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  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon12
    Verified septic tank services reviews

Find Septic tank pros in Cornwall

Avatar for H L Bowman
H L Bowman
4.7(
413
)
Septic Tank - Clean or Pump OutSeptic System - Install or ReplaceSeptic System - Repair

Serving Cornwall, PA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Replaced a tank water heater, the door was too narrow so first pitched removing framing with no guarantee that it’d be replaced correctly. I suggested using a smaller sized unit based on a quote from another plumber which is the route we went. They also covered the overage for the additional cost of the smaller sized unit which was nice but if I wasn’t aware of the option I’m not sure what I would have done. They also only sent one person initially so I helped bring the old unit down and the new one up in between trying to work. Also the breaker to the hot water heater was never flipped back so I’m waiting to see how the unit performs now."
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+6

1048 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for C&H Excavating, LLC
C&H Excavating, LLC
4.0(
11
)
Septic System - Install or Replace - For Business

Serving Cornwall, PA and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

C&H Excavating, LLC is committed to excellence in every aspect of our\nbusiness. We uphold a standard of integrity bound by fairness, honesty,\nand personal responsibility. Our distinction is the quality of service\nwe bring to our customers. Accurate knowledge of\nour trade combined with ability is what makes us true professionals.\nAbove all, we are watchful of our customers' interests and make their\nconcerns the basis of our business.

Response time1 day
Recommended by100%of homeowners
Avatar for 1 Tom Plumber Harrisburg
1 Tom Plumber Harrisburg
3.7(
3
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For Business

Serving Cornwall, PA and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

1 Tom Plumber is a full-service plumbing company committed to providing fast, reliable, and professional plumbing services for homeowners and businesses. Our licensed technicians arrive on time, communicate clearly, and present straightforward options so customers can make confident decisions about their plumbing needs.\n\nWe handle everything from everyday repairs to complex projects, including drain cleaning, sewer and water line repairs, water heater installation, pipe replacement, and emergency plumbing services. Using modern equipment and proven methods, our team works efficiently while maintaining high standards of quality and safety.\n\nAt 1 Tom Plumber, we believe great service means honest pricing, dependable workmanship, and treating every customer with respect. Our goal is to solve problems the right way the first time and build long-term relationships through service you can trust.

10 neighbors recently requested a quote
Avatar for Snydco Mechanical Services
Snydco Mechanical Services
New to Angi
Septic System - Install or Replace - For BusinessSeptic System - Repair - For Business

Serving Cornwall, PA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

We're dedicated to providing our clients with the very best in service, installation, and repair for all of your heating, cooling and plumbing needs.. We take pride in the attention to detail put into each of the projects we're involved with. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. Please contact us for a free in-home evaluation and estimate.

Response time12 hrs
Avatar for Sonlight Services
Sonlight Services
4.9(
18
)
Septic Tank - Clean or Pump OutSeptic Tank - Clean or Pump Out - For Business

Serving Cornwall, PA and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"Jeremy was courteous and professional. He took the time after pumping the septic to check for our clogged system and did an excellent job making sure it was ok before leaving. Highly recommend!"
Response time1 day
Response rate88%
Recommended by100%of homeowners
Nelson L. Ziegler Excavating, Inc
3.7(
9
)
Septic System - Install or ReplaceSeptic System - Install or Replace - For BusinessSeptic System - Repair+1 more

Serving Cornwall, PA and surrounding areas

In business since 1972

Free estimates

Credit card accepted

"We contacted Nelson Zeigler to install a septic system that failed a real estate sale inspection. We needed the job quickly and he worked with making our time frame work so we were able to settle on time. He did excellent work and we would recommend him to anyone needing a septic system installed."
Response time2 days
Recommended by85%of homeowners
Showing 1-10 of 33
Septic Tanks questions, answered by experts

Needing to pump the tank as soon as it “looks” full is a common myth about septic systems, as wastewater will eventually drain into the leach field. Instead, it’s better to determine how many solids have accumulated. A septic maintenance technician near you can test this to find out whether pumping is necessary.

Options include submersible, jet, and centrifugal pumps. Choose based on water needs and well depth.

Several things can ruin a septic tank over time, including dumping harsh chemicals (like bleach and ammonia), pesticides, and paint thinners down your drain because they can kill the bacteria in your septic tank. You should also make sure to only flush waste and toilet paper in your toilet—otherwise, you could clog your system.

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.

Yes, shower water goes into the septic tank. Shower water is a type of greywater, and in fact, all water used in a home with a septic system—including water from sinks, toilets, the dishwasher, and the washing machine—drains into the tank. When shower water enters the tank, debris like soap and hair travels with it. The solid debris sinks to the bottom to become sludge, while soap residue joins the scum layer at the top. The remaining water is treated in the tank before moving to the drain field for further treatment and dispersal. It is important to avoid putting oil or harsh chemicals down any drain, as they can cause clogs or disrupt the beneficial bacteria required for proper wastewater management in the septic system.

The Cornwall, PA homeowners’ guide to septic tank services

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