On Site Plumbing & SepticSeptic service company in Atascadero, CA

On Site Plumbing & Septic is ranked #4 of 13 septic service companies in Atascadero by CR Score, with 58 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.

On Site Plumbing & Septic is open Monday to Friday. Its listed hours are Monday to Friday, 7 AM – 7 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Atascadero and 10 towns within 25 miles: Los Osos, Morro Bay, San Luis Obispo, Templeton, Pismo Beach, Grover Beach, Arroyo Grande, Oceano, Paso Robles and Cambria. 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.

On Site Plumbing & Septic has a rating of 4.8 from 19 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 On Site Plumbing & Septic on (805) 464-7332. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.