Getting a bigger sump pump
Separate drain lines, separate pumps. separate check valves, and if possible on two completely separate electrical circuits, preferably one on each side of the 120/240 circuit so that if one half goes out, the other may still be working.!!!
I have two completely separate electrical pumps, float sensors, discharge lines, and also a water-powered pump with its own float at a much higher level as a final backstop before boarding Noah's ark.
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