CWEA GRADE 4 TEST - WASTEWATER TREATMENT OPERATOR CERTIFICATION– REAL EXAM QUESTIONS & VERIFIED ANSWERS – PASS FIRST ATTEMPT GUARANTEED – BRAND NEW 2026 UPDATE!!!!!

AA - ANSWER atomic absorption



AC - ANSWER power alternating current



ac - ANSWER acre



AF - ANSWER acre-foot (feet)



AFY - ANSWER acre-foot per year



AMSA - ANSWER Association of Metropolitan Sewerage

Agencies



ANSI - ANSWER American National Standards Institute



APHA - ANSWER American Public Health Association



AS - ANSWER activated sludge



ASCE - ANSWER American Society of Civil Engineers



ASME - ANSWER American Society of Mechanical

Engineers

1

,ASTM - ANSWER American Society for Testing and

Materials



AWT - ANSWER advanced wastewater treatment



AWWA - ANSWER American Water Works Association



BECP - ANSWER Business Emergency and

Contingency Plan



BNR - ANSWER biological nutrient removal



BOD5 - ANSWER biochemical oxygen demand after

5 days



BTU - ANSWER British thermal unit



C - ANSWER Celsius



Cal-OSHA - ANSWER California Occupational Safety and

Health Act



Cal-EPA - ANSWER California Environmental Protection

Administration



CBOD - ANSWER carbonaceous biochemical oxygen


2

, demand



CCE - ANSWER carbon chloroform extract



CCR - ANSWER California Code of Regulations



cf - ANSWER cubic feet (foot)



CFR - ANSWER Code of Federal Regulations



cfs - ANSWER cubic feet per second



CH4 - ANSWER Methane



CIU

Categorical Industrial User

CIU - ANSWER Categorical Industrial User



CM - ANSWER common mode



CMOM - ANSWER Capacity Management, Operations,

and Maintenance



COD - ANSWER chemical oxygen demand



CPU - ANSWER central processing unit




3