SpringHouse Ecotech 7 filter system

Question: bought a house with a 7 filter system…only label says springhouse and ecotech….what is this? where do i get replacement cartridges for it….does it also have to have a water softener inline with it? what is the electric plug on one of the cartridges do??
Answer:
We found the Users Manual for the system that is installed in your home and it can be found at http://www.ecoquestintl.com/ownersmanuals_web/SpringHouseOM.pdf.
The plug appears to be for Ultra-Violet UV water filtration. UV Filtration is used to kill any bacteria present in water. They do not seem to make any claims to the effectivness of their system on bacteria and looking at the diagram of the the filter flow, it looks like the UV system may have some flaws. UV light can be blocked by larger particles in water. Since the filtration appears to have a 20 micron filter prior to the UV stage, any particles under 20 microns can enter the UV chamber and effectively protect bacteria by being between the UV light source and the bacteria. It seems like a better design would have the 1 micron carbon block filter prior to the UV chamber to remove all particles greater than 1 micron in size which would minimize the shadowing effect. Do not use this filter system with water that has been deemed unsafe for consumption. This system does not have a softener built in. If you have hard water, then you would need a seperate water softener to solve that problem. Replacement cartridges can be found from the manufacturer. Depening on the size of the cartridge, you may be able to use any brand of filter that meet the specifications..