We have city water and we were wanting something to improve the quality of our drinking and cooking water in the kitchen without causing a major disruption to the kitchen.  My husband was able to install it without too much swearing, meaning that if I did not have him I would have needed to hire a professional.  I like that the system can last for about 6 months without needing a new filter and it has a sensor on it when it gets low.  Though, you do need batteries for the sensor.  I have noticed that our tap water is better.  Overall, a really good system for your kitchen.