Answer: This question relates, in part, to the Q&A that immediately preceded this one regarding the tenant who refused to maintain their Space. Please review it.
Answer A : First, the MHCO Lease cited above addresses this. Not fixing the leaks, which are their responsibility to do, is a violation. Secondly, ORS 90.740(f) requires that tenants "(u)se electrical, water, storm water drainage and sewage disposal systems in a reasonable manner and maintain the connections to those systems.
Answer: By your question, it appears that your community is not sub-metered. If it were, the owners of the home would likely recognize the problem and immediately and fix it.