Less water will now be needed whileyou use the toilet. The US government has passed a law restrictingtoilet flushes to a maximum of 1.6gallons (about 7 .3Iitres} per flush.Eljer Industries Inc has come upwith new models that depend ongravity to flow away the wastes.Using less water implies applyingextra pressure and this, in turn,makes flushing a noisy business.Eljer plans to introduce highlyadvanced loos that use rim jets and a0.2 horsepower electric motor.Experts estimate that a family offour can save about 19,000 gallons(about 85,000 litres) yearly by usingthese efficient low-flow models.