Green Plumbing

Answer: A - Checking the bathroom fan is not a fundamental step in a basic indoor residential water audit checklist. Checking the water filtration system, toilet refill tube position, and ice maker are all steps that can unearth issues or leaks that require mitigation to reduce water usage. They are among many fixtures and plumbing-related devices that belong on any indoor residential water audit. Most of these are also applicable to commercial water audits.