Cosby's Septic & Excavating Services Ltd has specialized in residential and commercial wastewater disposal, new installations of septic systems, holding tanks and repairs since 1960. We have been providing this service through 3 generations. We are experts in our trade, Cosby Septic & Excavating not only has a vast knowledge of the business but we have the best equipment and staff available to get the job done right.

We are Fully Licensed Septic/Holding Tank Installers, Designers, Inspectors and Pumpers. Our company operates from Sherkston, Ontario. Contact us today 905.894.2741 for an estimate. Cosby's Septic & Excavating Services's licened experts specialized in residential and commercial wastewater disposal, new installations of septic systems, holding tanks and repairs since 1960.

The company operates from Sherkston, Ontario. Proudly serving the Niagara Region for over 50 years!

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At Cosby Septic and Excavating Services Ltd, we offer a variety of septic services to residential and commercial clients in the Niagara Region and Golden Horseshoe. Whether you own a large home just outside of town, a small waterfront cottage, a hobby farm or a commercial establishment, we've got the equipment, knowledge and experience for any sized project.

Reviews (9)

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Kyle Johnson

Jul 09, 2021

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We lined up Cosby to install a holding tank in Wainfleet back in May. After securing the permit, matt was lined up to complete the work. Next week, next week, next week was the answer we got for a month. No problem, we waited. After a month, we expected matt to reach out and never did so we decided to call the plumber he said he lined up. The plumber was not aware of our project. He then stated the tank at Moody's had a long lead time, so we called Moody's and our specific tank could be ready in less than a week if ordered. Once matt came to take some 'final' measurements (we believe these were

Lee Macsai

Sep 14, 2020

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Fast and efficient!! Helped us out on Easter weekend! Great service and just a great guy!!

Trish Hogg

Jul 23, 2020

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Positive: Professionalism, Punctuality, Quality, Responsiveness
Cosby Septic assisted us in an Emergency related to our Septic System. They arrived promptly, diagnosed the problem and went about figuring how to fix it. They had us up and running within the day. Very professional! We very much appreciated their excellent service!
Services: Find & repair leak, Repair outdoor systems, Repair sewer

Marion Morrison

Jun 01, 2019

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Outstanding service! Cosby's showed up as scheduled, and despite a recent heavy snowfall from the night before, they got right to work. The septic lids were dug up, the septic pumped and risers installed all in a timely manner at a very reasonable cost. Definitely recommend them and will use them again.

Rick Wilsher

Oct 25, 2018

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Best service period...from answering calls to actually showing up for appointments. I had booked one company and they were a no show...second an answering service took my call and no return call....I searched best septic company and these guys came up....I called they answered and showed up and were very kind and informative. These guys have my business as long as Iive here.....

Judy Curtiss

Dec 05, 2017

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After a no show and no returning of calls from another septic/excavating company, I thought I would give Cosby's a call and they came out immediately to my elderly parent's place who were dealing with a sinkhole from a broken drainage pipe. These guys were friendly and carefully evaluated the situation. They had a couple of other appointments that afternoon but assured us they would be back right after them to hook up new pipe where the break was. This was a great relief to my parents and myself as there was rain in the forecast. They came back just as promised and did a fantastic job for a very

T. P.

Sep 23, 2017

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Matt has great expertise and handled our large job like a pro. He was always very professional and collegial. We would highly recommend Cosby Septic! Thanks Matt!

Derek Lee

Jan 04, 2017

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Major septic backup after hours called and they got back to me immediately. Came out and fixed problems. Have used before and would highly recommend this company.

April Sadowski

Dec 10, 2016

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We had a septic tank issue on New Year's eve day. Cosby's was fantastic. They came to our house immediately and fixed the problem. Excellent service. Thank you so much!