[winterh]

I am very conscious of doing anything that will harm the water quality of the lake. Thats the reason my small lawn looks so bad. I would never use fertilizer. I recently bought a home with an existing seasonal outdoor shower in addition to the indoor bathrooms. I love to use it but when I do I either use no soap or maybe a small amount of a natural bio-degradable soap. I do rent sometimes and in spite of my leaving the bio-degradable stuff and warning against soap use I find shampoo bottles in the shower. It is maybe 40 feet from the lake. There is decking on the floor so I am unsure exactly whats underneath but assume the water just soaks into ground. There is no runoff towards the lake but is the ground enough to filter whatever it soaks in? I am thinking of building another one further back from lake. How far back must I go to insure a good filter process and are there other steps that can be taken to make sure it does no harm.