Necessary, Inc. offers careful, thoughtful, and responsible design, inspection, and consulting services for on-site sewage facilities (OSSF) in Austin and Central Texas. We perform mortgage resale inspections which is also referred to as certification. Necessary is more than qualified to provide new facility design for your next project. Additionally, Necessary can also help you with complete consulting or troubleshooting.

Janet Dunkelberg, R.S. has more than 38 years experience and is the principal of Necessary, Inc. She has done extensive inspecting, evaluating, and designing of on-site sewage facilities. She has performed hundreds of resale reinspections of on-site sewage facilities. Janet combines a native Austinite's knowledge of the varying geophysical conditions found in Central Texas, a degree in biology, and extensive experience with the rules and regulatory processes of each jurisdiction in the region. She is a Site Evaluator licensed by TCEQ and a Registered Sanitarian.

Necessary, Inc. hopes that this site will be helpful to anyone needing information about on-site sewage facilities. We have compiled a list of links that provide access to most if not all of the web sites of the agencies involved with the operation and regulation of these facilities. We also try to provide the answers to the most common questions people have when having to deal with them. Please feel free to contact us if you need help with your system or future septic system needs.