When plumbing problems can justify leaving
Possibly, but be careful. If plumbing problems make a rental truly unlivable — like no running water or no working toilet — and the landlord will not fix them, California law may allow you to move out under "constructive eviction." But doing it the wrong way can leave you owing rent.
Breaking a lease is a serious step. Constructive eviction generally requires severe conditions, notice to the landlord and a fair chance to fix them, and that you actually move out because the home is unlivable. A minor plumbing issue usually will not qualify, while losing water or a working toilet for an extended time might.
Because the risk is real, run this past an attorney before you act. Before you move out over plumbing problems — or sign anything the landlord offers — a free, confidential review can help you avoid a costly mistake.
This is general information about California tenant rights, not legal advice. Every situation is different.