IA Water Operator study plan
IA Water Operator · Give each week a clear focus.
8 weeks · About 7 hours per week
Water Treatment
Sketch the full treatment train from intake to finished-water storage and label each unit process with its primary contaminant target
Calculate dosage, flow rate, and detention time problems for coagulation, flocculation, and sedimentation without references
Explain the jar test procedure and interpret three sample results to select an optimum coagulant dose
Define turbidity, alkalinity, and pH and state how each drives coagulant demand
Your checkpoint
A one-page treatment train diagram plus 20 solved dosing and detention-time problems with work shown, scored at 85% or better
Water Treatment
Describe filtration mechanisms and compare rapid sand, slow sand, and membrane filtration on loading rate and backwash needs
Compute filter loading rate, backwash rate, and unit filter run volume from given plant data
Explain disinfection CT concept and calculate required disinfectant residual for a stated contact time
Identify disinfection byproduct precursors and list two operational controls that reduce formation
Your checkpoint
A written summary of filtration and disinfection calculations covering at least 15 practice problems, with every missed problem reworked and explained
Water Distribution
Diagram a distribution system from source to customer meter and label valves, hydrants, storage, and backflow assemblies
Calculate head loss using the Hazen-Williams relationship for at least three pipe scenarios
Explain the purpose and placement of isolation valves, blowoffs, and air-release valves
Describe how storage tank level and pumping schedules create and relieve pressure extremes
Your checkpoint
A distribution system schematic with an annotated component list and a set of 10 solved head loss and pressure problems
Water Distribution
Explain cross-connection control hierarchy and select an appropriate backflow prevention assembly for four described scenarios
Describe main flushing, swabbing, and pigging procedures and state when each is appropriate
Calculate water age and explain its effect on disinfectant residual in dead ends and oversized mains
Interpret a coliform-positive distribution sample result and list the immediate response steps
Your checkpoint
A cross-connection and flushing procedure brief of at least 600 words with a scenario decision table for backflow assembly selection
Source Water and Groundwater
Classify source waters by origin and list the typical contaminants each carries
Explain well construction elements including casing, grout seal, screen, and sanitary seal, and state the function of each
Describe aquifer drawdown, cone of depression, and well interference using a simple sketch
Identify source water protection strategies and explain how each reduces treatment burden
Your checkpoint
A labeled well construction diagram plus a 400-word explanation of drawdown and well interference with one worked numerical example
Source Water and Groundwater & Regulations, Safety, and Laboratory Analysis
Locate and summarize the key requirements of the primary drinking water regulations that apply to a small system, including maximum contaminant levels and monitoring frequency
Explain the difference between primary and secondary standards and give two examples of each
Describe the total coliform rule sampling logic and what triggers repeat and additional samples
Explain the consumer confidence report requirement and list what it must contain
Your checkpoint
A regulation summary table listing at least 12 contaminants with their limits, monitoring basis, and health or aesthetic rationale
Regulations, Safety, and Laboratory Analysis
Outline the sample collection chain of custody from tap to bench and list handling requirements for bacteriological, chemical, and lead samples
Describe proper use and calibration checks for pH meter, turbidity meter, and spectrophotometer
Explain chlorine residual measurement by DPD and identify two common interferences
Identify confined space, chlorine handling, and electrical safety controls relevant to a treatment plant
Your checkpoint
A laboratory and safety checklist covering sample handling, instrument calibration, and three hazard categories, written as a usable field document
Water Treatment & Water Distribution & Source Water and Groundwater & Regulations, Safety, and Laboratory Analysis
Complete two full-length timed practice exams under exam conditions and score each by domain
Rework every missed item and write a one-line reason for the correct answer
Review weak areas identified by domain scores and re-solve at least 10 problems in each weak domain
Recite the key formulas for dosage, detention time, loading rate, CT, and head loss from memory
Your checkpoint
A domain score report from two timed practice exams with a written remediation log for every missed question
Milestones
Week 2: Score 85% or better on a 25-question treatment domain quiz covering coagulation, sedimentation, filtration, and disinfection calculations
Week 4: Explain cross-connection control and backflow assembly selection aloud in under five minutes without notes, and score 80% or better on a 25-question distribution quiz
Week 6: Match at least 12 contaminants to their regulatory limits and monitoring basis from memory, and correctly classify 10 standards as primary or secondary
Week 8: Average 80% or better across two full-length timed practice exams with no single domain below 70%