Inventory the system’s actual equipment and infrastructure, document condition and service history, and rank work by criticality and failure consequences. Use manufacturer information and local evidence to estimate remaining life and replacement needs. ADEQ and EPA describe this planning process; age tables do not guarantee service life or approval for funding.
What belongs in the inventory?
ADEQ describes asset management as understanding the infrastructure and the costs of operating, maintaining and replacing it. EPA’s handbook for small water systems begins with identifying the assets, their condition, age, service history and expected useful life. This is planning guidance, not a universal replacement deadline or promise of financial assistance.
List the actual sources, pumps, treatment equipment, storage, distribution components, meters and other relevant facilities. Give each item a usable identifier and location, and retain specifications, installation records, maintenance history and known defects. Separate verified information from estimates so later work can improve the file.
The inventory should describe the drinking-water system being managed. A multifamily sewer-camera program addresses a narrower drainage task and does not inventory the potable supply or its treatment and storage equipment.
How should condition and remaining life be estimated?
ADEQ recommends starting with manufacturer information, then adjusting expected life using actual condition and service history. EPA’s handbook uses the same approach. A component with repeated failures or poor maintenance can need earlier work than an age-based example suggests.
Record the basis of each estimate, such as an inspection, service report or manufacturer recommendation. Do not turn a handbook’s example lifespan into a guarantee that installed equipment will survive that long. Arrange qualified evaluation when the condition is unknown or when evaluating the component involves electrical work, tank entry or other specialized precautions.
Keep the operator’s responsibilities clear so inspection findings and maintenance records reach the inventory rather than staying in separate contractor files.
Which projects should be prioritized?
Assess both the asset’s vulnerability and the consequence of losing it. An unreliable component serving a critical function may deserve attention before a similarly aged item with workable redundancy. Include the effect on service, water quality, regulatory compliance and the availability of alternate equipment or spare parts.
Define the desired level of service and identify the maintenance, repair or replacement work needed to support it. Distinguish an urgent corrective requirement from a long-term capital project. Planning a replacement does not suspend a compliance deadline or establish that a failing component can remain in service.
How does the inventory become a workable plan?
Estimate expenditure using current project information, sequence work and determine how it will be funded. Include ongoing maintenance and reserves rather than listing only the purchase price. Review the plan with the system’s management, operator and appropriate technical or financial advisers.
EPA presents asset management as a continuing process: carry out the plan and revise it as better information becomes available. Update records after repairs, replacement and condition changes. Keep the current file available for related work such as sanitary-survey preparation. An organized plan helps decisions; it does not itself establish approval, adequate rates or guaranteed funding.
For a proposed new community or nontransient noncommunity supply, distinguish this management guidance from the required elementary business-plan submission. A community system’s emergency operations plan likewise uses equipment and critical-component information for a separate response-planning task.