What you might be noticing
- Odor in hot water only
- Odor in both hot and cold water
- A change after equipment service or a period of low use
What to establish before buying
- Where and when does the odor appear?
- What is upstream and downstream of your current treatment?
- Are there contamination concerns that need laboratory review?
A mistake worth avoiding
Do not use the presence or absence of odor as a safety test. Treatment choice depends on measured conditions and the origin of the concern.