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#1
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Mound Septic System Cost
I realize that there could be a lot of variables in what the cost would be
of having a mound septic system installed. But I'd like to ask for some generalizations if I may to gain some information. I have a three bedroom house on a 3/4 acre lot, the ground is flat and filled with clay so the builder installed leach system doesn't work well due to lack of the ability of the soil to absorb the water. The house is about 30 years old. I'd like to ask those who have either installed or had installed a mound system what I could expect an approximate cost to be? Also what could I do to help reduce the costs? I'm capable of trenching, running PVC etc. Also is there a better alternative than a mound system? Thanks, Brian |
#2
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Mound Septic System Cost
"diablo" wrote:
I'd like to ask those who have either installed or had installed a mound system what I could expect an approximate cost to be? Install on a new house was over $9K, so I'd expect something similar. Don't forget, you need to have power available for the pump. |
#3
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Mound Septic System Cost
Our septic system was reserved for toilet. The bath lavatory washer and kitchen sink all drained into another system that was used for flower beds, trees, worm beds and lawn. Lots of care was used in what went down the drain, but it was a system that worked for decades. With that type of system, even heavy clay soil with trenches with 12 inches of gravel would support two people forever. You need efficient dual flush toilets - use .8 gallon of water for most flushes. |
#4
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Mound Septic System Cost
On Apr 15, 8:34 am, "diablo" wrote:
I realize that there could be a lot of variables in what the cost would be of having a mound septic system installed. But I'd like to ask for some generalizations if I may to gain some information. I have a three bedroom house on a 3/4 acre lot, the ground is flat and filled with clay so the builder installed leach system doesn't work well due to lack of the ability of the soil to absorb the water. The house is about 30 years old. I'd like to ask those who have either installed or had installed a mound system what I could expect an approximate cost to be? Also what could I do to help reduce the costs? I'm capable of trenching, running PVC etc. Also is there a better alternative than a mound system? It's been over 30 years since I had a 2nd field installed at ~$1,000. It uses the same tank and goes to a junction box where fields are easily switched as they are both gravity fed. Both are evaporation fields but on 2nd one, perk was better. Even then, 2nd field came up and I had to switch back to first after several years. You are lucky that your system has lasted this long. One contractor explained to me that they do not perk as well over the years due to salt build-up and need a couple of years of rain water draining through them to restore them. With a 2nd switchable field, you should never have to worry about septic again. Frank |
#5
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Mound Septic System Cost
On Apr 15, 8:34 am, "diablo" wrote:
I realize that there could be a lot of variables in what the cost would be of having a mound septic system installed. But I'd like to ask for some generalizations if I may to gain some information. I have a three bedroom house on a 3/4 acre lot, the ground is flat and filled with clay so the builder installed leach system doesn't work well due to lack of the ability of the soil to absorb the water. The house is about 30 years old. I'd like to ask those who have either installed or had installed a mound system what I could expect an approximate cost to be? Also what could I do to help reduce the costs? I'm capable of trenching, running PVC etc. Also is there a better alternative than a mound system? Thanks, Brian I'd guess you'd be talking $10,000 to $20,000 to build one from scratch. You might be able to just add a lift-pump and put in a new bad and keep the tank. That might help. You might also check into an aerobic system and if you have another way to dispose of the effluent, such as a road-side culvert (if allowed by law in your area). If your county has a health department, check with them. They might have a good idea of what is required and what it will cost. Otherwise, you'll have to check with a site engineer. If you can handle the semi-heavy equipment, you might be able to do it yourself; but you have a lot of dirt to move and rock/sand to distribute. It's not rocket science, but it's not a piece of cake, either. All states are different, but here in NY all septic systems are required to have stamped plans. Good luck with it. |
#6
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Mound Septic System Cost
"Frank" wrote:
It's been over 30 years since I had a 2nd field installed at ~$1,000. The minimum size requirements for a field have changed substantially over the years. I don't think you will get a legal replacement field installed for $1000 these days. It uses the same tank and goes to a junction box where fields are easily switched as they are both gravity fed. Both are evaporation fields but on 2nd one, perk was better. Even then, 2nd field came up and I had to switch back to first after several years. Two fields with a switch is great, if you can afford it and if there's room on the lot for two fields. You are lucky that your system has lasted this long. One contractor explained to me that they do not perk as well over the years due to salt build-up and need a couple of years of rain water draining through them to restore them. With a 2nd switchable field, you should never have to worry about septic again. Salt? The amount of salt in effluent, even with a water softener is insignificant. What happens to a field is that it plugs up with the natural floating stuff that doesn't settle out in a tank. I'd be surprised to see rain soaking through a field dealing with that, but maybe. |
#7
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Mound Septic System Cost
"Pat" wrote:
I'd guess you'd be talking $10,000 to $20,000 to build one from scratch. You might be able to just add a lift-pump and put in a new bad and keep the tank. The problem is that most mound system designs I've seen require a 3 chamber tank. |
#8
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Mound Septic System Cost
On Apr 15, 9:05 am, "Srgnt Billko" wrote:
.... ...But just for info, most of the liquid evaporates upward rather than soaks down vertically. I don't believe that is true from every report on septic drain field operation I've ever seen. You have a reference indicating differently? (If it were so, the importance of perc tests would be almost eliminated it seems.) http://www.sera17.ext.vt.edu/Documen...rain_field.pdf is pretty typical discussion of what I see/read at all extension or public health sites on requirements for drain/leach fields. To OP, I have seen some recent claims that adding aeration to anerobic septic fields has the possibility of improving operation of existing drain fields which have become saturated but other than vendor claims I've seen nothing actually done/published (but then again, I've not really looked that hard, either). At least one of these vendors promises money back if their system doesn't work so if they're legitimate business-wise, guess one could always look into whether it would do its magic for you. But as the link mentions, about the worst type of soil there is for long-term drain fields is heavy clay. If it were me, I'd talk to local county/municipal health, whoever is in charge. Typically they have pretty good handle on what the situation is locally as it really is very dependent on local soils, precipitation patterns, usage, etc., as to what is the underlying problem and an appropriate solution. Some places even have cost- sharing for such problems although often they'll be limited to long- standing problems rather than new, but "you never know until you ask." |
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