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May 18, 2021 Lab ID :STK2136229-001 <br /> San Joaquin Co. Environmental Health Dep Description : Wellhead <br /> Drinking Water Interpretation <br /> MCL: The maximum level at which a constituent may be present and be considered <br /> acceptable for potability or aesthetics. <br /> Primary: Items listed as primary are regulated because of health concerns. If there is a <br /> failure for a primary constituent treatment is normally required. <br /> Secondary: Items listed as secondary are regulated because they may adversely affect the <br /> taste,odor or appearance of drinking water. They are not directly health related. <br /> If there is a failure for a secondary constituent on a small public water system it is <br /> best to consult your regulator to determine if treatment is required. A secondary <br /> constituent failure for a private water system does not require treatment. <br /> However, the owner may wish to treat the water in order to improve the quality. <br /> Treatment: If your water requires treatment we suggest that you contact a qualified water <br /> treatment company. They are normally listed in the yellow pages under the <br /> following topics: <br /> Water Purification & Filtration Equipment <br /> Water Softening & Conditioning Equipment <br /> Water Treatment Equipment <br /> Page 5 of 9 <br />