Report Sulfur In Water, How To Get It Out? in Swimming Pool Water Chemistry Posted December 22, 2010 Shocking and filtration should resolve the sulfur issue. Note: Some pools use an alternative sanitizer called Baquacil. If the previous owners used Baquacil, then you cannot shock with chlorine or MPS (unless you decide to do a full conversion). You should ask the previous owners if they ever used Baquacil. If the previous owners are not available, you could have the water tested for Baquacil at the local pool store. Also, what chemicals did the previous owners leave for you? Did they leave any test kits?