
How much does it cost to install a septic system in Boston? Explore cost factors, add-ons, and how you can save money on this home system.
Septic tank service costs depend on your project and location. Check with a local pro for your specific job.
Septic tank pumping costs in Boston start at $250.
Septic clog removal costs $500 to $5,000 in Boston.
If you need septic tank cleaning, it will add up to $700 to your costs.
Boston, Massachusetts, is one of the most expensive cities in the US, with a significantly higher cost of living than the national average. This means an increase in prices for services like septic tank pumping, which range between $263 and $414, or $329, on average. Your cost to pump a septic tank in Boston will increase for larger tanks, less frequent pumping, or booking during a busy time of year.
The most important cost factors for septic tank pumping in Boston, MA, are tank size, the amount of waste to be pumped, seasonality, and your location.
Pumping a 600-gallon septic tank—like a small septic tank for one toilet—may cost as little as $250, while pumping a 2,000-gallon septic tank may cost $1,250 or more. The most common septic tank sizes, however, are the more moderately sized ones, averaging between 1,000 and 1,500 gallons.
Here’s a breakdown of septic tank pumping costs by size:
| Septic Tank Size (Gallons) | Average Cost |
|---|---|
| 750 | $250–$400 |
| 1,000 | $250–$700 |
| 1,250 | $275–$900 |
| 1,500 | $250–$1,100 |
| 1,750 | $400–$1,200 |
Tanks with high usage will require more frequent pumping. For example, if you frequently use large amounts of water, put food down the garbage disposal, or host parties with lots of guests, you’ll need to pump your septic tank more often. On the other hand, larger septic tanks take longer to fill and therefore require less frequent pumping.
The cost of septic tank pumping can rise sharply when property owners fail to have their tanks pumped every three to five years.
Regardless of the type of septic system you have, not pumping it on schedule will cause solids to accumulate until the tank's holding capacity is depleted, leading to a clog. On average, septic tank repairs cost $2,000, but they can range from $1,500 to $7,500, depending on the severity of the issue.
Tanks should be pumped more frequently in larger households. Pumping should also be more frequent if your home has a garbage disposal, you entertain frequently, or you often dump harsh cleaning solutions down your drains.
Tanks should be pumped more frequently in larger households. Pumping should also be more frequent if your home has a garbage disposal, you entertain frequently, or you often dump harsh cleaning solutions down your drains.
Here’s how often you should pump your septic tank based on its size and how big your house is:
| Septic Tank Size (Gallons) | Number of Bedrooms | Pumping Frequency (Years) |
|---|---|---|
| 500 | 1 | 5 |
| 750 | 2 | 5 |
| 1,000 | 3 | 3 |
| 1,250 | 4 | 3 |
| 1,500 | 5 | 2–3 |
| 1,750 | 6+ | 2 |
During certain times of year, especially in areas with harsh winters, demand for septic tank services fluctuates, leading to varying prices.
We don’t recommend booking a septic tank pumping in the winter months if your area gets heavy snow and ice. Frozen ground and slippery conditions make it more difficult for pros to access your tank, increasing labor and equipment costs.
Spring is the most popular time for homeowners to get their septic systems pumped and checked. The increased demand can cause prices to spike. If your tank isn’t too full, consider booking in the summer or early fall, when demand is lower.
If your septic tank is located in a hard-to-reach area, such as under a deck or on uneven terrain, it can make the job more challenging and expensive. Similarly, tanks that are buried deeper underground require more effort to uncover and pump, so it’s a good idea to budget for a higher pumping fee.
According to data from Angi customers, most homeowners (32.9%) have a pro clean their septic tank every one to four years. However, 24.5% of homeowners don’t know how often they get their septic tank cleaned. If you don’t know the last time your system was cleaned, reach out to a septic company ASAP.
Septic tank pumping is just one of the costs associated with properly maintaining a home’s septic system. Here are some additional services and ongoing expenses that are often associated with septic tanks:
| Service | Average Cost |
|---|---|
| Overflow cleanup | $7–$15 per sq. ft. |
| Inspections | $300–$600 |
| Maintenance | $150–$700 |
| Tank cleaning | $300–$700 |
| Clog removal | $500–$5,000 |
| Field aeration | $1,000–$5,000 |
| Septic tank additives | $15–$190 |
While the average price for a sewer line inspection is $350, homeowners can expect to pay anywhere from $200 to $600. Using a camera to inspect a sewer line, a plumber will look for issues that could lead to costly repairs down the road. Some of the red flags a sewer line inspection can uncover include line breakage, embedded objects, tree roots, and rocks.
The average cost of septic tank repairs is $750. Clog removal is the most common septic tank repair because objects can easily get down a drain. The most common method for resolving a septic tank clog is to use an auger to reach the clog.
Homeowners may not realize there's a clog until they notice telltale signs, such as slow-draining sinks, standing water near the tank, foul odors, gurgling sounds in the plumbing system, or water and sewage bubbling from toilets, drains, and sinks.
While septic tank pumping is needed every three to five years, annual tank inspections and maintenance can help detect issues before they worsen. The maintenance technician can also let you know when it's time to pump. Septic tank maintenance costs range from $150 to $700 per year.
Aeration is the process of upgrading a septic system without actually doing a major update. This process costs between $1,000 and $5,000 and revives sluggish septic systems without replacing the full leach field. It turns your system from an oxygen-free anaerobic system to an oxygen-rich aerobic environment.
Yard cleaning is necessary if sewage from a septic system spills into the grass. While some people prefer to handle the mess by using bleach and water to disinfect the area, others hire professional yard cleaners to restore the area's hygiene and get rid of the septic smell outside. Lime is also frequently used to quickly break down sewage. Outdoor sewage cleanup costs an average of $7 to $15 per square foot.
While the average cost to clean a septic tank is $500, cleaning costs for large tanks can run closer to $700.
There are other costs to keep in mind as you make your budget for hiring septic services in Boston, MA. Costs will increase if you live in a very dense, urban area, if the tank contains large amounts of oil or grease, or if you add extra services such as baffle inspections or filter cleaning.
Septic tank pumping is quicker and easier when there’s plenty of room for the crew to work. If you’re located in a denser, more urban area of Boston, it will take longer and cost more to have your septic system pumped.
If your septic system is clogged with fats, oils, and grease, it will make your septic team’s job harder. Expect to pay a higher service fee if your tank is in this condition—up to $800, depending on the severity.
Filter cleaning, baffle repairs, or effluent filter replacement are some of the most important steps to maintaining your septic tank, but these services generally aren’t included in your baseline pumping cost. Expect to pay $250 to $900 more if you need these services.
Other pros can help put the finishing touches on your property after getting your septic tank pumped and maintained. Landscapers can restore the area around the tank, helping to beautify the property. Expect to pay a Boston landscaper $1 to $25 per square foot for post-pumping restoration. If you’re dealing with backups, clogged drain lines, or other sewage issues, you’ll need a plumber to help fix them. Plumbers in Boston charge $120 to $300 per hour.
You won’t get a return on investment (ROI) after septic tank pumping. But regardless, would-be homebuyers will expect septic systems to be properly maintained and in good working order. Septic tanks have a long lifespan when properly cared for, which can make your home easier to sell, even if tank pumping doesn’t directly increase property value.
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
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