Particles produced by natural weathering of minerals. Examples include sand, salt, iron, calcium salts and other mineral materials.

• (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)

Waste material such as sand, salt, iron, calcium and other mineral materials that are only slightly affected by the action of organisms in wastewater treatment. Inorganic wastes are chemical substances of mineral origin; whereas organic wastes are chemical substances usually of animal or plant origin.

• (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)

Interim Enhanced Surface Water Treatment Rule – (IESWTR)

• (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)

Any PWS with 3 or less monthly or one quarterly monitoring violation during a 12 month period.

• (TCR01) Total Coliform Rule – Overview (1424)
• (TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)
• (TCR03) Total Coliform Rule – Maintaining Compliance (1426)

An atom or molecule with an electrical charge.

• (COA01) Coagulation – Part 1: The Chemistry of Coagulation (1248)
• (COA02) Coagulation – Part 2: Coagulation Chemicals (1249)

A process causing a movement of electrons within a compound (dissociation of ions) which subsequently causes metals to dissolve.

• (LCR10) Lead and Copper Rule — Basics (1423)