I bought a water softener from Culligan, that was supposed to remove up to 2 ppm of sulphur, about three years ago. The softener worked, but it did not remove the sulphur smell. I researched three different iron and sulphur filters and decided to go with Ottawa Water Filter's unit, because it had many positive reviews about it. After discussing the situation with Shawn he convinced me that his filter would do the job. I live in the Belleville, Ontario area, so I purchased the filter from Shawn and he shipped it to me and gave me excellent instructions to install it. As soon as I installed it Shawn helped me "boot it up". The very next day the iron taste in the water and the sulphur smell had totally disappeared. After four days it is still working great and I couldn't be happier. I would gladly recommend this filter, and Shawn, to anyone with an iron and sulphur problem in their well water.