The byproducts would come from 600,000 gallons of radioactive waste.
To save money in the late 1970's, officials decided to lower its capacity from 225 million gallons.
These were filled with water from the stream, and each of them might hold from four to five gallons.
They may carry anywhere from 1500 to 7500 gallons of water.
Exhibits range in size and capacity from about 5,000 to 350,000 gallons.
Flow rates from 20 to 70 gallons a minute have been tested.
These heads cost $4 to $7 each and can cut usage in half, from 5 to 2.5 gallons a minute.
The solar heater is the main reason his oil use dropped from 1,050 to 700 gallons a year.
However, according to official forecasts water demand in Singapore is expected to double from 380 to 760 million gallons per day between 2010 and 2060.
The change has cut water use per toilet from 56 gallons to about 13 a day.
