It seems that the ever increasing water restrictions associated with the water level in w/c;s in the uk caused by the enforcement on regulations by the EU is causing major problems with blockages in our toilets in Scotland.
It is very frustrating for us in Scotland where we have an abundance of water, but it seems our hands are tied. The best advice we can give our customers is use less toilet paper, and flush more than once on each visit.
It seems this has become a world wide problem ( see extraction from a USA website below).
An Update on Low-Flush Toilets By Mike McClintock
October 14, 1999
Homeowners have talked about the problem of low-flush toilets since 1992, when the U.S. Department of Energy mandated them as a water conservation measure. The units are about the same size as older designs but use about half the water–1.6 gallons instead of 3.5 gallons per flush–and consequently have less flushing power. It’s not a common subject in public conversations, but in private, the general consensus has been that low-flush units are one of the most troublesome components in new and remodeled homes.
Those opinions have been confirmed by a nationwide survey of 1,270 builders and homeowners conducted this summer by the National Association of Home Builders Research Center. It found that roughly four out of five people experienced problems with low-flush units in the past year. A majority of the builders reported problems from more than one of their clients, and many reported hundreds of problems. Most builders surveyed also said that they receive more callbacks on low-flush toilets than on anything else.
There are four common complaints: multiple flushes are needed to clear solids from the bowls; residue remains in the bowl even after multiple flushes; the units clog easily; and they require more maintenance than 3.5-gallon models and cause more damage when they overflow. And unlike other problems that turn up even in well-built houses, most builders and homeowners say that the toilet trouble can’t be fixed-but not for lack of trying.
In the typical scenario, homeowners jiggle the handle, try to increase the flow at the water supply valve and attempt other fixes that have no effect. A few contact toilet manufacturers about the problem. Most complain to their builder and point to inadequate water pressure or substandard plumbing work, and characterize the fixtures as inferior or cut-rate products as evidenced by poor performance.
Builders report that most clients do not accept the explanation that the toilets are working, and can’t be replaced with ones that use more water and work better because they are against the law.