Earth Friendly: Question: Are your RDWS-Gold Packages environmentally friendly? Answer: Yes, These systems do not require electricity, no brine water discharge or backwash water, no control valve, no drainline, no waste water, no salt, saves water !Click Here... Featured Filters: City Water Filters: Gold Package-8... Gold Package-9... Gold Package-10... Gold Package-12... Certified UV Water Treatment Series: Platinum Package-8... Platinum Package-9... Platinum Package-10... Well Water Filters: Iron Max... Iron Max-FX... Iron Max-UV...