Where the tube passes by the downspout from the gutter we installed a y fitting and drained the roof water from the gutter system directly into the main drainage line.
Gutter leach field.
There are many things you can do to improve the effectiveness of your gutters.
In a drywell water would not evaporate but slowly i mean slowly leach into the subsoil.
It depends on the soil type if the septic tank properly maintained and if the field was designed and installed correctly.
Also check and repair berms and ditches as necessary.
It is not necessary to have multiple drywells to dispose of additional water just a larger hole leach pit filled with more gravel.
A drain field or leach field should last between 30 to 50 years.
Screw a drain cover over the end of the tubing as it approaches daylight to keep critters out.
To prevent erosion make a rock bed around the end of the tube.
10 gutter and downspout runoff tips.
Also debris will flush out the end if it gets into the pipe from the gutter.
This pit is usually 3 feet long 3 feet wide and 3 to 4 feet deep although it can be excavated deeper and wider to accommodate larger drain problems.
It is then filled with gravel to within 4 inches from the top.
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It is a nice engineering touch though to install at least two drywells.
If you were on a drywell the debris would clog your stone and pipe.
Twice in the fall and before spring.
The leach field is the final destination of water released from your toilets and drains and when the system is functioning as it should the water percolates into the soil and disperses.
I built my house in 1984 and the leach field is still working as designed.
A drainage pit also called a dry well is used where water drainage is poor.
Inspect clear out your gutters regularly.
A catch basin will collect standing water allowing it to drain properly and a french drain pipe uses small holes to collect the water but leave soil intact.
Water that daylights on top of the ground can evaporate and leach into the ground.