Final answer:
One limitation of a reverse osmosis (RO) system is that it produces wastewater. However, this limitation can be minimized by implementing water-saving measures and using the wastewater for other purposes such as irrigation.
Step-by-step explanation:
Reverse osmosis (RO) is a method used to purify water by forcing it through a semipermeable membrane. While it is highly effective at removing impurities, one limitation of a reverse osmosis system is that it produces wastewater. This is because the process requires additional pressure to force water through the membrane, resulting in a portion of the water being discarded as waste. However, this limitation can be minimized by implementing water-saving measures and using the wastewater for other purposes such as irrigation.