Can you run a larger pipe that flow to an area away from the neighbor? Can you tie it into the storm drain in the street? Sometimes it is tough to find a place for the water. Will the city or town let you pump it into the sewer? Call & find out.Theres got to be something to keep the erosion down & keep your neighbor happy.Good luck.C.
Local codes vary on the discharge. Some municipalities will let you tie into the sewer, but all too many times I have seen the waterproofers take the easy way out and install the discharge into the cleanout of the main house drain. I frown on this because if there ever is a sewer blockage, where does the cable get put in to snake the main drain clear? A seperate wye should be installed for the sump pump drainage. One more idea is to discharge the ground water onto the sunny side of the house, so the water can evaporate sooner.