Course Glossary
This shows the specialized terms used in EarthWise Academy. This section contains all the definitions used in the various course glossaries used by each course.
Currently sorted By creation date descending Sort chronologically: By last update | By creation date change to ascending
Natural Organic MatterNatural Organic Matter (NOM) - Organic matter that exists naturally in the water environment.
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National Primary Drinking Water RegulationsNational Primary Drinking Water Regulations (NPDWR) NPDWRs (or primary standards) are legally enforceable standards that apply to public water systems.
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National Pollutant Discharge Elimination SystemNational Pollutant Discharge Elimination System (NPDES)
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N/A Site
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Multiple Service ConnectionThis refers to the condition where a PWS serves many individual buildings (connections), i.e., homes or businesses that use public water.
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MRDLGMRDLG – Maximum Residual Disinfectant Level Goal The unenforceable maximum level of disinfectant added for water treatment for which there is no known risk to human health.
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MRDL
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Monitoring PeriodThe time frame, generally in months, quarters, or years, during which water samples must be collected and tested in accordance with Pa Safe Drinking Water Regulations to determine compliance with applicable MCLs, MRDLs, or treatment techniques
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Monitoring and Reporting ViolationAny violation incurred for failing to monitor and/or report for a regulated parameter specified by the Pa. DEP.
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MLSSMLSS – Mixed Liquor Suspended Solids The concentration of suspended solids (both organic and inorganic) in the mixed liquor of an aeration tank. MLSS is used as a measure of the concentration of microorganisms present. |