Coulter WasteSeptic service company in Oshawa, ON

Coulter Waste is ranked #11 of 30 septic service companies in Oshawa by CR Score, with 54 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Coulter Waste is open Monday to Friday. Its listed hours are Monday to Friday, 9 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Oshawa and 6 towns within 40 km: Uxbridge, Pickering, Ajax, Lindsay, Markham and East Gwillimbury. The list is based on the business's location and the usual service radius for septic and sewer service. Confirm your address is covered when you call.

Coulter Waste has a rating of 4.2 from 24 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Coulter Waste on (905) 433-8681. The business is at 1869 Scugog St, Port Perry, ON L9L 1J1, Oshawa, ON. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.