The Public Health Association of Australia say that 50C is fine for domestic situations. But perhaps bolstering their position, schools and child care centres have to have their water set no hotter than 43.5C...Perp: Yes, they now have five children, all young. They say that 50 degrees is dangerous with small children. Beachgurl: a mutual termination might be a good idea. First I will give them the 26 weeks notice.
Public Health Association of Australia Hot Tap Water Temperature and Scalds Policy
How much does a tempering valve cost? (Not because I'd consider it to keep the tenants happy, but to avoid the possibility of a lawsuit.)