My neighbor’s OSWTF is located on my property. What do I do?
You and your neighbor must contact the Maricopa County Environmental Services Department to obtain the necessary permits and instructions to install a new system on your own lot. If a lot split occurs and the OSWTF no longer meets any minimum setback requirement, the system must be relocated. Additional inspections, plan reviews and fees may apply.

If a lot split had taken place prior to your ownership and the property line now cuts through the existing OSWTF (or the neighbor’s OSWTF), splitting the system between the two lots, the issue then becomes a legal matter. In these cases, it is recommended that you contact legal counsel or your real estate agent to obtain advice on how to rectify the situation. In most cases, each lot will be required to install an OSWTF.

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?