Surprisingly to most, toilets are one of the biggest users of water in the home. They are literally flushing away dollars every time they are flushed. Because of this, a low-flow toilet can be a valuable commodity to have for those looking to save money.
In 1992 the United States government mandated that any toilet sold from them on had to be of the low-flow variety. That is to say that they cannot use more than 1.6 gallons of water per flush. Prior to this, typical minimums for flushing were approximately 3.5 gallons. In other words, there was a lot of water being wasted prior to these law mandates.
Those who are living in old homes often do not have a low flush toilet. It may be the case that their toilet has been in the home since before 1992. If that is the case, then their toilet is probably flushing away more and more money. Both the federal and local governments have been trying to get people in older homes to consider purchasing a newer low-flow toilet for their home. It is the only way to make sure that these individuals are keeping with the laws that have been created for everyone else as well.
Their are rebates offered to those who may not be able to afford a new low-flow toilet. Those who need to take advantage of these should do so as soon as possible. It is highly important for their finances to do so. The low-flow toilets do the job they are supposed to do. The technology has been adapted enough to allow the same amount of flush despite using a smaller amount of water. This is why the government has made this their standard for toilets at this point. This is why low-flow toilets are just as good as the older fashioned toilets.