General QA 1
In a renovation project, the plumbing engineer finds that the flow rates of Water Closets and Lavatory Faucets are much higher when compared with baseline. The project owner is cost-conscious and doesn’t appreciate major expenditure on renovation. Which of the following options are the most appropriate? (Choose 2)
a) Installing low flow aerators
b) Using treated grey water for toilets
c) Retrofitting flush valves with efficient ones
d) Installing new faucets compliant to EPAct 1992
e) Using water sense certified toilets and faucets.
a & c
In existing buildings, instead of replacing plumbing fixtures the following cost-effective options can be preferred:
- Consider retrofitting existing faucets, showers with water efficient aerators and shower heads.
- Consider retrofitting older leaky flush valves with efficient ones.
- Installing low flow aerators- Correct option. Aerators are cost-effective and plays vital role in reducing indoor water consumption.
- Using treated grey water for toilets – Not correct option. Using treated grey water for toilets will reduce potable water consumption, but it requires higher infrastructure cost for water treatment plant.
- Retrofitting flush valves with efficient ones- Correct option.
- Installing new faucets compliant to EPAct 1992: Not correct option. Installing new faucets are not cost efficient. Also faucets compliant with EPAct 1992 will not meet LEED requirements. The flow rates are to be better to comply with LEED.
- Using water sense certified toilets and faucets- Not correct option. Using water sense certified toilets and faucets will be expensive.