I wrote it about the town I've been living in, Uralla. We have been on bottled water since December 'cos our water supply is contaminated with Arsenic. Legit. We got advised not to drink but bathing in is 'still ok'.
That and forever watching cartoons with hero unicorns. Apparently Arsenic poisoning gives you brain damage, hence the idea that I get daily exposure to arsenic and develop a psychosis believing I'm a unicorn saving the world!