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October 6, 2021 Lab ID :STK2153047-001 <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 />