A v-shaped opening usually found on one side of a weir. The v-notch provides a means of controlling flow into the weir and separating solids from the final effluent.

Anything that isn’t liquid that enters the treatment system. Solids can be trash or sludge.

The Colorado River Authority for septic (OSSF) in Texas refers to the Lower Colorado River Authority.
LCRA is an authorized agent of TCEQ that regulates septic systems in specific parts of Central Texas—mainly within its river basin and water-supply protection zones. It does not regulate all areas of those counties, only the portions under its jurisdiction (typically around lakes, watersheds, and certain unincorporated areas).

The Lower Colorado River Authority. It generally presides over portions of areas that are around lakes, watersheds etc.

LCRA’s OSSF program primarily covers parts of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

San Saba County

Lampasas County

Blanco County (partial)

Colorado County (partial)

LCRA OSSF program page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

TCEQ authorized agent list:
👉 https://www.tceq.texas.gov/permitting/ossf

When not served by city sewer and within LCRA jurisdiction:

Around Lake Travis / Highland Lakes

Marble Falls

Lago Vista

Jonestown

Briarcliff

Horseshoe Bay

Sunrise Beach Village

Granite Shoals

Bastrop area

Bastrop (ETJ areas)

Smithville (ETJ areas)

Fayette County area

La Grange

Flatonia

Schulenburg

Lower basin / coastal

Bay City area

Matagorda area

Important:
Inside city limits, cities often regulate septic, but many defer to LCRA in ETJ or watershed zones.

Where LCRA is the authorized agent, it:

Issues septic permits

Reviews system design

Performs inspections

Enforces maintenance

Regulates repairs

Protects water-supply watersheds

They act just like a county OSSF office.

When LCRA Has Authority vs County

Important for Your Operations

LCRA jurisdiction is location-specific, not county-wide.

If working in Central Texas, always check:

Inside city limits?

In LCRA watershed?

County jurisdiction?

Quick way to check if a property is LCRA-regulated

Use their contact page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

Or call LCRA OSSF office with address.

Lower Colorado River Authority (LCRA) — Contact Information

Main Headquarters

Lower Colorado River Authority (LCRA)
3700 Lake Austin Blvd
Austin, TX 78703

Mailing Address

LCRA
P.O. Box 220
Austin, TX 78767-0220

OSSF / Septic Program Contact

LCRA On-Site Sewage Facility (OSSF) Program

Phone: 512-578-3216
Toll-free: 800-776-5272 ext. 3216
Fax: 512-578-3501
Email: ossf@lcra.org

OSSF Mailing Address

LCRA – OSSF Program
P.O. Box 220
Austin, TX 78767-0220

General LCRA Contact

Main Phone: 512-578-3200
Toll-free: 800-776-5272

General contact form:
https://www.lcra.org/contact-us/

Office Hours

Typical administrative hours:
Monday–Friday: 8:00 AM – 5:00 PM (Central)
(standard business hours for LCRA offices)

Primary Contact (OSSF Program)

There is not a single named statewide contact for septic permitting.
Use:

OSSF Program Office
Phone: 512-578-3216
Email: ossf@lcra.org

They route calls to the correct regional inspector.

Areas Served for Septic (OSSF)

LCRA regulates septic in specific watershed and lake-protection zones, not entire counties.

Typical coverage includes portions of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

Lampasas County

San Saba County

Colorado River basin / Highland Lakes region

They regulate installation and operation of septic systems in zones around:

Lake Travis

Highland Lakes

Certain Colorado River watershed areas

Use this map to check jurisdiction:
https://waterquality.lcra.org/ossf/

When to Contact LCRA

Contact LCRA instead of the county when a property is:

Near Lake Travis or Highland Lakes

In LCRA watershed protection zones

In ETJ areas where LCRA is the authorized agent

They handle:

Septic permits

Inspections

Repairs requiring permits

Maintenance enforcement

A v-shaped opening usually found on one side of a weir. The v-notch provides a means of controlling flow into the weir and separating solids from the final effluent.

Anything that isn’t liquid that enters the treatment system. Solids can be trash or sludge.

The Colorado River Authority for septic (OSSF) in Texas refers to the Lower Colorado River Authority.
LCRA is an authorized agent of TCEQ that regulates septic systems in specific parts of Central Texas—mainly within its river basin and water-supply protection zones. It does not regulate all areas of those counties, only the portions under its jurisdiction (typically around lakes, watersheds, and certain unincorporated areas).

The Lower Colorado River Authority. It generally presides over portions of areas that are around lakes, watersheds etc.

LCRA’s OSSF program primarily covers parts of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

San Saba County

Lampasas County

Blanco County (partial)

Colorado County (partial)

LCRA OSSF program page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

TCEQ authorized agent list:
👉 https://www.tceq.texas.gov/permitting/ossf

When not served by city sewer and within LCRA jurisdiction:

Around Lake Travis / Highland Lakes

Marble Falls

Lago Vista

Jonestown

Briarcliff

Horseshoe Bay

Sunrise Beach Village

Granite Shoals

Bastrop area

Bastrop (ETJ areas)

Smithville (ETJ areas)

Fayette County area

La Grange

Flatonia

Schulenburg

Lower basin / coastal

Bay City area

Matagorda area

Important:
Inside city limits, cities often regulate septic, but many defer to LCRA in ETJ or watershed zones.

Where LCRA is the authorized agent, it:

Issues septic permits

Reviews system design

Performs inspections

Enforces maintenance

Regulates repairs

Protects water-supply watersheds

They act just like a county OSSF office.

When LCRA Has Authority vs County

Important for Your Operations

LCRA jurisdiction is location-specific, not county-wide.

If working in Central Texas, always check:

Inside city limits?

In LCRA watershed?

County jurisdiction?

Quick way to check if a property is LCRA-regulated

Use their contact page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

Or call LCRA OSSF office with address.

Lower Colorado River Authority (LCRA) — Contact Information

Main Headquarters

Lower Colorado River Authority (LCRA)
3700 Lake Austin Blvd
Austin, TX 78703

Mailing Address

LCRA
P.O. Box 220
Austin, TX 78767-0220

OSSF / Septic Program Contact

LCRA On-Site Sewage Facility (OSSF) Program

Phone: 512-578-3216
Toll-free: 800-776-5272 ext. 3216
Fax: 512-578-3501
Email: ossf@lcra.org

OSSF Mailing Address

LCRA – OSSF Program
P.O. Box 220
Austin, TX 78767-0220

General LCRA Contact

Main Phone: 512-578-3200
Toll-free: 800-776-5272

General contact form:
https://www.lcra.org/contact-us/

Office Hours

Typical administrative hours:
Monday–Friday: 8:00 AM – 5:00 PM (Central)
(standard business hours for LCRA offices)

Primary Contact (OSSF Program)

There is not a single named statewide contact for septic permitting.
Use:

OSSF Program Office
Phone: 512-578-3216
Email: ossf@lcra.org

They route calls to the correct regional inspector.

Areas Served for Septic (OSSF)

LCRA regulates septic in specific watershed and lake-protection zones, not entire counties.

Typical coverage includes portions of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

Lampasas County

San Saba County

Colorado River basin / Highland Lakes region

They regulate installation and operation of septic systems in zones around:

Lake Travis

Highland Lakes

Certain Colorado River watershed areas

Use this map to check jurisdiction:
https://waterquality.lcra.org/ossf/

When to Contact LCRA

Contact LCRA instead of the county when a property is:

Near Lake Travis or Highland Lakes

In LCRA watershed protection zones

In ETJ areas where LCRA is the authorized agent

They handle:

Septic permits

Inspections

Repairs requiring permits

Maintenance enforcement

A v-shaped opening usually found on one side of a weir. The v-notch provides a means of controlling flow into the weir and separating solids from the final effluent.

Anything that isn’t liquid that enters the treatment system. Solids can be trash or sludge.

The Colorado River Authority for septic (OSSF) in Texas refers to the Lower Colorado River Authority.
LCRA is an authorized agent of TCEQ that regulates septic systems in specific parts of Central Texas—mainly within its river basin and water-supply protection zones. It does not regulate all areas of those counties, only the portions under its jurisdiction (typically around lakes, watersheds, and certain unincorporated areas).

The Lower Colorado River Authority. It generally presides over portions of areas that are around lakes, watersheds etc.

LCRA’s OSSF program primarily covers parts of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

San Saba County

Lampasas County

Blanco County (partial)

Colorado County (partial)

LCRA OSSF program page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

TCEQ authorized agent list:
👉 https://www.tceq.texas.gov/permitting/ossf

When not served by city sewer and within LCRA jurisdiction:

Around Lake Travis / Highland Lakes

Marble Falls

Lago Vista

Jonestown

Briarcliff

Horseshoe Bay

Sunrise Beach Village

Granite Shoals

Bastrop area

Bastrop (ETJ areas)

Smithville (ETJ areas)

Fayette County area

La Grange

Flatonia

Schulenburg

Lower basin / coastal

Bay City area

Matagorda area

Important:
Inside city limits, cities often regulate septic, but many defer to LCRA in ETJ or watershed zones.

Where LCRA is the authorized agent, it:

Issues septic permits

Reviews system design

Performs inspections

Enforces maintenance

Regulates repairs

Protects water-supply watersheds

They act just like a county OSSF office.

When LCRA Has Authority vs County

Important for Your Operations

LCRA jurisdiction is location-specific, not county-wide.

If working in Central Texas, always check:

Inside city limits?

In LCRA watershed?

County jurisdiction?

Quick way to check if a property is LCRA-regulated

Use their contact page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

Or call LCRA OSSF office with address.

Lower Colorado River Authority (LCRA) — Contact Information

Main Headquarters

Lower Colorado River Authority (LCRA)
3700 Lake Austin Blvd
Austin, TX 78703

Mailing Address

LCRA
P.O. Box 220
Austin, TX 78767-0220

OSSF / Septic Program Contact

LCRA On-Site Sewage Facility (OSSF) Program

Phone: 512-578-3216
Toll-free: 800-776-5272 ext. 3216
Fax: 512-578-3501
Email: ossf@lcra.org

OSSF Mailing Address

LCRA – OSSF Program
P.O. Box 220
Austin, TX 78767-0220

General LCRA Contact

Main Phone: 512-578-3200
Toll-free: 800-776-5272

General contact form:
https://www.lcra.org/contact-us/

Office Hours

Typical administrative hours:
Monday–Friday: 8:00 AM – 5:00 PM (Central)
(standard business hours for LCRA offices)

Primary Contact (OSSF Program)

There is not a single named statewide contact for septic permitting.
Use:

OSSF Program Office
Phone: 512-578-3216
Email: ossf@lcra.org

They route calls to the correct regional inspector.

Areas Served for Septic (OSSF)

LCRA regulates septic in specific watershed and lake-protection zones, not entire counties.

Typical coverage includes portions of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

Lampasas County

San Saba County

Colorado River basin / Highland Lakes region

They regulate installation and operation of septic systems in zones around:

Lake Travis

Highland Lakes

Certain Colorado River watershed areas

Use this map to check jurisdiction:
https://waterquality.lcra.org/ossf/

When to Contact LCRA

Contact LCRA instead of the county when a property is:

Near Lake Travis or Highland Lakes

In LCRA watershed protection zones

In ETJ areas where LCRA is the authorized agent

They handle:

Septic permits

Inspections

Repairs requiring permits

Maintenance enforcement

A v-shaped opening usually found on one side of a weir. The v-notch provides a means of controlling flow into the weir and separating solids from the final effluent.

Anything that isn’t liquid that enters the treatment system. Solids can be trash or sludge.

The Colorado River Authority for septic (OSSF) in Texas refers to the Lower Colorado River Authority.
LCRA is an authorized agent of TCEQ that regulates septic systems in specific parts of Central Texas—mainly within its river basin and water-supply protection zones. It does not regulate all areas of those counties, only the portions under its jurisdiction (typically around lakes, watersheds, and certain unincorporated areas).

The Lower Colorado River Authority. It generally presides over portions of areas that are around lakes, watersheds etc.

LCRA’s OSSF program primarily covers parts of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

San Saba County

Lampasas County

Blanco County (partial)

Colorado County (partial)

LCRA OSSF program page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

TCEQ authorized agent list:
👉 https://www.tceq.texas.gov/permitting/ossf

When not served by city sewer and within LCRA jurisdiction:

Around Lake Travis / Highland Lakes

Marble Falls

Lago Vista

Jonestown

Briarcliff

Horseshoe Bay

Sunrise Beach Village

Granite Shoals

Bastrop area

Bastrop (ETJ areas)

Smithville (ETJ areas)

Fayette County area

La Grange

Flatonia

Schulenburg

Lower basin / coastal

Bay City area

Matagorda area

Important:
Inside city limits, cities often regulate septic, but many defer to LCRA in ETJ or watershed zones.

Where LCRA is the authorized agent, it:

Issues septic permits

Reviews system design

Performs inspections

Enforces maintenance

Regulates repairs

Protects water-supply watersheds

They act just like a county OSSF office.

When LCRA Has Authority vs County

Important for Your Operations

LCRA jurisdiction is location-specific, not county-wide.

If working in Central Texas, always check:

Inside city limits?

In LCRA watershed?

County jurisdiction?

Quick way to check if a property is LCRA-regulated

Use their contact page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

Or call LCRA OSSF office with address.

Lower Colorado River Authority (LCRA) — Contact Information

Main Headquarters

Lower Colorado River Authority (LCRA)
3700 Lake Austin Blvd
Austin, TX 78703

Mailing Address

LCRA
P.O. Box 220
Austin, TX 78767-0220

OSSF / Septic Program Contact

LCRA On-Site Sewage Facility (OSSF) Program

Phone: 512-578-3216
Toll-free: 800-776-5272 ext. 3216
Fax: 512-578-3501
Email: ossf@lcra.org

OSSF Mailing Address

LCRA – OSSF Program
P.O. Box 220
Austin, TX 78767-0220

General LCRA Contact

Main Phone: 512-578-3200
Toll-free: 800-776-5272

General contact form:
https://www.lcra.org/contact-us/

Office Hours

Typical administrative hours:
Monday–Friday: 8:00 AM – 5:00 PM (Central)
(standard business hours for LCRA offices)

Primary Contact (OSSF Program)

There is not a single named statewide contact for septic permitting.
Use:

OSSF Program Office
Phone: 512-578-3216
Email: ossf@lcra.org

They route calls to the correct regional inspector.

Areas Served for Septic (OSSF)

LCRA regulates septic in specific watershed and lake-protection zones, not entire counties.

Typical coverage includes portions of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

Lampasas County

San Saba County

Colorado River basin / Highland Lakes region

They regulate installation and operation of septic systems in zones around:

Lake Travis

Highland Lakes

Certain Colorado River watershed areas

Use this map to check jurisdiction:
https://waterquality.lcra.org/ossf/

When to Contact LCRA

Contact LCRA instead of the county when a property is:

Near Lake Travis or Highland Lakes

In LCRA watershed protection zones

In ETJ areas where LCRA is the authorized agent

They handle:

Septic permits

Inspections

Repairs requiring permits

Maintenance enforcement

A v-shaped opening usually found on one side of a weir. The v-notch provides a means of controlling flow into the weir and separating solids from the final effluent.

Anything that isn’t liquid that enters the treatment system. Solids can be trash or sludge.

The Colorado River Authority for septic (OSSF) in Texas refers to the Lower Colorado River Authority.
LCRA is an authorized agent of TCEQ that regulates septic systems in specific parts of Central Texas—mainly within its river basin and water-supply protection zones. It does not regulate all areas of those counties, only the portions under its jurisdiction (typically around lakes, watersheds, and certain unincorporated areas).

The Lower Colorado River Authority. It generally presides over portions of areas that are around lakes, watersheds etc.

LCRA’s OSSF program primarily covers parts of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

San Saba County

Lampasas County

Blanco County (partial)

Colorado County (partial)

LCRA OSSF program page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

TCEQ authorized agent list:
👉 https://www.tceq.texas.gov/permitting/ossf

When not served by city sewer and within LCRA jurisdiction:

Around Lake Travis / Highland Lakes

Marble Falls

Lago Vista

Jonestown

Briarcliff

Horseshoe Bay

Sunrise Beach Village

Granite Shoals

Bastrop area

Bastrop (ETJ areas)

Smithville (ETJ areas)

Fayette County area

La Grange

Flatonia

Schulenburg

Lower basin / coastal

Bay City area

Matagorda area

Important:
Inside city limits, cities often regulate septic, but many defer to LCRA in ETJ or watershed zones.

Where LCRA is the authorized agent, it:

Issues septic permits

Reviews system design

Performs inspections

Enforces maintenance

Regulates repairs

Protects water-supply watersheds

They act just like a county OSSF office.

When LCRA Has Authority vs County

Important for Your Operations

LCRA jurisdiction is location-specific, not county-wide.

If working in Central Texas, always check:

Inside city limits?

In LCRA watershed?

County jurisdiction?

Quick way to check if a property is LCRA-regulated

Use their contact page:
👉 https://www.lcra.org/water/wastewater/onsite-sewage-facilities/

Or call LCRA OSSF office with address.

Lower Colorado River Authority (LCRA) — Contact Information

Main Headquarters

Lower Colorado River Authority (LCRA)
3700 Lake Austin Blvd
Austin, TX 78703

Mailing Address

LCRA
P.O. Box 220
Austin, TX 78767-0220

OSSF / Septic Program Contact

LCRA On-Site Sewage Facility (OSSF) Program

Phone: 512-578-3216
Toll-free: 800-776-5272 ext. 3216
Fax: 512-578-3501
Email: ossf@lcra.org

OSSF Mailing Address

LCRA – OSSF Program
P.O. Box 220
Austin, TX 78767-0220

General LCRA Contact

Main Phone: 512-578-3200
Toll-free: 800-776-5272

General contact form:
https://www.lcra.org/contact-us/

Office Hours

Typical administrative hours:
Monday–Friday: 8:00 AM – 5:00 PM (Central)
(standard business hours for LCRA offices)

Primary Contact (OSSF Program)

There is not a single named statewide contact for septic permitting.
Use:

OSSF Program Office
Phone: 512-578-3216
Email: ossf@lcra.org

They route calls to the correct regional inspector.

Areas Served for Septic (OSSF)

LCRA regulates septic in specific watershed and lake-protection zones, not entire counties.

Typical coverage includes portions of:

Travis County

Burnet County

Llano County

Bastrop County

Fayette County

Matagorda County

Wharton County

Lampasas County

San Saba County

Colorado River basin / Highland Lakes region

They regulate installation and operation of septic systems in zones around:

Lake Travis

Highland Lakes

Certain Colorado River watershed areas

Use this map to check jurisdiction:
https://waterquality.lcra.org/ossf/

When to Contact LCRA

Contact LCRA instead of the county when a property is:

Near Lake Travis or Highland Lakes

In LCRA watershed protection zones

In ETJ areas where LCRA is the authorized agent

They handle:

Septic permits

Inspections

Repairs requiring permits

Maintenance enforcement