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.
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Naturally occurring radiological contaminants including gross alpha, radium-226, radium-228, and uranium.
Natural Organic Matter
Natural Organic Matter (NOM) - Organic matter that exists naturally in the water environment.
National Primary Drinking Water Regulations
National Primary Drinking Water Regulations (NPDWR)
NPDWRs (or primary standards) are legally enforceable standards that apply to public water systems.
National Pollutant Discharge Elimination System
National Pollutant Discharge Elimination System (NPDES)
Multiple Service Connection
This refers to the condition where a PWS serves many individual buildings (connections), i.e., homes or businesses that use public water.
MRDLG – 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.
The 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
Monitoring and Reporting Violation
Any violation incurred for failing to monitor and/or report for a regulated parameter specified by the Pa. DEP.