A Step-by-Step Maintenance Guide | f you are a pool owner, you have made a major investment and proper swimming pool maintenance is an absolute must! Keeping your pool clean and maintained should be a top priority since a clean pool is essential in many ways. First, no one wants to swim in, or look at, a dirty, green, or yellow pool. Keep in mind that although the pool may look clean, it may in fact be still contaminated with enough bacteria to cause sickness. If a pool is not maintained properl ...