To calculate the overall star rating and percentage breakdown by star, we do not use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Great product not sure yet on the filtration. However, the pressure is for real if you do not have control of the amount of water that is sent through it stings because the pressure is too high but it was enough water to cover my large body so that was nice. My kids won’t be using it.