each statement of information with a citation. You need to cite the source within the sentence that makes use of that informati on. Please give the full details of the citation at the end of
  • 3. your answers under the heading: “References Cited”. Please use the APA style for citations. Example: Freshwater supplies are under severe pressure due to many competing uses, compounded by increasing populations and demands (Gerten et al., 2013). References Cited Gerten, D, Hoff H, Rockström J, Jägermeyr J, Kummu M, Pastor AV. 2013. Towards a revised planetary boundary for consumptive freshwater use: role of environmental flow requirements. Current Opinion in Environ Sustain 51: 551- 558.