Reverse osmosis may not always be the most effective solution for receiving clean water in your home however. Water purification systems that use reverse osmosis may oftentimes be quite expensive to install due to the high pressures they need to produce in order to effectively clean water, and depending on how many chemicals are preexisting in your water, you will often have to replace the filters as they start to break down and deteriorate as allowing them to become too contaminated themselves would defeat the purpose.