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The Importance of Wastewater Lift Station

Lift stations also referred to as sewer pumping stations are a critical component in the overall collection of wastewater. Most wastewater collection systems can’t function without lift stations. They are facilities that move raw sewage from lower, usually underground, to higher elevations through a system of pipes. Generally, wastewater lift station in Houston are used when the elevation of the source is not sufficient for gravity flow, the use of gravity conveyance results in excessive excavation and high construction costs: basements are too low to discharge sewage in the main sewer; sewage must be conveyed over a ridge; the sewage must be raised to get gravity flow through a treatment plant; discharge outlets are below the level of the receiving body of water; an existing gravity system is not yet available. If you don’t work in water reclamation facilities or pollution control facilities, you might need a bit more clarification about what exactly makes lift stations so important. Let’s start with a quick breakdown of the components.

The Design

Lift stations are complex facilities, and they are more than one type. The key elements of wastewater lift stations include a wastewater receiving well, known as a wet well, a screen to separate coarse materials, pumps and pipes complete with valves, a power supply system, equipment control and alarm system, an odor control system, and a ventilation system. The wet well is also equipped with a level sensor that determines when the pump turns on and off. When the level rises to a predetermined point, a pump starts to lift the sewage upward through a pressurized pipe system. From there, it is discharged, and the cycle starts over until the sewage eventually reaches its final destination, which is usually a treatment plant.

Lift stations are also equipped with floor access hatches or openings above the pump room, an overhead monorail beam, bridge cane, and portable hoist for easy pump removal.

The Advantages

As mentioned earlier, the main purpose of wastewater lift stations in Houston is to reduce the overall cost of sewer system construction. Other advantages depend on the type of lift station being used. Dry-pit or well pumps are not fully submerged in wastewater, which makes troubleshooting problems much easier. Instead of shutting the station down and taking it out of the well for inspection, the issue can be easily diagnosed during operation. Dry-pit submersible pumps are highly resistant to flooding damage and have a compact design which is perfect where space is limited. Lastly, there are submersible pumps, which are the least expensive to construct because only a wet pit is needed. Overall, lift stations mean there is no direct contact with the wastewater and sewage can be pumped automatically to higher elevations.

The Disadvantages

Although there is a long list of pros associated with lift stations, there are also negatives. Wastewater lift stations in Houston require a significant amount of power, are expensive to upgrade, and because of potential noise and odors, they create public concerns. Although they can reduce the cost of construction, lift stations are also expensive to construct and maintain.

Great Reasons to Hire a Vacuum Truck Service

If you’re searching the internet for vacuum truck services near me, look no further than Drane Ranger for all your wastewater needs in the Houston area. Drane Ranger provides comprehensive maintenance programs and regular visits. If you prefer, you can drop by the disposal plant yourself to safely dispose of your non-hazardous waste water. If you need to dispose of liquid waste quickly and properly, the best choice when searching for vacuum truck services is Drane Ranger.

Why hire Drane Ranger for all your vacuum truck service needs?

Vacuum truck services near me isn’t a glamorous job, but someone has to do it. You should hire a reputable company to help keep your septic systems, sump pumps, and other areas clean of unwanted debris so that the system remains unclogged and working properly.

Septic tanks need regular cleaning

Septic tanks need regular cleaning and maintenance. Without proper cleaning to remove the build-up of solid material, the more likely it is to experience premature septic field failure. Septic tanks perform an important function, storing and breaking down sewage so that it can be disposed of safely. If you have septic tanks, they need professional attention from a trained and experienced vacuum truck service near me, like Drane Ranger.

Safe, responsible and sustainable disposal

When searching for ‘vacuum truck services near me,’ Drane Ranger is the best choice as we are committed to the safe, responsible, and sustainable treatment and disposal of all non-hazardous wastewater. We comply with all local and state regulations in both our disposal methods and the certification of all our staff. All of these factors ensure the best possible experience for our customers.

Quick and mess-free

Searching for ‘vacuum truck services near me’ can feel like a big task. Thankfully, we have been providing wastewater solutions for nearly 35 years and can help remove and dispose of your non-hazardous wastewater, quickly and mess-free.

Efficient and effective

We use heavy-duty vacuum systems designed to deal with difficult clean-up jobs. Liquid, sludge, and solids are no match for Drane Ranger. We work efficiently and effectively, causing minimal disturbance in the air. Unlike sweepers, vacuum truck services do not create dust clouds.

Business, industrial and residential

Whether you’re searching for ‘vacuum truck services near me’ for your business, industrial or residential needs, Drane Ranger can help! We offer a full range of professional sewer and septic services for business, industrial, and residential customers. No job is too big or too small. Drane Ranger can visit you as often as you need, including the mandatory quarterly cleaning of all traps within Houston city limits.

After completing your search for ‘vacuum truck services near me,’ you should select a company that focuses on customer service, compliance with the rules and regulations, and providing pick-up, disposal and management options.

Since 1985, Drane Ranger has been Houston’s total liquid waste management solution, offering everything from grease trap cleaning to vacuum truck services. The City of Houston requires the cleaning of all traps. Drane Ranger knows what they’re doing and has built a reputation for providing top quality ‘vacuum truck services near me.’ Contact us today for a free quote!

Choosing a Septic Tank Pumping Company – A Quick Guide

When issues occur with your septic system, things can get out of control very quickly in your plumbing system. You don’t want a septic system breakdown to cause water or sewer to back up into your home through your sinks, toilets or other drains because it can cause a lot of damage, and make your home unsafe to live in until it’s cleaned up. That is why it is important to have septic tank pumping companies that you know and trust available to properly maintain your septic system. You don’t want a company that will cut corners, or send out untrained specialists to work on your septic system, so how do you choose the right septic tank pumping company?

Find Referrals

Hiring a contractor for your home is a similar process throughout many services, the first step is to get a list of companies that have worked with someone you know already. Getting referrals can be as easy as just asking your friends, neighbors, or co-workers if they have hired a company for septic tank services in the past. You can also search online for tank pumping companies in your area, or contact your local health department for a list of companies operating in the area.

Research Each Company You Consider

With your list of companies from referrals or other sources, you can now do proper research on each company on your list. You can visit their website, or contact the companies directly to get information and make an informed decision about tank pumping companies that you can work with. Ensure that they are properly licensed and registered with the state regulator and that they have liability insurance. Also, their website should have information about how long they have been operating, the experience level of their employees and the types of septic systems they work on. You can also do a bit of research on septic systems yourself to ensure that the companies you are researching are using the latest technologies and techniques.

Determine If They Have the Services You Want

Before choosing from your list of researched tank pumping companies, check what additional services they offer. For example, if you need a whole new septic system installed, what kind of follow-up care do they provide? Do they offer regularly scheduled maintenance? Do they offer emergency care in case something needs to be dealt with immediately, how quickly can a technician be sent in such cases, and what does that cost? You can also ask if they offer any guarantees on their work.

Always Ask About Pricing – Avoid Hidden Fees

When it comes to services like those offered by tank pumping companies, not every fee is going to be up front on their website. If your property is located in a remote or difficult to access area, they may have an extra fee to cover transportation costs. There could also be extra digging fees if they have to dig underground to gain access to the septic tank system. If their truck can’t get close to the septic system due to terrain, ask if you have to pay extra for them to pump further distances.

If you are looking for tank pumping companies in the Houston, Texas area, visit the website of Drane Ranger, or contact by phone today at 281-489-1765 to request a quote for your septic tank needs.

Reasons Why You Should Not Delay the Cleaning of Your Grease Trap

If you own some sort of restaurant, chances are you have a grease trap. Grease traps are plumbing devices that are designed to trap most solids and greases before they travel to a wastewater disposal system. These traps reduce the amount of oils, greases, and fats that enter the wastewater disposal system. Typically, grease traps are installed in the sewer lines of a commercial kitchen. Homes don’t usually need a grease trap because the amount of grease produced in a home is a much lower volume than what grease traps are built for. As you might imagine, grease traps are not the most fun thing to clean, which is why you should consider hiring a grease trap cleaning service! These companies, such as Drane Ranger, know how to get all the gunk and grime out of your grease trap without you having to lift a finger!

How do Grease Traps Work?

Regular wastewater can contain small amounts of oil which enter treatment facilities and septic tanks to form a floating scum layer, which is slowly broken down and digested by microorganisms in an anaerobic digestion process. Large amounts of oil, grease, and fat can interrupt this process, resulting in a release of untreated sewage back into the environment. Grease traps work by reducing the flow of warm or hot greasy water and letting it cool down. As the water cools, the oil and grease in the water begin to separate and float to the top of the trap. The cool water continues its journey down the pipe to the sewer, and the grease and oil are left behind in the trap. The grease and oil residue will build up, which is why it’s important to regularly hire grease trap cleaning services to keep a sanitary and safe environment.

Why You Need to Clean Your Grease Trap:

Due to the nature of grease traps, they need annual deep cleaning and maintenance. The EPA discovered that grease is the primary cause of sewer blockages; even if accumulated grease doesn’t escalate to overflowing sewers, it can still interrupt wastewater utility operations and result in increased maintenance and operation requirements. To save yourself some stress, in the long run, hire a grease trap cleaning service.

When Does Your Grease Trap Need Cleaning?

A good rule of thumb is that a grease trap cleaning service should be used once every three months. To decide whether it should be one month or three, follow the one-quarter rule, which states that once one-quarter of your grease trap has been filled, it is time for a thorough cleaning. The reasoning behind the one-quarter rule is that your grease trap is no longer effective once it has filled one-quarter of the tank. If your grease trap isn’t cleaned out at this point, it will allow grease to escape into the sewer, and the chances of overflows and blockages increase drastically.

Who Can Clean Your Grease Trap?

Drane Ranger is a grease trap cleaning service that will meet all your grease trap cleaning needs. We offer numerous services, including quarterly maintenance plans or regular disposal and cleaning. Drane Ranger offers complete grease trap cleaning services in Houston, including getting rid of that grease trap odor to ensure that your grease traps remain effective and sanitary!

Seven Signs that You Need to Pump Your Septic Tank

Septic tank overflow can be off-putting and expensive, which is why it pays to know the signs that your septic tank needs to be drained. Here are seven such signs and what to do when it is time to call a septic tank pump out service.

1. It Isn’t Draining Like it Used to

Septic tanks can often drain less efficiently as they age, meaning that you will need to drain it more often. If your septic tank is older, be sure to have it checked for possible draining more often. Regular maintenance can help ensure that it doesn’t need increased draining as well, especially when you partner with a professional company.

2. There’s a Smell

The smell can often be the first indicator that a septic tank is overflowing as the smellier compounds can rise to the surface before any visible signs. If you think you can smell your septic tank, then it is likely time for it to be pumped out.

3. You Have Sewage Backup

A sewage backup is one of the worst symptoms of septic tank overflow. You will, unfortunately, know when this is happening for a number of reasons and will likely already be in contact with someone to have your septic tank drained. If you haven’t, contact a professional fast, as sewage backup can be just as dangerous as it is smelly.

4. Nitrate Content in Your Well Water

An indirect way to know if your septic tank is leaking is through testing your well water for nitrates. A high level of nitrates in your well water can mean that your septic tank is leaking underground and impacting the chemical compounds present in the water. In these instances, it is incredibly important to have your septic tank not only drained but checked for leaks. Other compounds could make your well water dangerous to consume or use. If you find high nitrate levels in your well water, be sure to contact a septic tank professional to assess your tank and have any repairs or replacements made.

5. Pooling Water

One of the most potentially expensive signs that your septic tank is leaking is pooling water, which can get into your home, other infrastructure or simply ruin your yard or driveway. If you notice pooling water where it doesn’t usually pool, especially if that water isn’t where it typically gathers after rain, then your septic tank is likely in need of draining.

6. Very Green and Lush Grass

The contents of a septic tank can actually be very good for your lawn, especially with the nitrates that can infiltrate your well water supply. So if your lawn or plants are looking particularly green and lush around the drain field, then your septic tank is likely leaking.

7. It’s Simply Time

Regular maintenance and monitoring of your septic tank is the best way to avoid all of the problems above, and that can be easily accomplished by partnering with a septic tank company like Drane Ranger.

Drane Ranger can set up a regular schedule to empty your septic tank and, while we’re there, we can make sure that it is working properly as well. If you have a septic tank and want it to last as long as possible, then this is the best way to have your septic tank emptied by a professional septic tank pump out service.

How Often Do You Need Septic Tank Pumping Done?

Nobody wants their septic tank to overload or break. The smell is awful, and repairs can be costly. But, just how often do you need to empty your septic tank? A lot of homeowners ask this question, and it’ a good question to ask. However, the question is a bit more complicated than a single answer.

Why Empty a Septic Tank?

Neglecting your septic tank maintenance can lead to some serious household issues. If your septic tank gets too full, it can lead to clogging of lateral field pipes and absorption into the surrounding soil first, and later will mean the sewage is reaching the surface. It’s not a pleasant smell for you, or your neighbors is hazardous to both yourself and the environment around your house and will need to be repaired. Even if you’ve never experienced an overload, this isn’t something to take chances with.

General Rule:

As a general rule, you should call one of your local septic tank pumping companies about once every three to five years. This timeline may be larger or smaller depending on a lot of factors, though.

Septic tank Size:

Your septic tank size will play a large role in how often you must hire septic tank pumping companies. A smaller septic tank will hold less sewage before being filled, so it will need to be emptied much more frequently than a large septic tank. For example, an average household size with a small septic tank may need to pump out the tank every one to two years instead, whereas as much larger septic tank will perhaps only need to be emptied every six to seven years.

Household Size:

Household size is also important to consider. A larger amount of people using the septic tank means that it will need to be emptied more frequently than a smaller amount of people. For example, if you are a single person using a moderately sized tank, you might go as long as a decade before needing to have it pumped out. However, a large family using the same tank might need to call septic tank pumping companies about every two years or less.

Volume of Solids in Wastewater:

The amount of solids that are in the wastewater will also impact how often you must call septic tank pumping companies. The more solids, the more room is taken up in your septic tank, and the more often it will need to be emptied out. Be sure to consider this when deciding how often your septic tank needs to be emptied.

Total Wastewater Generated:

Depending on your toilet’s efficiency, any leaks, and the amount of flushes per day, you may have to have your septic tank emptied. If you have an efficient and good quality toilet, you’ll likely make fewer calls to the septic tank pumping companies. However, if your kids flush the toilet five times per hour, you might be emptying your septic tank much more often.

Overall, there are a lot of factors determining how often you need to pump out your septic tank, including septic tank size, household size, solid volumes, and water generation, however, as a general rule of thumb, it’s good to hire a septic tank pumping company about every three to five years.

The Importance of Grit Trap Cleaning

Like grease, grit build-up needs to be cleaned regularly. Grit is dirt and sand and, although it may seem harmless, needs to be disposed of safely and properly, just like grease. Drane Ranger provides grease and grit trap cleaning services, collecting and disposing of it safely and properly.

What is a grit trap?

A grit trap is the first essential step to wastewater treatment. Typically, establishments such as car washes, auto repair shops, and manufacturing facilities will have grit traps. Grit traps use two chambers, one primary and one secondary, to separate oily petrochemicals and solid wastes (dirt, sands, and solids) from water. These protect public sewer systems from being inundated with all the junk that collects in the water at businesses like these, whereas grease traps help to collect liquid fats and prevent them from flushing downstream. Food businesses, like restaurants, always have a grease trap.

Why do you need to clean your grit trap?

Using grease and grit trap cleaning services is essential and helps keep costly repairs to a minimum. Having grit and debris reduces process capacity and increases maintenance costs. Grit traps help keep oil, debris, and dirt out of our wastewater collection systems. A grit trap maintenance program is essential to prevent the escape of large quantities of solids. If you aren’t maintaining your grit trap, you risk having it back up either because it needs to be cleaned or because of a blockage. These types of issues can result in costly repairs for your business.

Grit and other solid materials are a costly component of both process water and wastewater, clogging systems, reducing efficiencies and causing abrasion damage and wear that leads to increased cleaning, maintenance, and repair. Grit and debris can be passed downstream and cause big problems. Effective grit removal eliminates abrasive solids and sand before they have the chance to cause major and costly damage. Grease and grit trap cleaning services performed on a regular schedule will ensure things run smoothly.

How often do you need to clean a grit trap?

The City of Houston requires a quarterly pumping schedule and will fine any establishment that is non-compliant. The City reserves the right to conduct site inspections and take samples if needed. The general rule when it comes to grease and grit trap cleaning services is about once a month. However, higher volume establishments will require more frequent cleanings. Don’t get caught between service providers or trying to stretch the time between grit and grease trap cleaning service to save a buck – it’s not worth it!

Are you searching for grease and grit trap cleaning services? Drane Ranger has everything you need to process your general wastewater needs. Drane Ranger is committed to the safe, responsible, and sustainable treatment and disposal of all non-hazardous wastewater. The city of Houston requires cleaning of all traps and, with over 35 years of experience in the Houston area, Drane Ranger is the best choice for grease and grit trap service. Call for a free quote today!

When Does Your Wastewater Lift Station Need Professional Assistance?

Is your wastewater lift station in Houston struggling to do its job effectively? There are a number of problems that can occur as a result, so let’s take a quick look at how you can tell when it’s time to call in a professional.

But first things first—what is a wastewater lift station?

Wastewater lift stations in Houston are basically systems installed to move wastewater between different elevations—specifically from lower elevations to higher elevations (hence the term “lift”)—through a system of pipes. The systems are most often installed in an enclosed structure, called stations, and these come in two forms: the dry-pit or dry-well lift station, and the submersible lift station. The type of system you have will dictate how it needs to be serviced. Dry-well lift stations, for instance, house their pumps and valves in an easily accessible pump room, and the wet-well (which contains a screen to remove course materials, pumps and piping, motors, a power supply system, an equipment control and alarm system, and an odor control and ventilation system) is attached as a separate chamber. Most lift stations, whether custom-designed or prefabricated, usually feature equipment, like floor hatches or openings and a bridge crane or portable hoist, for easy pump removal.

How do you know when there’s a problem?

Wastewater lift stations in Houston are required to undergo frequent inspections for potential problems and to ensure they are functioning normally and efficiently. Warning signs that there is a problem could include:

• Unusual noises

• Vibration

• Heat

• Leakage or discharge

• Lower speed, suction, or pressure.

Of course, as with anything, preventative maintenance is key.

How often does your wastewater lift station need to be maintained?

This depends on the size and type of system. Typically, wastewater lift stations require weekly inspections to ensure everything is working correctly and to collect and properly dispose of any course materials collected by the grinder bar screens. Scrubber systems for odor control need to have their chemicals replenished every three months, but chemical feed stations should also be inspected weekly.

Why should you call in a professional to inspect and maintain your wastewater lift station?

The routine preventative maintenance of your wastewater lift station in Houston is a labor-intensive task, and it is extremely important when it comes to preventing costly repairs as a result of unnecessary equipment wear. It can also prevent system downtime, which can have other unfortunate repercussions (you don’t want those chemical scrubbers that were installed for odor control to experience any downtime, nor do you want too much course material to pile up before you arrange for safe and sanitary removal). It’s also important to remember that there are strict sewage control rules in Houston, and that means your wastewater lift station in Houston, whether on your property or at your business, needs to be regularly maintained to the highest standards.

Who should you contact for routine maintenance?

Ideally, the same professionals you would contact if you were experiencing a problem. You need someone you can call in a crunch as well as someone who can offer regular maintenance and repair of your lift station and the wet well inside, as well as safe disposal of sewage and other related materials. To avoid sewage issues now and in the future, contact Drane Ranger today.

Five Indicating Signs to Call Septic Tank Cleaning Company

When Was the Last Time the Tank Was Pumped?

Generally speaking, a septic tank needs to be pumped by a tank cleaning company every two to three years. You may need to have it cleaned more frequently, depending on how many people live in your household and how old your septic tank is.

If it’s been more than three years since your septic tank was serviced by a professional septic tank cleaning service in Alvin, TX, don’t delay. Chances are, your tank is long overdue for proper cleaning.

Are You Expecting Guest in the Near Future?

If you’re anticipating heavy septic tank use shortly—maybe your entire extended family is coming to visit (gulp)— it’s a good idea to have your septic tank cleaned and ready for action. If you’re local, you can call a professional septic tank cleaning company, and they will advise you as to what you need to do to prepare for the heavier influx of sewage. Getting your septic tank cleaned means you’ll have one less headache to worry about.

Is there a Bad Smell?

One sure fire way to know if you need to call a septic tank cleaning company in Alvin, TX, is if there’s a bad odor coming from your lawn, or any other area surrounding your septic tank. If there’s a major problem with your septic tank, you are going to smell it. Make sure you contact a septic tank cleaning company right away so that you don’t—ugh—see it.

Are You Worried Tree Roots Are Clogging Your Septic Tank’s Drainage Lines?

Tree roots are a leading cause of pipe blockages, and your septic tank is no exception. If you have a lot of trees on your property, you’ll want to ensure that they aren’t causing any trouble underground. Even if you’ve had your tank cleaned in the last two years, you may want to call a septic tank cleaning service in Alvin, TX, to ensure that tree roots aren’t going to cause you any expensive damage in the near future.

Is Your Yard Wet but It Hasn’t Rained?

If your yard is wet but it hasn’t rained (or you haven’t had the sprinklers on), no—it’s not a new weather phenomenon – your septic tank is most likely leaking sewage. A squishy, lush lawn may just mean that you are long overdue to have a professional septic tank cleaning company in Lavin, TX come out and take a look at your tank to see if everything’s working properly or, if not, to clean or repair your tank.

If you live in Alvin, TX, and own a septic tank, you need to make sure it’s properly functioning at all times. Don’t wait for these indicating signs to tell you it’s time to clean your septic tank. Call a professional today, so that you can avoid expensive repairs and smelly messes. No one wants to deal with a septic tank problem, except for the professionals whose job it is.

What to Expect During a Septic Tank Pumping

Are you a new homeowner or simply new to owning a septic tank? It’s definitely a new learning curve that will have you thinking a lot more about what goes down your drain. Let’s dispel a little of the new-owner worry by taking a quick look at what you can expect to happen during a septic tank pumping.

1) The arrival

When your septic tank pumping expert first gets to your home, he or she will most likely want to consult with you to make sure you haven’t been experiencing any problems with your septic tank.

2) Locating and exposing the tank access lids

Before the tank can be emptied, the septic tank pumping technician will need to locate the tank. Don’t worry if you don’t know where it is; they have tools to help them find it. Your tank access lid may be clearly accessible, or it may be covered by sod.

3) Initial inspection

The septic tank pumping won’t start right away; once the tank access is uncovered and opened, the technician will do a quick inspection to take note of the liquid level of the tank and how that is related to the tank’s outlet pipe. This will help to establish whether you have a problem like a tank leak or a drainpipe or drain field issue.

4) The pumping begins

The technician will place a large vacuum hose into the tank’s manholes to begin the septic tank pumping. The hose is attached to a strong pump on the Honey Wagon (the septic truck). It will continually drain all of the solids and liquids from the tank while a septage spoon and backflushing techniques may be used to loosen and remove any persistent sludge.

5) The inspection continues

As the septic tank pumping is taking place, your technician will be inspecting your tank for signs of trouble. For instance, too heavy or too light backflow as the tank empties may suggest a drain field problem. The technician will also check for signs of structural damage, including holes, cracks, seam leaks, etc.

6) Once emptied, the tank gets cleaned

The technician will follow the septic tank pumping with a quick cleaning by spraying the walls of the tank with clean water. Once finished, the tank is closed back up, the access lid is re-covered, and the technician will inform you of anything observed during the inspection.

Questions you may have about septic tank pumping:

Here are the answers to a few common questions you may have about the septic tank pumping process.

How often do you need to have your tank pumped?

This depends on usage and the number of people in your house. Relax, we don’t just mean the number of flushes (trust me, no one’s judging here); the water that goes down the drain has an impact, too, so if you do a lot of laundry or cooking or just have hard water, that can have an impact on your septic tank, too. On average, you should arrange for septic tank pumping every 1 to 3 years, or when the tank’s total solid accumulation hits 30% – 50% of total capacity.

How long will it take?

Septic tank pumping usually takes 20 – 35 minutes, although this can be slowed down if there is too much accumulation, or if poor flushing decisions or tree roots have led to clogs.

How much will it cost?

This depends on the size and condition of the tank, but you can expect septic tank pumping to cost anywhere from $75 – $300.

Can I do things to reduce pumping frequency?

Make sure you are using water sparingly and only disposing of septic-friendly materials. Avoid flushing things like diapers or baby wipes since they can plug your tank’s hoses. Make sure you aren’t using your in-sink garbage disposal; your septic tank isn’t designed to break down food waste. Try to disperse laundry day over the week, and don’t pour any chemicals down the drain that could corrode pipes or kill the bacteria that help break down waste. Making these adjustments may reduce the required frequency of septic tank pumping, but don’t push this back too far; overloading the tank can have problems and reducing inspections may mean missing warning signs.