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TABLE 3—DETECTION OF CONTAMINANTS WTITI A MEMARY DRINKLNG WATER STANDARD <br /> 'i Chemical or Constituent Sample. Level Range of MCL PIRG <br /> Ty real Source of Contaminant <br /> (MCLG)RDLGj p <br /> (and reporting units) Date Detections .Detected jMRDL] !I I <br /> M <br /> ----4 <br /> Nitrate as Nitrogen(ppm) 2018 8 8-9 10 10 IRunoff and leaching from fertilizer use; <br /> leaching from septic tanks and sewage; <br /> lerosion of natural deposits <br /> Gross Alpha(pCi/1) 12/0516 1. 3 i 15 i (0) (Erosion of natural deposits <br /> Arsenic(ppb) 0-63-16 4 <br /> 10 1.0()4 Erosion of natural deposits:runoff from <br /> — <br /> ;orchards; <br /> glass and electronics <br /> production wastes <br /> *Any violation of an MCL or AL is asterisked Additional information regarding the violation is provided below. <br /> Additional General Information on Drinking Water <br /> Drinking water, including bottled water.may reasonably be expected to contain at least small amounts of some contaminants. The <br /> presence of contaminants does not necessarily indicate that the water poses a health risk-More information about contaminants and <br /> potential health effects can be obtained by calling the USEPA*s Safe Drinking Water Hotline(1-800-426-4791). <br /> Some people may be more vulnerable to contaminants in drinking water than the general population- Immuno-compromised persons <br /> such as persons with cancer undergoing chemotherapy,persons who have undergone organ transplants,people with HIV/AIDS Or <br /> other immune system disorders,some elderly,and infants can be particularly at risk from infections.These people should seek advice <br /> about drinking water from their health care providers.USEPA/Centers for Disease Control(CDC)guidelines on appropriate means to <br /> lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline. <br /> Nitrate as Nitrogen in drinking water at levels above 10 mvJL is a health risk for infants of less than six months of age. Such nitrate <br /> levels in drinking water can interfere with the capacity of the inhuit's blood to carry oxygen.resulting in serious illness;sYMPTOTTIS <br /> include shortness of breath and blueness of the skin. Nitrate-N levels above 10 ing/L may also affect the ability of the blood to carry <br /> oxygen in other individuals,such as pregnant women and those with specific enzyme deficiencies. If you are caring for an infant.or <br /> you are pregnant,you should ask-advice from your health cam provider. <br /> Vulnerability Assessment Summary <br /> A source water assessment was conducted for the well of the Manteca USD-New Haven School water system in August of 2001. The <br /> source is considered most vulnerable to the following activities not associated with any detected contaminants: CTOPS,irrigated <br /> (berries,hops.mint,orchards,sod,greenhouses). For more information regarding the assessment summary.contact: Aaron Bowers at <br /> Manteca Unified School District <br /> 2018 SN'S CCR Form Revised Feb 2019 <br />