Color and odor alone cannot identify contaminants or establish that iron or manganese limits have been exceeded.
Documents to prepare
First check the water source, sampling locations, storage, and piping. Keep dated records of changes. Determine required tests against the intended use with the relevant staff. Discuss treatment tasks using actual test results; do not decide on chemicals or filter media while necessary information is missing.
Using records for the next step
Keep separate dates for raw-water information, equipment information, sampling, and records. Distinguish observations from conclusions about their causes, and mark missing information for review. Retain the confirmation basis and document versions when changing configurations or maintenance arrangements.
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Prepared with AI assistance; updated on October 1, 2026. This article does not replace site operating instructions or the relevant product and testing documents.