Yes there are moss mats floating on top but i can see green globs below the surface that cover a larger area.

There is some vegetation growing. From looking around online it looks like it is creeping water primrose. I dont really have a problem with the primrose. In the past if it gets a little too heavy to where the kids cant fish very easily i just pull it out with a rake.

I have two laterals, one runs about 75 feet to the north and discharges into the pond and the other heads out north and goes over a 100 ft and is simply buried. The end of the pipe is not exposed but the pipe does parallel the pond for a large portion of that distance roughly 30-40 feet away. The house was built in the early 90s so not sure what the regulations where at the time. I dont think i am dropping raw sewage in the pond. Late last year the tank was pumped and i always keep an eye on it to make sure the aerator in the tank is producing bubbles like it should. I do believe the septic is part of the problem though because it did seem like the moss kind of started at that location and grew from there. The northern end of the pond is pretty shallow, less than 3-4 ft. It is also surrounded by some mature oak/birch/maple trees so there is a good amount of leaf litter that ends up in the pond in the fall. This northern end gets very mossy and the southern winds seem to push things that way.

I agree i think i need have someone come check for sure that my septic is functioning correctly. I dont smell anything but it may not be breaking things down 100% like its designed.