75C - PH - RPT ON WATER QUALITY - Laserfiche WebLink

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r i >. The following glossary will help you understand the terms and abbreviations used in the table. ABBREVIATIONS TO EXAMINE TERMS TO EXAMINE Constituents Components or elements found in drinking water. •,m ®o Mandatory health -re fated standards that may Maximum Contaminant Level (MCL) cause health problems in drinking water. The highest level of a contaminant that is allowed in drinking III I. water. Primary MCLs are set as close to the PHGs (or MCLGs) as is /9a, • a . !� • . economically and technologically feasible. Secondary MCLs are set to protect the oclor, taste, and appearance of drinking water. Aesthetic standards (non health- relatecp Maximum Contaminant Level Goal (MCLG) that could cause odor, taste, or appearance or in drinking water. The level of a contaminant in drinking water below which there is no known or expected risk to health, MCI-Gs are set by the USEPA. Maximum Residual Disinfectant Level (MRDL) The highest level of a disinfectant allowed In drinking water. There Information about contaminants that are Is convincing evidence that addition of a disinfectant is necessary monitored but are not currently regulated by for control of microbial contaminants. federal and state health agencies. Maximum Residual Disinfectant Level Goal n t ?T' a r,, .. c r' - m p (MRDLG) The level of a drin king water d isl nfecta at below which there is no known or expected risk to health, MRDLGs do not Information that may also be of interest to reflect die benefits of the use of disinfectants to control microbial our customers. contaminants. Primary Drinking Water Standard (PDWS) ADDITIONAL ABBREVIATIONS The MCLs and MRDLs for contaminants that affect health along AL= Regulatory Action Level with their monitoring and reporting requirements, and water CFU =colony - Forming Units treatment requirements. MFL = Million Fibers per Lifer Public Health Goal (PHG) NA = Not Applicable NC= Not collected The level of a contaminant in drinking water below which there NO =Not Detected is no known or expected risk to health. PHGs are set by the NL= Notification Level California Environmental Protection Agency(Cal /EPA). NR =Not Required Regulatory Action Level Ns= No standard NTII = Nephelometric Turbidity Units The concentration of a contaminant which, if exceeded, triggers mrem /year= milllrems per year (a measure of radiation treatment or other requirements that a water system must follow. absorbed by the body) Treatment Technique (TT) p(i/L= picocuries per liter is measure of radioactivity) ppb= parts per billion, or min ograms per liter (pg /t.) A required process intended to reduce the level of a contaminant spin =parts per million, or milligrams per liter trig/L) in drinking water. ppq =parts per quadrillion, or plcograms per liter opt= parts per trillion, or nanograms per liter ME SANTA ANA WATER OUALITY REPORT EXHIBIT 5 75C -50