Document Library
Necessary, inc. has started to assemble a collection of documents to help our clients to assess their needs and help us help you.
Operation and Maintenance Guide for Conventional Absorption On-site Sewage Facilities - Septic_Standard.pdf
O & M Guide for Mound Type On-Site Sewage Facilities - Septic_Mound.pdf
O & M Guide for Low Pressure Dosed Trench On-site Sewage Facilities - Septic_LPD.pdf
O & M Guide for On-site Sewage Facilities with Aerobic Treatment Units and Spray Irrigation - Aerobic_Spray.pdf
O & M Guide for On-site Sewage Facilities with Aerobic Treatment Units and Low Pressure Dosed Disposal Trenches - Aerobic_LPD.pdf
O & M Guide for Drip Emitter On-Site Sewage Facilities - Aerobic_Drip.pdf
Preparation of the On-Site Sewage Facility for Inspection - Prep_Inspection.pdf
Request Records from Travis County (form no longer required)
To get on-site sewage facility records from Travis County, email tnr.openrecords@co.travis.tx.us and request digital copies of the on-site sewage facility records for a particular address.
Request Records from Hays County - HaysCoRcdReq.pdf
To get on-site sewage facility records from Hays County, complete this form and email it to permits@co.hays.tx.us
Resources On the Web
Necessary, inc. has listed links to web sites that can provide additional infomation about On-site Sewage Facilities and regulations that might pertain to your system/location.
City of Austin Water Utility OSSF Program
"Water Utility" was previously called the "Water and Wastewater Department" http://www.austintexas.gov/ossf
LCRA's OSSF Program
https://www.lcra.org/water/permits-contracts/on-site-sewage/
Williamson County Engineer
Williamson County On-Site Sewage Facilities Program http://www.wilco.org/ossf
Hays County Environmental Health
Hays County On-Site Sewage Facilities Program https://hayscountytx.com/departments/development-services/
TCEQ (TNRCC) Onsite program
https://www2.tceq.texas.gov/lic_dpa/index.cfm?fuseaction=licall.searchindiv
How to find a licensed OSSF installer or site evaluator
https://www.tceq.texas.gov/permitting/ossf
Texas AgriLife Extension (A & M Extension Service)
Excellent information and Fact Sheets. http://ossf.tamu.edu/onsite-wastewater-treatment-systems-owts/
EPA Onsite Manual
This link should give the latest version of the EPA Onsite Wastewater Treatment Systems Manual. Scroll down to "Manuals" and click on the link. http://www.epa.gov/septic/onsite-wastewater-treatment-and-disposal-systems
National Environmental Services Center (Small Flows Clearinghouse)
http://www.nesc.wvu.edu/subpages/septic.cfm
National On-site Wastewater Recycling Association
http://www.nowra.org/
TCAD
Travis Central Appraisal District - Property information for Travis County. http://www.traviscad.org/
WCAD
Williamson Central Appraisal District - Property information for Williamson County. http://www.wcad.org/
Bastrop County Tax Office
Property information for Bastrop County http://www.bastroptac.com/
Hays County Appraiser's Office
Hays Central Appraisal District http://www.hayscad.com/