While you should consider all of the factors above, many professionals believe that the maximum weight for a leach field is around 10,000 pounds. Still, it's important to be cautious of what you choose to do over your leach field to ensure it's working properly.
In general, no, you shouldn't drive over a septic leach/drain field. If it's shallow (3 or 4 feet down) or poorly constructed, you could damage the piping. If it's shallow, you may compact the soils a bit (but soils ABOVE the gravel backfill don't matter, only those alongside the gravel backfill).
A big risk to building over the drainfield is causing the lines to collapse. Also, the soil can compact around the trenches, which may not allow for percolation. Repairing the drainfield or moving it may require an entirely new system depending on your system age and the regulations for your local authority.
Yes, you can. One caveat. Provide access to the top for cleaning. It's inevitably going to need pumping out. DO NOT slab over the drain field or distribution box. The distribution box is one of the other most accessed devices in your system. The drain field need weather to operate properly.
Plant grass or keep existing native vegetation. These are the best covers for your drainfield. Direct all surface drainage away from the septic system. Use shallow-rooted plants (see plant list above).
Avoid Putting Weight on the Drain Field
Never place, park, or store any heavy objects on your drain field; this means you should never use your drain field as an overflow parking lot. In addition, you shouldn't build any structures on your drain field. This includes building a deck or swimming pool.
You should never install the following over a drainfield:
Driveways.
Will a ride-on lawn mower hurt my drain field? No. Ride-on mowers and other garden care equipment will not harm your leach field. You should, however, stay away from it with cars, pick-up trucks, and rubber tired heavy equipment like backhoe loaders.
Adding 2 to 3 inches of topsoil should be fine, but more could be a problem. Second, the plants need to be rela- tively low-maintenance and low- water use. It will be best if you select plants for your drainfield that, once established, will not require routine watering.
In general: Your septic tank and leach field should be 100% within your property line, so putting a fence on the outside edge of your property won't be a problem as you won't hit either the leach field or the septic tank. If you want to run a fence through the leach field, beware!
No, you cannot. The septic field needs to have no construction above it. It will stop working properly. If you want the garage where the septic leach field is, construct a new septic leach field.
A properly designed, installed and maintained field will need to be replaced once every 15 to 30 years. If the field is not designed and constructed adequately or receives poor maintenance, it may need to be replaced before the 15 years.
Your pool should be far enough away that it doesn't interfere with septic cover access or block the truck from reaching your cover. In-ground pools can't be built over the pipes leading to your septic tank, which makes this process crucial for avoiding disasters.
It's never a good idea to drive equipment over a septic drain field (leach field).
In most cases, homeowners insurance does cover septic tank damage when it results from a sudden, unexpected event (as you might have noticed from the above list). However, home insurance is not likely to cover damage resulting from septic system problems caused by wear and tear or lack of maintenance.
Typically, the drainfield consists of three to five trenches that are 18 to 24 inches deep, up to 100 ft long, with a perforated pipe in 12 to 18 inches deep gravel covered by 12 inches of soil.
However, just because it's buried doesn't mean it's invincible to harm. Driving over a septic tank or its associated drainage field is not recommended. Septic systems are underground wastewater treatment structures that rely on the natural processes of anaerobic bacteria to break down and treat sewage.
No. Focused pressure for long periods of time could cause leach pipes to crack or break, even if the vehicle's weight does not exceed 10,000 pounds. Parking on top of leach fields should be avoided.
The best plants you can put on top of a septic drain or leach field are shallow-rooted herbaceous plants. These include perennials, bulbs, turf-grass, weeds, groundcovers, and more. A few examples are holly shrubs, boxwood shrubs, azalea shrubs, hollyhocks, wild violets, and spring bulbs.
DON'T plant anything over or near the drain field except grass. Roots from nearby trees or shrubs may clog and damage drain lines. DON'T dig in your drain field or build anything over it. DON'T cover the drain field with a hard surface such as concrete or asphalt.
The grass always being greener may sound like a good thing, but this saying may not always be true. The grass around your septic system can give you a clue as to the condition of your septic system's health. Bright green grass in your yard may indicate a leak or early failure of your septic system's drainfield.
Vegetable gardening over a leach field is a bad idea. Though properly functioning septic systems won't contaminate the soil with harmful pathogens, there is no easy way to guarantee that the crops grown over a leach field will be safe to eat.
It's recommended that the leach field should be an area that sees only light foot traffic. Driving or parking over the leach field could cause the pipes to burst, and a concrete foundation could create similar issues and make it much more challenging to repair a broken leach pipe, as well.
Finally, it's important to locate your septic tank so that you can protect it. Never place anything heavy over it, think sheds, or above ground pools, etc. It's probably not the best place to set up your kids' trampoline or swing set either.
Similar to building a home or deck, placing a shed on your septic field is not advisable. Sheds are heavy and can compact the soil, reducing the efficiency of the drain field. Additionally, heavy foot traffic around a shed could inadvertently lead to damage.