Mountain House Community Services District

Maximum Poison Level (MCL): The best level of a poison that is allowed in drinking water. Primary MCLs are set seeing that close to the PHGs (or MCLGs) as is monetarily and technologically possible. Secondary MCLs are set to protect the odor, taste, and look of drinking water. Optimum Contaminant Level Aim (MCLG): The level of a contaminant in moving water below which there is not any known or envisioned risk to well being. MCLGs are established by the U. T. Environmental Protection Agency (USEPA). Public welfare Goal (PNG): The degree of a contaminant in drinking water below which in turn there is no known or perhaps expected risk to health. PSG's happen to be set by the Cal Environmental Protection Agency. Maximum Leftover Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water. There is persuasive evidence that the addition of a disinfectant is important for the control of microbes contaminants. Maximum Leftover Disinfectant Level Aim (MRDLG): The level of a drinking water disinfectant under which there is no well-known or expected risk to health. MRDLGs do not reflect some great benefits of the use of disinfectants to regulate microbial contaminants. Major Drinking Water Standards (PDWS): MCLs and MRDLs for contaminants that affect health Extra Drinking Water Standards (SDWS): MCLs for impurities that affect preference, odor, or overall look of the drinking water. Impurities with SDWSs tend not to affect the health on the MCL levels. Treatment Technique (TT): A required process designed to reduce the level of a contaminant in moving water. Regulatory Action Level (AL): The attention of a contaminant which in turn, if exceeded, causes treatment or various other requirements that a normal water system must follow. Diversities and Exemptions: Express Board permission to exceed an MCL or not conform to a treatment technique beneath certain conditions. Level 1 Assessment: A good 1 assessment is known as a study of the normal water system to identify probable problems and identify (if possible) how come total coliform bacterias have been found in each of our water systems. Level 2 Assessment: A good 2 assessment is a detailed study in the water system to distinguish potential problems and determine (if possible) why an At the. coli MCL breach has occurred and why total coliform bacteria have been seen in our water program in multiple situations. ND: not noticeable at testing limit ppm: parts every million or mg per liter (mg/L) ppb: parts every billion or micrograms per liter (µg/L) ppt: parts every trillion or nanograms per liter (ng/L).

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