Since any water treatment system requires preventive maintenance, either resin recharging in case of softened water, filter tank changes in the case of deionized water, or filter replacement in the case of reverse osmosis water, I highly suggest you first talk to the center’s director and make sure this is being done. If you have a water treatment system that is not being maintained it can do more harm than good, throwing the minerals it was filtering back into the water it was treating. Once you find out the company doing your PM’s, call them up and ask them what kind of water treatment system it is. You might even want to ask them to give you an analysis of your treated and untreated water the next time they come in. Since your detergent dosing ratios are highly dependent on your water quality it is good to know it (no matter what the company who makes your detergent claims, “effective in all water qualities” does not mean you would you use the same amount in hard water that you would use in deionized water).
Since it may take a while to get in touch with the company doing the service on your water system I am going to give you so clues to look for to help you determine what type of water treatment system you have.
If you can find them, check to see what type of piping is supplying water to your W/D, if the piping is copper you are probably only using softened water in your W/D. Deionized and Reverse Osmosis water are highly aggressive and will basically eat right through copper piping. If your water is DI or RO it the pipes it runs through will be PVC
If you can find the water treatment system in your facility try and compare it to the pictures I have supplied here as examples of each treatment modality.
A water softening system usually consists of two components a tank that does the softening and another that contains brine that is used to “regenerate” the resins in the softening tank. Again since softened water is not aggressive the pipes in and out of it will most likely be copper.
A water deionizing system usually consists of more than two filtering tanks one multimedia filter, and a cation and anion filter to remove the positive and negatively charged minerals in the water, these tanks need to be changed on a regular basis and since the resins they contain cannot be recharged on premises. Because pure water is a “universal solvent” the piping exiting a DI system will PVC and not copper, DI water would basically dissolve the copper piping in time, but does not dissolve PVC.
A Reverse Osmosis (also known as high purity water) system usually consists of a pre filter and then multiple filters filled with a coiled membrane that only pure water under “osmotic” pressure can pass through. Minerals and other substances dissolved in the water cannot pass through the pores in these filters they are washed “downstream” with the waste water. Because a smaller amount of “high purity water” is produced to the amount that becomes waste, RO systems normally have a holding tank to contain the “pure water”. As with Deionized water, Reverse Osmosis water is highly aggressive and the piping it passes through is PVC.