Because tap water often does not meet regulatory requirements in its sanitary and chemical indicators, an increasing part of the population prefers to use spring water as an alternative source of drinking water. However, today springs can also be subject to significant pollution. In this regard, the aim of the work was to assess the possibility of using household equipment for the purification of tap and spring water and to check the filter resource specified by the manufacturer. The paper presents data on monitoring the quality of tap and spring water before and after treatment using household equipment. Water quality control was carried out according to 25 indicators. Among them are composite, metal compounds and some inorganic substances. We tested samples of tap and spring water in Ivanovo city, which had undergone additional treatment using filters of the most popular trademarks. We used devices based on different principles of operation: treatment with the use of jug-type filters ―Aquaphor‖ and ―Barrier‖ based on adsorption treatment and the installation ―Aquaphor Osmo Pro‖ based on the reverse osmosis method. With the help of the filter jug and replaceable modules ―Aquaphor A5‖, ―Aquaphor A6‖ 350 liters of spring water were filtered, and with the help of the filters ―Aquaphor B100-8‖ and ―Barrier Standard‖ 350 liters of tap water were filtered. The results of the chemical analysis of the initial samples of spring water showed an excess of the total hardness (1.37 MPC) and the index of the iron compound (1.08 MPC) in comparison with the MPC. The results of the chemical analysis of the initial samples of tap water also showed an excess of the value of the iron compound (1.04 MPC). The greatest degree of water purification is achieved when using an installation based on reverse osmosis, namely ―Aquaphor Osmo Pro‖ (90 %). The degree of post-treatment of tap water using the ―Aquaphor B100-8‖ sorption module averaged 38 %, and with the ―Barrier Standard‖ cassette 30 %. The average cleaning degree of the Aquaphor A6 filter was 62 %, and the Aquaphor A5 filter was 32 %. In the work, the magnitude of the potential danger from the use of this water was assessed. With the constant use of spring and tap water of this quality, there is a possibility of hypertension, as well as diseases such as coronary heart disease and chronic gastritis. The work estimated the probable damage to the health of an individual from drinking water of this quality. Based on the criteria for the acceptability of damages, the damage caused by this risk can be characterized as minimal and low. Hence: 1) assessment of the magnitude of risks and associated damages showed that these values are small and lie in the area of low damages; 2) resource of filters based on sorption water purification does not meet the manufacturers‘ indications. On average, the degree of purification is less than 50%, and is produced when filtering 150-200 liters of water; 3) the best water purification device in this study was the ―Aquaphor Osmo Pro‖ filter based on the reverse osmosis method, the purification degree of which was 90%.