Do water filters improve the quality of potable water?

Chemical and microbiological assessment of house-filtered water produced by household water filtration systems

“…Using the house water penta filter had a significant (P ≤ 0.05) positive effect on the chloride content in the filtered water (Figure 6). These results are in agreement with those reported by Królak et al [3].…”

“…EC values significantly (P ≤ 0.05) and highly decreased in the filtered water obtained from the house water penta filters. The EC values are in agreement with those found by Al-Oud et al [24] and Królak et al [3].…”

“…It is of interest to report that there were significant differences (p ≤ 0.05) between TH values in the filtered water resulted from the penta filters and mono and di filters. These results are in agreement with those obtained by Jaafari-Ashkavandi and Kheirmand [25] and Królak et al [3]. Generally, TH of the filtered water withdrawn from different types of the house water filters was within the permissible limits (500 mg/l) required by Egyptian Standards [22].…”

“…Reverse osmosis is a physicochemical process that is highly practical for removing nitrate [15]. These results are in agreement with those reported by Królak et al [3]. JECFA [26] and Commission Regulation [27] established the Acceptable Daily Intake of NO 3 ranged from 0 to 3.7 mg/kg body weight.…”

“…Therefore, POU drinking water treatment is rising quickly due to the high risk of exposure to various contaminants in drinking water [2]. Household water filtration systems have recently been used in many houses to enhance the potable water quality [3]. Home water filters have become a new market that has been discovered by manufacturers to improve drinking water quality and remove contaminants from water [4].…”