Why do Onsite Wastewater Treatment Facilities fail?
Most system failures are related to inappropriate design and poor maintenance. Soil-based systems (with a drain field) may have been installed at sites with inadequate or inappropriate soils, excessive slopes, or high ground water tables. These conditions can cause hydraulic failures and water resource contamination. Failure to perform routine maintenance can cause solids or greases and oils in the tank to migrate into the drain field and clog the system.

The easiest way to ensure the longevity of your septic system is to routinely pump the tank every three to five years, not dump unapproved products into the system, and clean the effluent filter inside the tank every six to twelve months.

Show All Answers

1. How do Onsite Wastewater Treatment Facilities (OSWTFs) work?
2. Why do Onsite Wastewater Treatment Facilities fail?
3. What items should not be put down the drain?
4. Do Onsite Wastewater Treatment Facilities (OSWTFs) cause health or water quality problems?
5. Can I apply for a permit to drill a well at the same time I apply for the Onsite Wastewater Treatment Facilities (OSWTF) permit?
6. My neighbor’s OSWTF is located on my property. What do I do?
7. What is an alternative system?
8. What are the different types of alternative systems allowed in Maricopa County?
9. Do I have to hire an engineer to design my system and draft my plans?
10. Can I make changes after I have submitted the NOID packet?
11. Can I make changes to an approved plan?
12. Can I request a partial construction inspection?
13. What type of rock should I use in the trenches, beds, or pits?
14. What are the requirements for installing a septic tank?
15. What are the requirements for installing the distribution box?
16. What are the requirements for installing the disposal field?
17. My system is failing. What do I do?
18. Can I use the existing septic system for my new house?
19. When can you release my building permit?