IAPMO Green Plumber study plan

Define water efficiency versus water conservation, and write a one-line distinction you can recall from memory

Identify the flow-rate and flush-volume limits that green codes set for toilets, urinals, showerheads, faucets, and prerinse spray valves

Calculate a building's baseline indoor water demand from fixture counts and occupancy assumptions

List the main water-efficiency labeling and certification programs and state what each one verifies

Explain how nonpotable water sources (rainwater, graywater, condensate, stormwater) differ in treatment needs and permitted indoor versus outdoor uses

Trace a rainwater harvesting train from catchment through first flush, storage, filtration, and disinfection, naming the purpose of each component

Size a storage tank roughly from catchment area, rainfall, and demand, and state why the result is an estimate rather than a design

Distinguish potable, nonpotable, and reclaimed water piping identification requirements and cross-connection hazards between them

Compare pressure-reducing, thermostatic mixing, and metering devices by the efficiency or safety problem each solves

Describe how leak detection, sub-metering, and consumption monitoring support ongoing water efficiency

Select pipe and fitting materials for a given water quality and application, and justify the choice against corrosion and scaling risk

Explain how domestic hot water distribution losses count against both water and energy efficiency

Calculate the energy required to heat a given volume of water across a stated temperature rise

Identify the efficiency metrics used for water heaters and explain what each metric does and does not capture

Explain how recirculation, pipe insulation, and reduced dead-leg volume cut hot water distribution losses

Describe the plumbing-related energy benefits of heat recovery from drainlines and of solar thermal or heat pump water heating

List the main renewable energy options relevant to plumbing systems and state the site conditions each depends on

Explain the water-energy nexus: where water systems consume energy and where energy systems consume water

Identify sustainable material selection criteria such as recycled content, durability, and end-of-life recovery

Describe how commissioning and ongoing maintenance preserve the efficiency gains designed into a system

Map the structure of green building rating and code systems: prerequisites, credits, mandatory provisions, and verification pathways

Explain the difference between a green building code requirement and a voluntary rating system credit, with examples

Identify which green code provisions touch plumbing directly and which are handled by other trades

Describe the inspection and verification steps that apply to water-efficient and nonpotable plumbing installations

Walk through a compliance review of a sample plumbing scope against green code requirements and flag every gap

Interpret code language on alternate water sources, backflow protection, and fixture replacement in existing buildings

Resolve conflicts between water-efficiency targets and minimum code requirements by stating which governs

Practice explaining a code requirement to an inspector or client in plain language

Consolidate the four domains into a single outline you can reconstruct from memory in under ten minutes

Complete timed practice across all domains and log every missed item by domain and cause

Revisit the weakest two domains using your own notes rather than new material

Rehearse short verbal explanations of the ten concepts you are least confident about