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2. Low-flow fixtures - Wikipedia

   en.wikipedia.org/wiki/Low-flow_fixtures

   Kitchen and bathroom faucets were limited to a flow rate of 2.2 gpm (gallons per minute) at 60 psi, and residential shower heads were limited to a flowrate of 2.5 gpm at 80 psi. [ 3 ] In response to an increasing number of water shortages and increased water utility rates there has been recent legislation by many states leading the way in water ...

3. Cost pool - Wikipedia

   en.wikipedia.org/wiki/Cost_pool

   Cost pools is an accounting term that refers to groups of accounts serving to express the cost of goods and service allocatable within a business or manufacturing organization. [1] The principle behind the pool is to correlate direct and indirect costs with a specified cost driver, so to find out the total sum of expenses related to the ...

4. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   In the United Kingdom the professional body is the Chartered Institute of Plumbing and Heating Engineering (educational charity status) and it is true that the trade still remains virtually ungoverned; [49] there are no systems in place to monitor or control the activities of unqualified plumbers or those home owners who choose to undertake ...

5. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   To raise 230 L (60 US gal) of water from 10 °C (50 °F) to 50 °C (122 °F) at 90% efficiency requires 60 × 8.3 × (122 − 50) × 1.11 = 39,840 BTU. A 46 kW (157,000 BTU/h) heater, as might exist in a tankless heater, would take about 15 minutes to do this. At $1 per therm, the cost of the gas would be about 40 cents. In comparison, a ...

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7. News, Politics, Sports, Mail & Latest Headlines - AOL.com

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

8. Rapid sand filter - Wikipedia

   en.wikipedia.org/wiki/Rapid_sand_filter

   Rapid sand filters were first developed in the 1890s, and improved designs were developed by the 1920s. [2] The first modern rapid sand filtration plant was designed and built by George W. Fuller in Little Falls, New Jersey. [3]

9. Solar water heating - Wikipedia

   en.wikipedia.org/wiki/Solar_water_heating

   Costs and payback periods for residential SWH systems with savings of 200 kWh/month (using 2010 data), ex maintenance costs, subsidies and installation costs Country Curr­ency System cost Subsidy(%) Effective cost Electricity cost/kWh Electricity savings/month Payback period(y) Brazil: BRL: 2500 [54] 0: 2500: 0.25: 50: 4.2 South Africa: ZAR ...