referring in detail to the drawings , water is intermittently drawn from at least one recharge means , designated generally as numbers 10 through 15 , conditioned to render it suitable for recharge into at least one recharge means and conveyed to at least one other recharge means . simultaneous with the recharge , water may be withdrawn from the supply means 27 . the water drawn from the supply means is typically purified water , having had the contaminants precipitated therefrom by the microbiological metabolic oxidative process described above . the conditioned water is introduced into a predetermined number of recharge means , ranging from one recharge means to as many recharge means as necessary ; however , it is to be understood that conditioned water is typically simultaneously introduced into less than all of the recharge means utilized in the system . by changing the plurality of recharge means into which conditioned water is introduced , and by alternating the recharge means from which water is withdrawn , the user effectively alternates the purification zone in which contaminants are precipitated . any number of recharge means greater than two may be used in this system , depending upon the size of the purfication system , hydrogeologic conditions , biogeochemical conditions , the concentration of impurities contained in the water , etc . conditioned water may be introduced into the recharge means for a predetermined period , ranging from a few hours to a few days or longer . purified water may be withdrawn through the supply means concurrently with the recharge process through any number of supply means utilized in applicants &# 39 ; invention ; ideally at least one supply means is used therein . however , to effect the purification of ground water in an aquifer where no purified water is intended to be withdrawn , no supply means is required , as shown generally in fig2 . by introducing treated water into the purification system intermittently through at least one recharge means but into less than all of the recharge means , and by withdrawing purified water simultaneously from the nearby adjacent or intervening recharge means , a flow pattern 17 is created and a purification zone 28 for the purification of water is created between such recharge means . unpurified or raw water flows toward the supply means through the purification zone . hence , by flowing through the purification zone , unpurified water is rendered essentially free of the contaminants contained therein and sought to be removed , by the methods previously described . the purification zone 28 is optimally located a sufficient distance from the supply means to prevent clogging or plugging of the supply means with precipitates or contaminants . after introducing conditioned water into a plurality of recharge means , the plurality of recharge means is alternated ; conditioned water is then introduced into a different plurality of recharge means thereby utilizing a different purification zone . by alternating purification zones in this manner , the longevity of the system is enhanced , reducing or eliminating the need for restorative treatment , and enabling the user to continuously withdraw purified water from the supply means . the water fed to the recharge means may consist of conditioned water drawn from at least one other recharge means and if desired also a portion of the purified water drawn from the supply means . by way of example , one supply means surrounded by six ( 6 ) recharge means may be utilized in a circular pattern for the removal of metal ions through the introduction into at least one recharge means of oxygenated water and the withdrawal of water from the remaining recharge means . conveyance means , such as pipes 20 may be utilized to convey water to and from the recharge means , from the supply means , and to and from the conditioning means 21 through the use of selectively placed valves 22 . unconditioned water may be withdrawn from recharge means 11 , 13 and 15 , and conditioned water may be introduced into recharge means 10 , 12 and 14 . after a predetermined period , the pluralities described above may be alternated , whereby unconditioned water would be withdrawn from recharge means 10 , 12 and 14 , and conditioned water introduced into recharge means 11 , 13 and 15 . alternatively , the plurality of recharge means could be varied in a different manner . it is unnecessary to arrange the recharge means symetrically around the supply means ; any configuration may be utilized . where natural geohydrological conditions require that a supply means be extremely deep , applicants &# 39 ; invention may be modified to utilize a deep supply means and a plurality of shallow recharge means . insofar as many aquifers are comprised of several water - bearing layers , separated by impermeable or semi - permeable layers , the water contained in and withdrawn from the deep supply means may be pumped up from the lower - most water - bearing layers and fed to a plurality of shallow recharge means , thereby allowing such water to flow on a higher water - bearing layer , where the filtration and purification process according to applicants &# 39 ; invention is carried out . applicants &# 39 ; invention is useful for and encompasses the purification of ground water contained in and flowing through aquifer as shown in fig2 . if for example , a high concentration of iron and / or manganese is contained in the ground water , conditioning the water by oxygenation or by admixing oxygen - releasing substances in the water , and introducing said conditioned water into the aquifer through at least one recharge means 10 &# 39 ; through 15 &# 39 ; is appropriate , creating flow pattern 17 &# 39 ; and the purification zone 28 &# 39 ;. if a different contaminant is to be removed from the water , treatment of the water to be introduced into the aquifer may include any appropriate chemical or biological component necessary to effect purification . the combination of recharge means 10 &# 39 ; through 15 &# 39 ; chosen for introductin of conditioned water into the aquifer , the amounts of conditioned water introduced into the recharge means , the supply rate for the withdrawal of purified water from the supply means and the rate of extraction from the recharge means will vary within wide limits , as determined by local geohydrological conditions and the needs of the user . in another alternative embodiment ( not shown ) of applicants &# 39 ; invention , the filtration and purification system may be used for the purification of ground water or surface water in a basin configuration , wherein a filter comprised of naturally occurring or man - made material is contained and utilized . for example , soil may be excavated to form a basin - shaped cavity with a mantle surface , and a sealing layer of clay , concrete , plastic , water - resistant cloth or the like may be applied to the mantle surface to form an inner wall . recharge means for the introduction of conditioned water , are placed inside the mantle within the basin , and the basin is filled with a filter material , such as sand . the supply means may be located in the center of the basin ; the recharge means for introducing treated water are arranged between the mantle and the basin center , around the interior of the periphery of the inner wall of the basin , so as to enable the introduction of conditioned water into the purification system through a plurality of the recharge means , extraction of water through at least one recharge means and the continuous withdrawal of purified water through the supply means . such a configuration is ideal for the purification of water collected at sanitary landfill sites . a filter container comprised of steel , plastic , fiberglass or other substance may further be employed instead of a basin . conditioned water is introduced inside the mantle of the filter container through the plurality of recharge means , and purified water is drawn from a supply means in the center of the container . the recharge means are arranged in a predetermined configuration along the periphery of the mantle within the container , wherein the withdrawal of water from at least one of the recharge means during the continuous withdrawal of purified water from supply extraction means creates a circumferential flow pattern , and purification zones as previously described . alternating the recharge means used for recharge with the recharge means used for withdrawal of water in this manner effectively alternates the purification zones utilized for the precipitation of contaminants . the preferred alternative embodiment of applicants &# 39 ; invention encompasses the use of a water treatment apparatus 40 as shown schematically in fig4 in conjunction with the recharge means 50 . the treatment apparatus designated generally as 40 may utilize an extraction means 45 which is inserted into the corresponding recharge means 50 . the recharge means 50 . the recharge may further have a vent 51 if necessary to equalize pressure , or to allow the water level in the recharge means to rise and fall , as well as a recharge pipe 52 for the introduction of treated water into the recharge means when appropriate . the extraction means may further utilize a one - way foot valve , check valve or similar valve 53 to prevent water from descending in the extraction means , in the event that the vacuum or suction in the extraction means is broken or reduced . the extraction means may further contain a vacuum gauge 54 , a suction pump 55 , and a pressure gauge 56 . the suction pump may be replaced by a positive pressure pump ( not shown ) such as a submersible pump which may be located in the recharge means . the pump may be controlled by an on - off switch 57 and a motor starter 58 which are controlled by a signal generated in response to a process variable , such as time , volume or water quality . contained within the treatment apparatus may further be a conditioning means 60 , such as an aerator , pipe , aspirator or eductor , which may draw air or oxygen from an air / oxygen intake means 61 or enable introduction of other beneficial additives into the water for treatment purposes . attached to and in communication with the pipe , aspirator , eductor , etc . may be a conditioning means storage tank ( not shown ) which serves as the supply for chemicals , gases or other beneficial additives which may be introduced into water taken from the recharge means or the supply means , thereby rendering the water &# 34 ; treated &# 34 ; and suitable for introduction into the recharge means . after a portion of the water withdrawn from the extraction means is conditioned by or within the conditioning means , the conditioned water may be introduced into a holding tank 62 . the holding tank may serve as a reaction vessel in that conditioned water may react , become saturated or supersaturated by the chemicals , gas or other beneficial additives introduced into the water over the time period during which the treated water remains in the holding tank . the size of the holding tank may be varied within wide limits to prolong the period during which water is allowed to react with the beneficial agents contained therein prior to introduction into the recharge means . the holding tank may also be ventilated as necessary . exiting from the holding tank may be a surplus conditioned water return 63 , which functions to return surplus treated water to the recharge means . further , there may be an untreated water bypass means 64 which may enable untreated water to bypass the conditioning means and the holding tank . it is possible and within the scope of the applicants &# 39 ; invention to control the return of surplus conditioned water to regulate the holding tank overflow or the water level contained therein . for example , when the withdrawal rate from the holding tank is greater than the return rate to the recharge means , the surplus conditioned water return 63 conveys excess conditioned water back to the recharge means , effectively functioning as an &# 34 ; overflow pipe .&# 34 ; by placing the on - off switches and motor starters of the plurality of recharge means into a centralized programmable system , and by using a common holding tank in a central location , separate from the valves and gauges of any given single water conditioning apparatus , the on - off switches and motor starters corresponding to the plurality of recharge means may be controlled by computer ( not shown ). this enables the use of conveyance pipes and a single heater , air conditioner or other climate control device 70 to regulate the climate surrounding said portions of the apparatus . moreover , this allows for pre - determined automatic withdrawal of water to be conditioned from at least one but less than all recharge means , and concurrent introduction of conditioned water into at least one recharge means , regulated in response to system variable signals , such as time , temperature , water volume , water quality , etc . in this manner the specific plurality of recharge means chosen for withdrawal of water may further be automatically changed and alternated with a different plurality of recharge means , and the recharge means chosen for introduction of treated water into the system can be alternated with recharge means from which untreated water was previously withdrawn . while applicants have described what is believed to be the preferred embodiment of his invention , other alternatives and embodiments will be obvious to those skilled in the art from the teaching herein . hence , the scope of applicants &# 39 ; invention is not to be limited thereby .