About OSO Liquid Waste

OSO Liquid Waste is a division of OSO Construction, which is a locally owned and operated residential and commercial construction company founded in 2006, serving San Antonio, Floresville, and La Vernia areas.

OSO Liquid Waste is a highly respected provider of portable sanitation equipment and septic services in Bexar County & Wilson County, Texas. We’re locally owned, and we’re proud to be recognized as a top rated contractor in the area. We have the ability to meet the needs of all types of customers, from large commercial contractors to residential home builders and homeowners.

We treat every customer with the utmost courtesy, respect and professionalism. Our service-centric philosophy has earned us the reputation as a premier choice for septic tank services and portable toilet rentals.

Locally Owned

We are a locally owned and operated business.  We live in Floresville and proudly serve Wilson and Bexar Counties.

Customer Satisfaction

We value our customers and commit to being on-time, every time.  We have an old fashioned way of serving our customers and pride ourselves on referrals.

Referral Promotion

Refer us to someone and we will send you a $25 gift card as a small token of our thanks.

Call Us!

Have a question or want to discuss your specific situation, call us!

210-707-0038 or 210-602-2403