Make rainwater harvesting compulsory
By Chris Tufton
Sunday, March 03, 2013
The following is an edited version of a presentation to the Senate last
Friday by Senator Dr Chris Tufton on a motion he moved calling on the
Government to develop a policy mandating rain water harvesting systems
for future residential developments. The motion was accepted by the
Senate.
WATER shortage is a critical issue facing our island annually. This is
caused by a combination of factors, including drought conditions at
certain times of the year and the lack of water storage, processing and
piped infrastructure to retain and distribute this precious commodity
from rain, aquifers, rivers and streams.
Globally, the availability of potable water is attracting
increasing attention as a critical human rights imperative. Scientists
have identified global warming, pollution, population increase and
poverty as some of the main reasons for unequal access to this important
commodity.
From the perspective of business, safe fresh water is critical to drive
industry and commerce and the cost associated with securing this
commodity has also impacted business efficiency and final cost to
consumers.
Predictable droughts
Jamaica suffers from predictable drought conditions at different periods
during a typical year, and this is projected to get worse over time.
With consistency, each year the Government has had to implement measures
to provide this scarce commodity during these times. These measures are
never adequate, as evidenced by disgruntled residents who express
frustration for the lack of this precious product.
Call-in programmes and demonstrations are not unusual as means of public
protests. However, there is also silent suffering and long-term impact
on human and national development. Water shortage has caused children to
be absent from school and parents to be absent from work.
Contaminated water
Adequate and clean water is fundamental to human health. When water is
scare, water-related illnesses are more prevalent. Largely because
citizens don't have enough and are forced to either go without for long
periods or consume from contaminated sources. This is a challenge the
world over.
According to the World Health Organisation (WHO) in 2008, more than 3.4
million people die each year from water, sanitation, and hygiene-related
causes, with 99 per cent of those deaths occurring in developing
countries.
In 2012, a WHO/UNICEF Joint Monitoring Programme concluded that 780
million people lack access to an improved water source, approximately
one in nine people.
On July 28, 2010, through Resolution 64/292, the United Nations General
Assembly explicitly recognised the human right to water and sanitation.
The Resolution called on countries and international organisations to
provide support for capacity-building and technology transfer to help
countries, in particular developing countries, to provide safe, clean,
accessible and affordable drinking water and sanitation for all.
Jamaica's position
As a country we are failing to adequately prepare ourselves to provide this human right.
Like the rest of the world, and based on global warming projections,
Jamaica's level of rainfall is projected to decrease within the next two
decades, some may argue, alarmingly so. Jamaica's rainfall
predominantly occurs in the wet months of May, August, September and
October.
Currently, the long-term average annual rainfall in Jamaica is
approximately 1,900 millimeters. But according to the World Bank Group,
Jamaica's monthly average rainfall in the period of 2020 to 2039 could
decline significantly, thereby having a dramatic impact on our water
resources.
Currently 84 per cent of the island's water resource is underground
sources. If the average rainfall decreases in the island, then so will
the predominant source of the island's water supply. Our own vision 2030
projections are predicting that climate change is expected to have a
major impact on the island's ground water as rising sea levels will
increase the salinity of coastal aquifers.
Limitations of the NWC
A typical single-family home, between three and five persons, is
estimated to use 3,000 and 5,000 gallons of treated water per month,
according to the National Water Commission (NWC). On a daily basis the
NWC supplies around 190 million gallons of water to approximately two
million people across the island. However, the NWC is unable to
properly meet the water demand for a number of reasons.
Firstly, nearly a third of the country's population doesn't have access
to piped water. And where piped water exists, due to limited catchment,
storage, processing and distribution infrastructure, water lock offs are
routine during certain times of the year. Secondly, NWC has major
operational challenges largely due to lack of resources. The
commission's infrastructure is old and has not kept pace with population
increases.
Today, 60 per cent of NWC water does not generate any revenue stream.
Half of that quantity is classified as social water and the other half
is wasted in distribution due to old leaking pipes. The NWC has a master
plan, but no money to implement it. Given all these reasons, I am not
convinced that we can depend on the NWC to solve the country's water
challenges in totality. In fact, given budget limitations and
projections of reduced rainfall, it is imperative that we find other
approaches to compliment, if not replace, our dependence on the NWC.
Rainwater harvesting systems
For all these reasons, as a country, we must come to terms with our
current and future water needs and look at all the possible ways to
practise sustainable approaches to secure our water need for domestic
use. Given that we are a small island with relatively predictable
rainfall each year, we can benefit from a more structured programme for
rainwater harvesting.
Others like us who are similarly challenged are doing this. It makes sense for us to learn from them and do the same.
A rainwater harvesting system consists of three basic elements: a
collection area, a conveyance system, and storage facilities. The
collection area in most cases is the roof of a house or a building. The
effective roof area and the material used in constructing the roof
influence the efficiency of collection and the water quality. The water
ultimately is stored in a tank or cistern, which should also be
constructed of an inert material.
Depending on the catchment system, there can be issues about how safe
this water is for drinking, so rules would have to be put in place to
guide this process. Reinforced concrete, fiberglass, or stainless steel
are suitable materials which are popular choices here for roofing. It is
also important to note that rainwater harvested for domestic purposes
can be used for so many other things around the house -- cooking,
washing, cleaning, for example.
Countries in the region such as St Lucia, Turks and Caicos, Bermuda, and
Barbados all have compulsory rain harvesting systems to assist in
addressing their domestic water needs.
In the case of Barbados, the Government mandated, effective January 1,
1996, all new residences in the country to construct water storage
facilities if the roof area or living area equals or exceeds 3,000
square feet.
Funding proposal
Some countries in recognition of the costs, but also the importance of
this initiative, provide incentives for build out of rainwater
harvesting systems.
In the case of Barbados, a rebate of $0.50 per gallon of installed tank
capacity, up to the equivalent of 25 per cent of the total roof area, is
given as an incentive by the Barbados Water Authority.
Given our financial constraints, we may not have the capacity to offer that incentive.
I would like to propose that as part of the consideration for this new
policy, Government takes a look at property taxes rebates for a limited
period of time to offset the additional costs for installing a rainwater
harvesting system.
This could be administered by the parish councils (PC) which would
verify, build out, and approve time-bound rebates from property taxes,
say over three years. The PCs should have a vested interest in promoting
better water management systems throughout the country, since they are
burdened with trucking water during times of drought.
Read more: http://www.jamaicaobserver.com/pfversion/Make-rainwater-harvesting-compulsory_13761729#ixzz2NoWTzDiC
Read more: http://www.jamaicaobserver.com/pfversion/Make-rainwater-harvesting-compulsory_13761729#ixzz2NoWTzDiC