Free checklist
Domestic water storage tank annual maintenance checklist
The annual domestic water storage tank service is the deep pass: the measurements, cleanings and tests a quarterly round doesn't reach. This checklist keeps the full service on record with the photos that make it defensible later. Work is commonly verified against the applicable plumbing code, manufacturer's published instructions. Confirm the edition your authority having jurisdiction has adopted.
- Items
- 3
- Photos required
- 5
- Built for
- Subcontractors
Who runs it
The plumbing service lead on the annual potable water service.
When in the schedule
Once a year, scheduled with a supply changeover or low-demand window so the tank can be drained and taken out of service.
The checklist
Every item, and the photo that proves it
The photo count on each row is what RTI would require before the item can be submitted. Copy the list as is, or load it into RTI and let the gate enforce it.
Internal inspection
- 2 photos
Tank drained and inspected inside for sediment and biofilm
Interior cleaned of sediment and biofilm, coating or liner sound with no corrosion or delamination, no standing debris left in the bottom.
Disinfection
- 2 photos
Tank disinfected and cleared by sample before return to service
Tank disinfected and flushed per the manufacturer's and code guidance, and a clearing sample confirmed acceptable before the tank is put back on the potable supply.
Turnover and records
- 1 photo
Turnover and disinfection records confirmed current
Disinfection and sample results filed and current, turnover rate reviewed against demand, level set points confirmed to keep the water moving, log up to date.
What usually sends this back
The failures are almost always the evidence, not the work
- Tank disinfected but returned to service without confirming a clearing sample, so a contamination problem is put right back into the potable supply.
- Sediment and biofilm cleaned from the walls but left in the bottom, so it re-suspends the first time demand stirs the tank.
Run it with the Photo Gate
A checklist nobody can submit half-finished
Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 5 required photos exist. Approved walks roll into a branded turnover package with a tamper-evident record behind every line.
Submission state
The gate is enforced on the server, so it holds even if the phone is offline when the walk happens.
Common questions
- What does this domestic water storage tank annual checklist cover?
- 3 items across 3 sections, covering internal inspection, disinfection, turnover and records. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
- Who should run this inspection?
- The plumbing service lead on the annual potable water service.
- When in the schedule should this walk happen?
- Once a year, scheduled with a supply changeover or low-demand window so the tank can be drained and taken out of service.
- Why does every item ask for a photo?
- 5 of the 3 items call for photo evidence. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
- What most often fails a domestic water storage tank annual inspection?
- Tank disinfected but returned to service without confirming a clearing sample, so a contamination problem is put right back into the potable supply. Sediment and biofilm cleaned from the walls but left in the bottom, so it re-suspends the first time demand stirs the tank.
- Can I use this checklist in RTI?
- Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper-evident audit trail.
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