Water Operator Certification exam 2023 with 100% correct answers

What is MCL? Maximum Contaminent Level (MCL) A public water system is any system that serves a population greater that or equal to ? 15 services connections or 25 people regulary What is the Maximum total chlorine residual allowed by the Disinfectant-Disinfection By-Prouducts Rule 4 mg/l What type of contaminant is Iron? Secondary Which Primary Contaminant is sometimes added to water supplies to prevent tooth decay? Fluoride The Failure of a public water system to comply with the NM Drinking Water Regulations must be reported to NMED within? 48 hours The MCl for Total Trihalomethanes is? 0.1mg/l SDWA sampling results must be reported to ? New Mexico Enviroment Department (NMED) Ground water systems must sample for inorganic chemicals every? (3) Three Years The SDWA Compliance Cycle for Standardized Monitoring Rule consists of Three? Compliance Periods How many bacterilogical samples(BAC-T) must be taken every month before a system is allowed to have TWO positive samples without violating the drinking water standard? 40 or less then 5% on monthly samples What are the action levels for Lead and Copper? 0.015 mg/l Lead 1.3 mg/l Copper If Bacteriological retakes are done this month what is the minimum number of samples that must be turned in next month? 5 samples if a 3-log removal is required for Giardia Lamblia what percentage of organisms can survive and still meet requirements ? 0.1 % which Primary Inorganic Contaminant poses an immediate health risk? Nitrates Why do Nitrates poses immediate health risk? Pregnant mothers and infants under 18 months can develop a condition known as Blue Baby Syndrome