Practical guides from the team that tests and installs water systems in Bali villas every week. Start with the question you actually have.
If you are new to the island, read is Bali tap water safe to drink first: it explains what bore wells and PDAM mains carry, how the water changes between the wet and dry seasons, and which filter stage fixes which problem. Then use the home testing guide to take your own TDS and hardness readings.
The RO vs UV comparison covers drinking water; the shower filter guide covers dry hair, scale and iron stains; and the complete buyer's guide puts every option side by side. If cost decides it, the galon vs filter calculator shows the payback for your own household.
Bali water wears filters out faster than manufacturer schedules assume. The RO replacement schedule lists every interval, and the district water guide explains why Canggu, the Bukit, Kuta and Ubud need different set-ups.