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We're #1 in the #2 Business 
Licensed, Bonded and Insured


Professional-Grade Plumbing and Septic Services

Serving Residential and Commercial Clients

Sewer and Drain Work

Sewer and Drain Work

We specialize in sewer, drain, and plumbing work of every kind, including clogs, electric sewer cabling, leaks, drain and sewer cleaning, water heaters, and much more.

Septic Tanks Services

Septic Tanks

O'Fallon Sewer Service is your one-stop shop for all types of septic services, including preventive maintenance, tank pumping, installation, cleaning, and full-scale repair. Get your FREE estimate.

Portable Toilets

Portable Toilets

Are you planning a wedding or a special outdoor event? Is your construction project going to take a long time? No matter your situation, we have portable toilet rental options for you.


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