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nuiN <br /> SA NsJ OA Q U I N Environmental Health Department <br /> COUNTY <br /> ��►� Jasjit Kang, REHS, Director <br /> cq�iFOF� Greatness grows here. Muniappa Naidu,REHS,Assistant Director <br /> PROGRAM COORDINATORS <br /> Jeff Carruesco, REHS,RDI <br /> Willy Ng,REHS <br /> Steven Shih, REHS <br /> Elena Manzo, REHS <br /> Natalia Subbotnikova, REHS <br /> WELL WATER TEST RESULTS <br /> March 2, 2026 <br /> MICHAEL A & MANDY SERRANO <br /> 10499 S. MANTHEY ROAD, <br /> LATHROP <br /> Location: 10499 S. Manthey Road, Lathrop CA 95330 <br /> Sampling Date: January 15, 2026 <br /> Record ID: WP2501377 <br /> The San Joaquin County Environmental Health Department (EHD) requires well sampling as part of the <br /> permitting process for any new or replacement domestic well. San Joaquin County Well Standards <br /> section 9-9.2.1* states "To determine quality of water produced by a new water well, it shall be sampled <br /> by the EHD for bacteriological and chemical analysis after development, the installation of the well pump, <br /> and disinfection." The cost of sampling was included with the well permit issuance. <br /> We have sampled your new well and have received your results. Your water sample was analyzed by <br /> FGL Stockton Laboratory, a state certified lab. <br /> The well water results have FAILED the bacteriological (Coliform/E-Coli), established criteria. <br /> Contaminant Result MCL** <br /> TOTAL COLIFORM PRESENT ABSENT <br /> E. Coli PRESENT ABSENT <br /> The well water PASSED the criteria for the other analyses: General Mineral and Nitrates. <br /> For more information and possible health effects, please refer to the attachments along with the full <br /> analytical results. If you have any questions, you may contact Sastina Thammavongsa, Registered <br /> Environmental Health Specialist, at (209) 616-3068 or email sthammavongsa@sjgov.org. <br /> AO �z ` <br /> Steven Shih, REHS <br /> Program Coordinator <br /> *As authorized by San Joaquin County Ordinance code section 9-1115.6 <br /> **MCL: The maximum contaminant level is the highest level of contaminant considered acceptable for <br /> potable water. <br /> 1868 E. Hazelton Avenue I Stockton, California 95205 1 T 209 468-3420 1 F 209 468-3877 1 www.sjgov.org/ehd <br />