It may pose a health risk when the gas is released from water into air, as occurs during showering, bathing, or washing dishes and clothes. Radon gas released from drinking water is a relatively small part of the total radon in air. There is no federal regulation for radon levels in drinking water at present. The following constituents were detected in the most recent sampling of one or more of the 22 wells in service during 1999 or the surface water which was used as a source of drinking water for the system in 1999. Regulations allow for a representative number of the wells to be sampled each year, on a rotating basis.
Regulations also allow for monitoring of some constituents less frequently than once a year.
Analysis was performed for many other constituents that were not detected and are therefore not listed. Feel free to contact the Stockton Municipal Utilities Department for a complete list of analyses and results. The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow. A required process intended to reduce the level of a contaminant in drinking water. The highest level of a contaminant that is allowed in drinking water.