OSSF Contractors & Maintenance Providers

The Town of Flower Mound requires that all septic systems utilizing secondary treatment, e.g. chlorination and oxygen, have an on-going maintenance contract at all times. As a requirement of state law and by local ordinance, maintenance providers must be licensed by the state and registered with the town annually.

The following link is a current list of registered OSSF contractors and maintenance providers in the Town. Please note, this is not an endorsement or recommendation of any of the listed contractors. 
 Registered OSSF Contractors

Governmental Agencies

Town of Flower Mound Environmental Health

Environmental Health Services is the branch of local government charged with protection of environmental health through oversight of the food and public pool programs, mosquito program, and On-Site Sewage Facility program. Please contact EHS at 972-874-6340 or visit the town web page at Questions or concerns may also be sent via email to

Texas Commission On Environmental Quality:

The Texas Commission on Environmental Quality (TCEQ) is the environmental agency for the state. The Texas Commission on Environmental Quality strives to protect our state's public health and natural resources consistent with sustainable economic development. Our goal is clean air, clean water, and the safe management of waste.

Environmental Protection Agency:

The mission of EPA is to protect human health and the environment.

Texas Department of State Health Services:
To improve health and well-being in Texas.

Denton County:

The Environmental Health Division of the Denton County Health Department administers the Denton County on-site sewage facility (OSSF) order throughout the unincorporated portions of Denton County. This involves reviewing OSSF designs, issuing permits to construct, conducting specialized final inspections and enforcing the applicable rules and regulations. We advise contractors and property owners of essential public health protection practices. We carry out our duties by respecting citizens, maintaining fiscal responsibility, demonstrating accountability, and fairly and equitably allocating resources.

Centers for Disease Control:

The Centers for Disease Control and Prevention (CDC) serves as the national focus for developing and applying disease prevention and control, environmental health, and health promotion and health education activities designed to improve the health of the people of the United States.

Occupational Health & Safety Administration:

With the Occupational Safety and Health Act of 1970, Congress created the Occupational Safety and Health Administration (OSHA) to assure safe and healthful working conditions for working men and women by setting and enforcing standards and by providing training, outreach, education and assistance.

Rules, Regulations, Laws

Town of Flower Mound Ordinance 56-10-

Texas Administrative Code- 30 Tac Chapter 285 On-Site Sewage Facilities-$ext.ViewTAC?tac_view=4&ti=30&pt=1&ch=285

Epa Septic Smart-

30 TAC 30 Subchapter G-$ext.ViewTAC?tac_view=5&ti=30&pt=1&ch=30&sch=G&rl=Y


Texas Health & Safety Code Chapter 366- On-Site Sewage Facilities


Water quality-


Personal Protective Equipment-


Emergency repairs$ext.TacPage?sl=R&app=9&p_dir=&p_rloc=&p_tloc=&p_ploc=&pg=1&p_tac=&ti=30&pt=1&ch=285&rl=35
Duties of owners of malfunctioning systems-$ext.TacPage?sl=R&app=9&p_dir=&p_rloc=&p_tloc=&p_ploc=&pg=1&p_tac=&ti=30&pt=1&ch=285&rl=70

Disposal of Graywater-$ext.TacPage?sl=R&app=9&p_dir=&p_rloc=&p_tloc=&p_ploc=&pg=1&p_tac=&ti=30&pt=1&ch=285&rl=80$ext.TacPage?sl=R&app=9&p_dir=&p_rloc=&p_tloc=&p_ploc=&pg=1&p_tac=&ti=30&pt=1&ch=285&rl=81