Rotting Rubber? What's up with the water?

This has got to be one of the weirdest  cases of rotting rubber I've encountered. This device is a water valve from a toilet. The odd-shaped black thing (see close up photo, circle) is a seal that prevents water in the toilet tank from leaking around the base of the valve. Rubber is not supposed to do this.

I have heard the water in Victoria might be problematic, especially for hot water tanks. I don't claim to know if this is an actual issue but it does leave one to wonder: HOW SAFE IS YOUR WATER?

Check your toilets' water tank yearly. Look for odd residue or stains in the bottom of the tank. Feel the rubber seals and if your finger is soiled with black, that's an indication the rubber is rotting and should be replaced.

Also, when going away for extended periods, turn off the main water shutoff (usually located in the basement on the street-side of the house) for peace of mind. This practice helps keep the valve moving smoothly too, which is important should you have to shut off the water for service to the plumbing system.

Hot water tanks have an average life of 10 years so make sure you consider replacing it when it's older. This could save thousands in insurance/flood claims.

Always consult a professional to take care of your home's mechanical issues.