Pool Water Cleaning and Purification. Don’t drain your pool! Purify I with our Reverse Osmosis Technology. Reverse Osmosis mobile filtration is the best way to clean your pool water without draining it. Our pool water filtration process takes less than half the time of a traditional drain and refill. Get fresh water the same day! Our pool water filtration process is Eco-friendly conserving nearly 85% of the water already in the swimming pool. Our pool water filtration process removes calcium hardness and total dissolved solids leaving your pool with sparkling clear water. Our pool water filtration process reduces waterborne diseases reducing the use of harsh chemicals while providing healthier pool water. Our pool water filtration process reduces waterborne diseases reducing the use of harsh chemicals while providing healthier pool water. Monarch Purification is a small, privately owned company that provides mobile water purification services to the greater Metro Phoenix area including Anthem, Scottsdale, Cave Creek, Carefree, Phoenix, Tempe, Chandler, Gilbert, Glendale and more! Conserve your pool water with our reverse osmosis filtration process.