In areas where rainfall is poor, rainwater tanks are infinitely useful. If you have one in your yard, you can't just leave it there without any maintenance. From time-to-time, you need to engage in rainwater tank cleaning.
Address your gutters to keep your rainwater tank clean
Did you know that four-percent of gutters contain faecal matter? With that in mind, you need to clean them regularly. Try cleaning your gutters on a quarterly basis.