When you drain or lower your water level is there a change in the color of the liner or bucket? If not, then the color is in the water. Do you have copper pipes? It seems to me that the water is tinted when it comes out of your spigots, the slight greenish tint sounds like it may have some copper in it. You can find out if there is copper in your township water. If the water is tinted, I don't think it will be a problem. Do you know if anyone else in your area has the same problem? This is a tricky one since it is the same color in the bucket with your fill water. Please post and let me know,

Marie