Underground Water Tank

[OHYUTIN]

Due to the 5 star rating requirement for new homes we are required to install an underground rainwater tank connected to the toilets. The water is not clear but yellowy :oo: and it looks like the toilet has not been flushed properly. How do I improve the water quality? Thanks in advance for any suggestions/help.

[wonderplumb]

Does the tank have a cloth bag to filter the incoming water? If so a good clean wouldnt go astray. I would also suggest pumping the tank dry and giving it a good clean, provided you have a towns water back up, which you should.

[echnidna]

The yellow is likely colour leached from leaves/dirt in your gutters

drop one of those blue disinfector doovies in the cistern, then the loo water will be blue

[Turpy]

Due to the 5 star rating requirement for new homes we are required to install an underground rainwater tank connected to the toilets. The water is not clear but yellowy :oo: and it looks like the toilet has not been flushed properly. How do I improve the water quality? Thanks in advance for any suggestions/help.

Funny that the water is yellow. Our tank (above ground) is also connected to the toilets and the water is perfectly clear. If we get a bit of rain, the water sometimes gets a bit cloudy, but never yellow.

How long has the tank been installed? Just wondering because a mate had a tank fitted up, and connected to the toilets, and once it was finished they filled it from a water tanker.
The problem was, I think the tanker had obtained the water from a local creek.