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Question DetailsAsked on 2/27/2018

2 bedroom house how much cost to have a 1500 holding tank put in and dumped

for septic system

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1 Answer


Assuming you mean a 1500 gallon tank - commonly about $1/gal for the tank itself, about $1.25-1.50 for concrete - so about $1500- 2250 for the tank itself. Installation commonly about $750-1500 - connecting to an existing drain field.

If you meant tank PLUS leach field, there it depends VERY much on your soil infiltration capacity, water table location, topography, distance to adjacent leach fields / water wells / surface waterways / habitations, frost penetration depth, etc - but rarely less than $2500 bare minimum for the leach field and associated piping only, sometimes more up to $5,000 range.

And in cases where a mounded leach field (built on top of ground due to impermeable soil or high water table) or advanced process field is needed, can run to $10,000-30,000 complete with tank. In very rare cases (usually due to proximity to neighbor houses or water wells or adjacent to/in environmentally protected zones like wildlife habitats) where a leach field is not allowed, then a advanced process personal treatment facility may be required and can run up to $25,00 - 100,000 range - but that is probably less than one in a thousand or so locations requiring that.

Pumping out (that is big tank) likely to be $500-1000 depending on your locale and particularly on what the local disposal fees are - in some cities that might push you toward the $1000-1500 range where they charge from $.10-0.20/gallon for the septage dumping fee alone - which could be $100-300 in your case for each pumping. Some areas with limited sewage treatment plant capacity charge as much as $0.50/gallon for the septage disposal from the truck, in others the haul distance can be as much as 50 miles or so - so I have seen cases where a normal 750-1000 gallon pumpout cost as much as $1000-2000, in rare cases.

I do wonder why so big a tank - for a two bedroom house would normally be 750-1000 gallons (1000 gallon is minimum size allowed in some states like NY).

Answered 2 years ago by LCD

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