Water testing across Queensland.

Australia's most water-diverse LGA: hinterland acreage on tanks and bores, coastal households on town supply, and everything in between.

Queensland's high country: deep basalt bores that run hard and manganese-heavy, dam-fed Toowoomba town supply, and a Darling Downs PFAS legacy zone at Oakey that shapes what we test for.

Rural acreage on Brisbane's northern doorstep — rainwater tanks and volcanic-plug bores on the D'Aguilar Range fringe, with mail-order kits for every household off the town-water grid.

Bayside suburbia to the Moreton Bay islands: SEQ Water mains dominates the mainland, but Russell, Macleay and Karragarra islanders rely on tanks and bores that need annual eyes-on.

Cairns, Port Douglas and the Wet Tropics: rainforest-catchment tanks, Barron River town supply, Tablelands basalt bores, and a cyclone-and-flood context that resets tank chemistry every wet season.

From Surfers to Coolangatta and up through Nerang and the hinterland — Gold Coast Water mains dominates the beach strip, but tank-supplemented eco-builds and hinterland bores need their own eyes-on.

Rainbow Beach to Hervey Bay, plus K'gari (Fraser Island): sand-island tank-only supply, cyclone-and-flood catchments, and Fraser Coast Regional Council mains through the urban strip.