Sulfate Reducing Bacteria Water Test Kit for Well or City Water - Add-on To Test Kit Only (West)THIS IS AN ADD ON Product ONLY You must have a test kit in your cart to add this product to the test parameters. Tests your well or city water for the presence of Sulfate Reducing Bacteria. Sulfate reducing bacteria feed on sulphur compounds including sulfate, sulfite, elemental sulfur, and thiosulfate. They are the producers of the "rotten egg" odor that is frequently an indicator that these bacteria are present. Other symptoms may include: