Friday, May 7, 2021, 6:44 AM
Site: Pa. DEP Operator eLearning Center
Course: Pa. DEP Operator eLearning Center (Home)
Glossary: Course Glossary
M

M Sample

Sample collected from the location in the distribution system with the maximum residence time.

  • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
  • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
  • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
  • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
  • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)

 

M/DBP

M/DBP – Microbial/Disinfectants and Disinfection Byproduct

  • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)(
  • DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
  • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)

M/R

Monitoring and Reporting

  • (DBP01) DBP Rule – Overview (1282)
  • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
  • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
  • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
  • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
  • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)

Mandatory Health Effects Language

Specific health effects language required for primary MCL or MRDL violation, treatment technique violations and violation of the condition of a variance or exemption.

  • (PNR10) Public Notification – An Introduction for NCWSs (2332)
  • (PNR11) Public Notification – Violations and Tiers for NCWSs (2333)

Maximum Contaminant Level

  1. Maximum Contaminant Level (MCL)
    • (CCR01)Consumer Confidence Report (CCR) Overview (2338)
    • (DBP01) DBP Rule – Overview (1282)
    • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
    • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
    • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
    • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
    • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)
    • (DBP20) DBP Rule Monitoring and Reporting for PWSs Using Chlorine Dioxide (1278)
    • (DBP30) DBP Rule Monitoring and Reporting Requirements for PWSs Using Ozone (1279)
    • (DBP40) Enhanced Coagulation – Basics (1280)
    • (LCR11) LCR – Initial Planning, Monitoring and Reporting (1488)
    • (PNR01) Public Notification – An Introduction for NCWSs (2332)
    • (RAD01) Radionuclide Rule – Initial Monitoring and Reporting (1503)
  2. The highest amount of a contaminant that the EPA allows which helps ensure that drinking water does not pose either a short-term or long-term health risk. Unless otherwise specified, MCLs are defined in milligrams per liter (parts per million).
    • (LCR10) Lead and Copper Rule — Basics (1423)
    • (TCR01) Total Coliform Rule – Overview (1424)
    • (TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)
    • (TCR03) Total Coliform Rule – Maintaining Compliance (1426)

Maximum Contaminant Level Goal

Maximum Contaminant Level Goal (MCLG)

The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

  • (CCR01)Consumer Confidence Report (CCR) Overview (2338)

Maximum Residence

That area of the distribution system where the water has the longest standing time and the longest contact time with a chemical disinfectant.

diagram of a water system

  • (DBP01) DBP Rule – Overview (1282)
  • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
  • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
  • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
  • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)
  • (DBP30) DBP Rule Monitoring and Reporting Requirements for PWSs Using Ozone (1279)
  • (DBP40) Enhanced Coagulation – Basics (1280)
  • (LCR10) Lead and Copper Rule – Basics (1423)
  • (LCR11) LCR – Initial Planning, Monitoring and Reporting (1488)
  • (TCR01) Total Coliform Rule – Overview (1424)
  • (TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)
  • (TCR03) Total Coliform Rule – Maintaining Compliance (1426)

Maximum Residual Disinfectant Level

  1. Maximum Residual Disinfectant Level (MRDL)
    • (DBP01) DBP Rule – Overview (1282)
    • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
    • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)
    • (DBP30) DBP Rule – Monitoring and Reporting Requirements for PWSs Using Ozone (1279)
    • (PNR01) Public Notification – An Introduction for NCWSs (2332)
  2. The maximum permissible level of a disinfectant added for water treatment that may not be exceeded at the consumer's tap without an unacceptable possibility of adverse health effects.
    • (CCR01)Consumer Confidence Report (CCR) Overview (2338)
    • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
    • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
    • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
    • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
    • (DBP20) DBP Rule Monitoring and Reporting for PWSs Using Chlorine Dioxide (1278)
    • (PNR11) Public Notification – Violations and Tiers for NCWSs (2333)

MCL

  1. MCL - Maximum Contaminant Level
    The maximum permissible level of a contaminant in water that is delivered to a user of a public water system.
    • (CCR01)Consumer Confidence Report (CCR) Overview (2338)
    • (DBP01) DBP Rule – Overview (1282)
    • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
    • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
    • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
    • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
    • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)
    • (DBP20) DBP Rule Monitoring and Reporting for PWSs Using Chlorine Dioxide (1278)
    • (DBP30) DBP Rule Monitoring and Reporting Requirements for PWSs Using Ozone (1279)
    • (DBP40) Enhanced Coagulation – Basics (1280)
    • (LCR11) LCR – Initial Planning, Monitoring and Reporting (1488)
    • (PNR01) Public Notification – An Introduction for NCWSs (2332)
    • (RAD01) Radionuclide Rule – Initial Monitoring and Reporting (1503)
  2. The highest amount of a contaminant that the EPA allows which helps ensure that drinking water does not pose either a short-term or long-term health risk. Unless otherwise specified, MCLs are defined in milligrams per liter (parts per million).
    • (LCR10) Lead and Copper Rule — Basics (1423)
    • (TCR01) Total Coliform Rule – Overview (1424)
    • (TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)
    • (TCR03) Total Coliform Rule – Maintaining Compliance (1426)

MCLG

MCLG – Maximum Contaminant Level Goal

The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

  • (CCR01)Consumer Confidence Report (CCR) Overview (2338)