Septic DiagnosticsSeptic service company in Sarnia, ON

Septic Diagnostics is ranked #9 of 15 septic service companies in Sarnia by CR Score, with 56 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.

Septic Diagnostics 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 Sarnia and 3 towns within 40 km: Corunna, Camlachie and Petrolia. 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.

Septic Diagnostics has a rating of 4.9 from 11 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 Septic Diagnostics on (226) 349-6263. The business is at 335 Brock St S, Sarnia, ON N7T 2W7. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.