Your Pur Water Filter can come to its end just after it's filtered about 100 gallons of water. So when The sunshine goes from yellow to green, it is an indication that you must change your filter ASAP! Contingent on the kind of Pur Water Filter design you use, Here's https://purwaterfilterblinkingred96418.post-blogs.com/38038234/the-fact-about-pur-water-filter-that-no-one-is-suggesting