What is an Individual Onsite Wastewater System?

An Individual Onsite Wastewater System is usually termed a septic tank or a treatment plant.  All systems consist of a tank in which the primary treatment occurs, and one or more dispersal systems in which the water is dispersed so it can be absorbed.  There are many different types of systems which are described elsewhere on this website.What is the role of the Mississippi Department of Health in wastewater systems?

What is the role of the Mississippi Department of Health?

MDH is responsible for regulation of individual wastewater systems.  This includes small commercial buildings, restaurants and single dwellings.  The Department of Environmental Quality regulates all other wastewater systems, such as clusters and central sewers. 

What is the Responsibility of the Homeowner?

The homeowner is responsible for the selection of the initial system to be installed.  The homeowner is also responsible for the continued proper functioning of the system.  This includes keeping the wastewater from leaving the property.

What is the Responsibility of the Wastewater Installer?

The installer is responsible for the correct installation of the system selected by the homeowner from the list provided by the Department of Health.  The homeowner is also charged under state law with filing an Installer Affidavit after installation with the Department of Health.

How can I find an Installer?

This website has a database of licensed installers, certified maintenance companies and licensed septic tank pumpers.  The department makes no recommendations of installers.

Can I install my own system?

Yes, the homeowner can install the wastewater system.  If you are using a licensed plumber, check that he is also a licensed wastewater installer.  Not all plumbers are licensed wastewater installers.

Who else is involved in the process?

You will need documentation from us before you can get a drinking water connection.  In about 20 counties, there is also a building code office which issues building permits and also requires our documentation.

How can I get a water connection for farm or yard use only?

We only regulate wastewater, so if you will not live on the property or have a bathroom, we can approve this circumstance.  You must complete a Disclaimer Form and file it with the local health department.

Do I have to install a wastewater system in my deer camp?

You are required to install a wastewater system if you generate wastewater from a building that has access to a public water supply.  A deer camp or similar building without running water can utilize a pit privy.

What do I do when I have a complaint?

A wastewater complaint can be filed online from this website or by using the form available from any local health department.  We will investigate your complaint and take any necessary action.

How can I find out which property requires an Individual Onsite Wastewater System?

This website has some information about the wastewater status of subdivisions, however this information is also available from the developer, real estate agent or previous owner.

I am buying an existing house; do I need approval?

Yes, most lending agencies will require an inspection by us of an existing house before the loan closing.  This is just another inspection to minimize the risk to lender.  Please allow us time to do the inspection before setting the closing date.

If my system is disapproved, what do I do?

If a system is disapproved, we will do a soil site evaluation of your lot and make recommendations about repair options you have for your site.  This may require the acquisition of additional land or installation of a completely new system.

Why did I get a Temporary Approval?

We can only determine if a system is working if the house is occupied.  If a house have been vacant for any length of time, we will issue a temporary approval.  For a system with underground absorption we will re-inspect at 180 days, for a treatment plant with an above ground discharge we will re-inspect in 30 days.