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Water Use and Waste Water Management

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Year 11 - Earth & Environmental Science Assignment
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  Eun-Jee Rhee Yr 11 Water Use and Waste Water Management Audit Day Water Meter Reading 1 (29/6/13) 10:30am 3918 | 9306 7 (6/7/13) 11:00am 3923 | 6667 8 (7/7/13) 4:00pm 3924 | 9072 15 (14/7/13) 4:30pm 3929 | 4990 Week Daily Weekly Yearly 1 (Brushed inside) 676.6L 4736.1L 246,277.2L 2 (Brushed outside) 656.0L 4591.8L 238,773.6L DIFFERENCE/WATER SAVED 20.6L 144.2 7503.6L Survey Results After conducting a survey with my family, namely parents, using ‘Ways to Conserve Water’ as a guide, I have summarised with the following results. The Bathroom: We have an AAA shower head installed. Our toilets have only one full flush. Everyone takes an average of 9 minutes to shower. Most people turn off the tap while brushing their teeth and those who shave, do it with an electr ic razor which doesn’t require water.  We have a tap regulator installed, reducing our shower head to expel 12L of water per minute. We always repair any leaking tap washers or toilet cisterns and check regularly for any leakage. The Kitchen: We never use our dishwasher and wash all our dishes by hand. When we wash the dishes, instead of a rinse bucket, we fill the sink with hot soapy water and put our dirty dishes in to soak, and while it’s in there, we scrub off the leftover food particles, drain the water  and rinse the soap off the dishes. Our cold water comes from a filter which we refill every day. The Laundry: Our washing machine is a top loader and because we have a big family, we use it a lot, but to save water, we match our washing machine’s water level with the size of the load to be washed. Our washing machine has a 4 star rating for water efficiency, consuming 102L of water per wash. In the Garden: We do not have a front lawn because we live in a townhouse and we barely have a backyard. Therefore , we don’t treat or condition our gardens at all since we don’t use it  and is hidden from view. Instead, we have pot plants, most of which can survive without any water at all. We rarely wash our car and usually just let the rain clean it, but when we do, we use a bucket /and sponge. We don’t have a pool either.   Ideas    Take shorter showers.    Brush teeth outside of showers.  Eun-Jee Rhee Yr 11    Use a rinse bucket instead of the sink to wash dishes or plug the sink rather than have it running.    Keep cold water in the fridge rather than filling up the filter and keeping it cold, which would use electricity too.    Flush the toilet with a bucket of water, collected from showers.    Installing a rainwater tank.    Redirecting shower water for gardening. Implemented Improvement The improvement I have chosen to implement is to brush my teeth outside of showers rather than let the water run, thus wasting excess water. This improvement is a small change, but judging from the results, I will be able to determine how much water is actually being wasted on something as small as brushing your teeth outside of the shower. Comparing the water usage difference from a week of brushing it inside the shower and brushing it outside will determine how much water I would save weekly and thus, daily and yearly. The benefits of this improvement will be to save water and also to measure the amount of water being wasted, so that it will convince others to implement the same regularity. Report The implemented improvement was to brush teeth outside of showers. Litres of water are wasted from people standing in the running shower while brushing their teeth, when they could be brushing it outside and saving water. A person takes about 1- 3 minutes to brush their teeth and if they’re brushing it in the shower, they could easily use up 50L or more, depending on if they have tap regulators installed, of wasted water. On the first day, I will check the water meter and record. For one week after that time, I will brush my teeth inside the shower and at the end of the week, will check the water meter again at about the same time and record. The next day, I will check the water meter and for one week after that time, I will brush my teeth outside the shower and at the end of the week, will check the water meter again at about the same time and record. Comparing the water usage difference from a week of brushing it inside the shower and brushing it outside will determine how much water I would save weekly and thus, daily and yearly. The benefits of this improvement is that it will save the amount of water used daily, since people shower every day. Every minute even with tap flow regulators, our showerhead expels 12L of water per minute . That’s saving about 24L or more every time you brush your teeth. When people see how much water is being wasted from minor things such as brushing your teeth, it will hopefully convince them to adopt the method of brushing their teeth outside and save money and water in the long run. The drawbacks of this improvement is that some members may not want to participate, however, since it is something as small as brushing teeth outside rather than inside, many will most likely comply. This improvement was only carried out by me, but even that alone shows how much water has already been saved. There are seven members in my family, all taking about 9 minute showers, every day, and if everyone agreed to brush their teeth outside the shower, we would save a dramatic amount of water and money long-term. Also, the drawbacks during the testing of this, is that the water meter readings can change due to many variables such as: other people using water at the same time, more dishes to wash due to family dinners, more usage of the washing machine, etc.  Eun-Jee Rhee Yr 11 The results showed that, theoretically, if implemented, about 21L of water would be saved daily, about 144L saved weekly and 7504L saved yearly, saving more than a week’s worth of used water at the end of each year.
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