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TRUSTED BY LANCASTER, MA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon65
    Verified septic tank services reviews

Top-Rated Septic tank pros in Lancaster - Updated Nov 2026

Avatar for Blackstone Septic Service
Blackstone Septic Service
4.8(
23
)
Septic System - Repair - For BusinessSeptic Tank - Clean or Pump Out

Serving Lancaster, MA and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"We are very pleased with the service provided by Blackstone septic service. Matt arrived on time. He was very knowledgeable and we are very pleased with the service he provided. We would definitely use them again in the future."
Response time10 hrs
Recommended by94%of homeowners
Avatar for R Cox Enterprises
R Cox Enterprises
5.0(
5
)
Septic System - Install or ReplaceSeptic System - RepairSeptic System - Install or Replace - For Business+1 more

Serving Lancaster, MA and surrounding areas

Approved

In business since 2010

Free estimates

Small jobs welcome

"We needed a completely re-engineered septic system at our house in Wales, and Ron helped us with every aspect of the project. From his initial recommendation of an engineer who custom designed our system, to the installation of our holding tank, pump tank, and leaching field, Ron exceeded our expectations every step of the way. Ronâ s crew was courteous and professional, his pricing was fair, and I am confident recommending him to my friends and neighbors!"
Response time1 day
Response rate93%
9 neighbors recently requested a quote
Avatar for Schofield Environmental
Schofield Environmental
4.2(
9
)
Septic System - Install or Replace

Serving Lancaster, MA and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"By Andrew v. Engineer Dave Schofield of Capstone displayed professionalism by turning a flawed design for our Sudbury septic system into one highly adaptive and functional. He was purposeful about doing the right thing even when not winning installation contract, execution of which he in in fact supervised. In a business which includes its share of uneven performers, Schofield’s competence is a stand-out."
Response time4 hrs
Response rate100%
Recommended by55%of homeowners
Kennelly Construction, Corp.
4.8(
6
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Lancaster, MA and surrounding areas

Approved

In business since 1973

Free estimates

Small jobs welcome

Here at Kennelly Construction, Corp., we pride ourselves on providing quality service that customers can believe in. Whether it's excavation, to septic systems, we can take care of all your home's needs. With over 50 years of experience, we offer both residential and commercial services. Give us a call for a free estimate, we look forward to working with you!

Response time10 hrs
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Watatic Septic Tank Service LLC
Watatic Septic Tank Service LLC
5.0(
5
)
Septic System - RepairSeptic System - Repair - For BusinessSeptic Tank - Clean or Pump Out+1 more

Serving Lancaster, MA and surrounding areas

In business since 2024

Free estimates

Emergency services offered

"Hayden first came because my septic overflowed a little--he found the blockage, fixed it, took a video of it so I could see it, and charged me very reasonably--on the weekend! Then he came back, did my Title V inspection and pumped me out. Again very prompt, thorough, meticulous. I highly recommend him. Easy to work with, reliable, *very* responsive."
Response time4 hrs
Response rate86%
Avatar for Provost Plumbing
Provost Plumbing
4.6(
155
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+3 more

Serving Lancaster, MA and surrounding areas

In business since 1960

Free estimates

Emergency services offered

"Sorry, looks like this review got stuck in draft mode for quite a while. But the good thing about that is everyone gets to read a review with an update 1.5 years later on the quality of the work completed! In late 2020 I had recently moved into my new home and the gas water heater wasn't working properly. It was leaky and at least needed the pressure relief valve replaced, but the tank was well past it's expected lifetime. The techs were very helpful, kind and knowledgeable. The valve replacement wasn't going to work because repairing the tank could damage it further, so the tank was replaced instead. The price was very reasonable and installation was done really well. They did a great job with cleanup too! One and a half years later and the tank has had zero issues! I would definitely recommend them for heavy jobs like this or more simple ones around the house. Thank you very much!"
Recommended by90%of homeowners
Avatar for S&G Excavating
S&G Excavating
5.0(
6
)
Septic System - Install or ReplaceSeptic System - Repair

Serving Lancaster, MA and surrounding areas

In business since 2020

Free estimates

"I have never experienced a more professional company than this one. These guys are top tier when it comes to septic repair. They walked me through everything that they were gonna do before they did it, so I wasnâ t confused what was happening. There pricing compared to other companyâ s is unbeatable. I would definitely hire these guys again in the future!"
Distribution Box Repair
Distribution Box Repair
Distribution Box Repair
Distribution Box Repair
Distribution Box Repair

+9

Recommended by100%of homeowners
Showing 1-10 of 40
Septic Tanks FAQs, answered by experts

Yes, a bigger well pump can increase water pressure—up to a point. If you currently have a well pump of 8 GPM, you might notice a pressure boost when you go up to 10 GPM. However, overshooting significantly (going up to 15 GPM for an 8 GPM home) can strain your well system and result in things like burst pipes that can decrease your water pressure and make for costly repairs.

Bladder and diaphragm well pressure tanks are usually pre-charged at the factory. Even so, it’s important to check the air pressure in the tank using a tire pressure gauge on the relief valve. The instruction manual usually calls for 28 psi. Use a hand pump to add more air or release some air from the tank to reach the desired number. Check the pressure periodically to see if you need to add more air to the tank.

Yes, septic tank companies must be licensed in most states and municipalities to perform services like installation, alteration, repair, and pumping. Since laws vary by location, it's crucial to check local requirements.

Hiring an unlicensed professional can lead to poor work, code violations, and significant fines. Always verify that your chosen company is properly licensed and fully insured to avoid liability. You can use tools like Angi’s contractor licensing search to check a pro's credentials.

It's also helpful to understand the difference between licensing and certification. A license is a legal requirement to operate, while certifications are voluntary. Credentials like the “Angi Approved” badge indicate that a business meets extra standards, such as passing a background check and maintaining a high rating.

An outdoor water valve typically has a round or oval handle that you can turn to control the water flow. It may be located in a protective box or pit near the property line, where the main water line connects to your house.

Septic tanks appear full after pumping because the liquid levels have returned to normal. If you can see the pipe, the tank is empty. However, heavy rain can cause septic tanks to fill faster than normal. You might also have leaky pipes or faucets, causing extra water to drip down the drains and into the septic tank.

The Lancaster, MA homeowners’ guide to septic tank services

From average costs to expert advice, get all the answers you need to get your job done.