FAQs

You will want to identify where the sewer main leaves the house. If you have a basement or crawl space, you can look for a 4-inch pipe…follow where it goes out of the foundation. If you don’t have a basement/crawl space, or the sewer main could be under the slab foundation, you will have to look for the lowest drain in the house. This is usually a floor drain in the laundry area, and this is generally the area where the pipe will leave the house.

Once you have an idea where the pipe exits the house, you want to go outside to that part of the house and take a ¼” or ½” steel rod about 5’ long (concrete re-bar will work, but a stainless steel rod is better because it doesn’t “stick” to soils as much) and start probing the ground next to the foundation until you hit the pipe. Be careful. Poke too hard and you could poke a hole in the pipe, particularly if it is older cast-iron pipe.

Once you find it you will want to move further out a few feet at a time to track the pipe until you locate the septic tank. Tanks are usually 10 to 20 feet away from the house. Once you find the tank, you will want to probe around it to get the outline. Tanks can be round, square or rectangular, but once you know the size you can start digging right in the middle.

Yes, we can pump out your septic tank this way; however, the best way to clean the septic tank is to uncover the top of the tank so that pumping can be completed in all compartments of the tank.

A septic tank is designed as a water-tight container with a water capacity usually in excess of 1,000 gallons, plus air and scum space equivalent to approximately 25% of water capacity. Inside of the tank, the waste is separated into three layers: solid waste or a sludge layer that accumulates on the bottom of the tank and provides a place for anaerobic (non-air breathing) bacteria to break it down. The middle layer consists of wastewater. Oils and greases create a scum layer that floats on top. 

Ideally, each compartment of the tank should have a riser at grade for cleaning, preferably 12-24 inches in diameter, but no less than 9 inches.  When pumping through only the small extensions, we can only pump out water from the tank; solids are not removed, as hose reach is limited. 

If your septic tank is not cleaned properly periodically (recommended every 2 to 4 years), it fills up and eventually the solids migrate out of the tank and into the drainage field. This sludge accumulation then prevents the drainage field from absorbing the wastewater, making it necessary to install a new and costly leach field.

There are many guidelines about how often a septic tank should be pumped. The absolute answer is to measure the amount of sludge and scum in the tank and pump when it exceeds recommended levels. Remember that the septic tank acts as a separation device separating solids and greases from the water. It takes time for this to happen and generally the tank should be three to four times larger than the daily flow of waste. This gives three to four days for the water to pass through the tank. As the tank fills, this time is reduced and the effectiveness of the tank declines.

Another way of looking at this is to remember that the most expensive part of the septic system is the drain field. Therefore, every effort should be made to protect the drain field. The only thing in the septic tank that generally has the potential to fail are the baffles. These can be inspected at the time of pumping. Perhaps a better guideline is to pump the septic tank at least every three years so that the baffles can be inspected and the drain field protected. If there is heavy usage of the system, then pumping more often may be warranted. See Maintaining Your Septic System – A Guide For Homeowners. 

While many products on the market claim to help septic systems work better, the truth is there is no magic potion to cure an ailing system. In fact, most engineers and sanitation professionals believe that commercial septic system additives are, at best, useless, and at worst, harmful to a system. There are two types of septic system additives: biological (like bacteria, enzymes, and yeast) and chemical. The biological additives are harmless, but some chemical additives can potentially harm the soil in the drain field and contaminate the groundwater.  While there hasn’t been extensive study on the effectiveness of these products, the general consensus among septic system experts is that septic system additives are an unnecessary evil. Be aware that the extended use of strong pharmaceuticals and personal care products may harm the working bacteria population in the tank.

Garbage disposals are not recommended for septic systems, because the food particles fill up the septic tank faster. If a garbage disposal is used the tank must be cleaned twice as often.

Both of these systems rely on a pit as the water absorption system. In general these will be older systems because in most areas permits cannot be obtained to install pits anymore. A seepage pit/drywell has a septic tank in front of it which collects the solids and greases. A cesspool acts as both the septic tank and the soil absorption system. While many cesspools and seepage pits operate for years, they are more prone to failure and are more difficult to restore. Proper maintenance can help extend their lives.

Seepage pits and cesspools were generally installed where there was good soil drainage. This was important since they have small soil absorption areas. If there is a relationship between the amount of surface area and the ability to absorb water, then most of the water in pits is absorbed through the bottoms. The sidewalls account for a small amount of absorption since there is little water pressure available to drive the water into the ground. As you go further from the pit, the water pressure also decreases. Over time, the soil outside the pit will become saturated, which also decreases the ability to function as an absorption system. This is one reason why a large amount of water can be pumped from a seepage pit or it can fill quickly after pumping. The water from the surrounding ground is draining back into the pit.

The treatment of a seepage pit or cesspool depends on treatment of the bottom to improve the water absorption ability. Because the bottom is almost always going to be anaerobic, this also increases the possibility of failure.