Academy/Maintenance Fundamentals
Plumbing
What the association actually has to maintain, and the one plumbing item a code requires you to test.
Your association is responsible for common-area plumbing, the pipes, valves, and backflow preventers serving shared property, while your CC&Rs decide where that responsibility ends inside a unit. Backflow preventers protecting the potable water supply need testing at least annually. A plumbing leak left unfixed can also threaten the whole building's financing, not just one owner's wall.
Whose pipes are these?
"Plumbing" on a board's plate usually means two different things: the pipes, valves, and fixtures serving the whole property (a shared riser, a clubhouse bathroom, an irrigation main), and the pipes inside an individual unit that only that owner uses. The association is generally on the hook for the first category and the owner for the second.
Exactly where that line falls, especially for the wall cavity where a shared riser meets a unit's own branch line, is set by your governing documents, not by industry convention. Check your CC&Rs and bylaws before telling an owner a repair is (or is not) their bill to pay.
The one plumbing item the code actually tests
Most plumbing maintenance is judgment and schedule. Backflow preventers are different: they stop contaminated water from being drawn back into the drinking water supply, and plumbing codes require them to be tested at installation, right after any repair or relocation, and at least annually after that. In most communities, the property owner (your association, for shared systems) is responsible for making sure that testing happens.
The exact interval and who enforces it depend on the plumbing code your jurisdiction has adopted. Confirm the current requirement with a licensed plumbing contractor rather than assuming the annual figure above is binding as written.
Why a slow leak is bigger than it looks
A leak that just drips into a wall cavity feels like a maintenance backlog item, not an emergency. Two things change that. First, deferred maintenance of any kind can create fiscal instability and safety liability the longer it sits, not just a bigger repair bill later. Second, for condominium associations, lenders treat water damage specifically as a red flag.
"any mold, water intrusions or potentially damaging leaks to the project's building(s)"
Source: Selling Guide B4-2.1-03, Ineligible Projects, Fannie Mae
Fannie Mae lists that condition as grounds to make an entire project ineligible for financing, which means one unfixed leak can freeze mortgages and refinances for every owner in the building, not just the unit where the damage is visible.
Check yourself
Answer before you read the explanation, recalling it is what makes it stick.
Your association's backflow preventer was tested when it was installed three years ago and has never been tested since. What does that mean?
A pipe bursts inside a unit's wall, damaging the unit owner's flooring and the shared riser behind it. Who decides which repairs are the association's job?
An association ignores a slow leak in a common-area wall for over a year, and mold starts spreading. An owner then tries to refinance. What is the likely effect on that owner's loan?
Sources
- Backflow Preventer Testing: Procedures and Frequency, Backflow Authority
- Selling Guide B4-2.1-03, Ineligible Projects, Fannie Mae
- Deferred Capital Renewal and Deferred Maintenance, APPA
Related elsewhere in the Academy
Maintenance Fundamentals
Next, see how a documented maintenance log turns a one-off plumbing fix into a defensible record.
Exact backflow testing intervals, permit and enforcement requirements, and where the association's plumbing responsibility ends inside a unit vary by your locally adopted plumbing code and your CC&Rs.