if the sink plumbing gas pipe are designed correctly

A good many cities do not want homeowners using gray water outside the home. However, this doesn't make much sense because often there's nothing wrong with that water, and it could be used on the landscaping. Many cities have a terrible time with drought issues, and we need to be thinking here more and more. Sometimes, it doesn't seem as if the sink plumbing Gas Pipe are designed correctly to help separate out the dirty water and debris from the mostly clean gray water.

However, I would submit to you that if I went to a number of engineering students who studied fluid dynamics, we could very easily design a new pipe system under the sink which would allow the debris which is heavier to go into the city sewer system and the water which is lighter to go into a secondary pipe to be used later for landscaping outside the home.

Consider if you will that 40% of the water we use is inside the home, and 60% is on the landscaping outside the home, or at least that is the national average they say. I don't have any reason to discount those statistics, they seem about right to me.

Ground probing radars are very effective in accurately locating the placement of Underground Pipe as they have already proven their worth on locating above ground. This device however is a complex technique to use. This requires the use of complex technology and image interpretation that not only requires the cost of the device but also the skills needed to interpret the data results. Although very useful, this is not often considered and effective everyday tool because of its size, cost, and difficulty of use.