OSSF Installer I 2025 Latest Update!!!
When did law requiring Installer 1 license go into effect? - ANSWER March 1, 1990
What is evaporation? - ANSWER water coming from ground
What is transpiration? - ANSWER water coming from plants
Are bore holes, injection wells or cesspools legal? - ANSWER no
Can artesian wells be contaminated from bore holes? - ANSWER yes
When did license for Installer 2 and Designated Rep go into effect? - ANSWER 1998
Requirements to take Installer 2 class - ANSWER Installer 1 license for 1 yr and 3
installs or 2 yrs as apprentice plus 6 installs
Does Designated Representative need experience? - ANSWER No, just course and test
at 70%, but cannot work as installer/designer/evaluator in jurisdiction
Requirements for Site Evaluator - ANSWER Current Installer 2, DR, Engineer,
Sanitarian, Geoscientist
Requirements for Maintenance Provider - ANSWER Maintenance Tech for 3 years or
Installer 2 plus class
What septic systems require planning by Professional Engineer? - ANSWER low
pressure dosing, absorptive mounds, soil substitution, secondary treatment, anything
aerobic
What does it mean to alter a septic system? - ANSWER To change an on-site sewage
facility
Authorization to construct - ANSWER first part of the permit
Authorized agent - ANSWER delegated the authority by the executive director to
implement and enforce the rules
Certified professional soil scientist - ANSWER individual who has met the certification
requirements of the American Society of Agronomy to engage in the practice of soil
science
Designated representative - ANSWER An individual who holds a valid license to review
permit applications, site evaluations, or planning materials, or conduct inspections on
on-site sewage facilities.
, Floodplain (100-year) - ANSWER has a 1% chance of flooding each year
Gravel-less drainfield pipe - ANSWER eight-inch or ten-inch diameter geotextile fabric-
wrapped piping product without gravel or media
Groundwater - ANSWER Subsurface water occurring in soils and geologic formations
that are fully saturated either year-round or on a seasonal or intermittent basis
Local governmental entity - ANSWER municipality, county, river authority, or special
district, including groundwater conservation districts, soil and water conservation
districts, and public health districts
Maintenance - ANSWER Maintenance does not include alterations
Maintenance provider - ANSWER Through August 31, 2009, a maintenance company is
a person or business that maintains on-site sewage facilities for compensation
Malfunctioning OSSF - ANSWER on-site sewage facility that is causing a nuisance or is
not operating in compliance
On-site sewage disposal system - ANSWER does not treat more than 5,000 gallons per
day, only used for disposal of sewage from site.
Professional engineer - ANSWER Texas Board of Professional Engineers to engage in
the practice of engineering in the State of Texas
Professional sanitarian - ANSWER individual registered by the Texas Department of
State Health Services to carry out educational and inspection duties in the field of
sanitation
Recharge feature - ANSWER Permeable geologic or manmade feature located on the
Edwards Aquifer Recharge Zone, hydrologic interconnectedness and rapid infiltration
can occur
Sewage - ANSWER is primarily organic and biodegradable or decomposable, and
originates as human, animal, or plant waste
Site evaluator - ANSWER conducts preconstruction site evaluations, performs soil
analysis, a site survey, or other activities necessary to determine the suitability of a site
for OSSF
Can a professional engineer perform sit evaluation without SE license - ANSWER Yes
What is a well - ANSWER defined under Texas Water Code, Chapters 26, 32, and 33,
and 16 TAC Chapter 76
When did law requiring Installer 1 license go into effect? - ANSWER March 1, 1990
What is evaporation? - ANSWER water coming from ground
What is transpiration? - ANSWER water coming from plants
Are bore holes, injection wells or cesspools legal? - ANSWER no
Can artesian wells be contaminated from bore holes? - ANSWER yes
When did license for Installer 2 and Designated Rep go into effect? - ANSWER 1998
Requirements to take Installer 2 class - ANSWER Installer 1 license for 1 yr and 3
installs or 2 yrs as apprentice plus 6 installs
Does Designated Representative need experience? - ANSWER No, just course and test
at 70%, but cannot work as installer/designer/evaluator in jurisdiction
Requirements for Site Evaluator - ANSWER Current Installer 2, DR, Engineer,
Sanitarian, Geoscientist
Requirements for Maintenance Provider - ANSWER Maintenance Tech for 3 years or
Installer 2 plus class
What septic systems require planning by Professional Engineer? - ANSWER low
pressure dosing, absorptive mounds, soil substitution, secondary treatment, anything
aerobic
What does it mean to alter a septic system? - ANSWER To change an on-site sewage
facility
Authorization to construct - ANSWER first part of the permit
Authorized agent - ANSWER delegated the authority by the executive director to
implement and enforce the rules
Certified professional soil scientist - ANSWER individual who has met the certification
requirements of the American Society of Agronomy to engage in the practice of soil
science
Designated representative - ANSWER An individual who holds a valid license to review
permit applications, site evaluations, or planning materials, or conduct inspections on
on-site sewage facilities.
, Floodplain (100-year) - ANSWER has a 1% chance of flooding each year
Gravel-less drainfield pipe - ANSWER eight-inch or ten-inch diameter geotextile fabric-
wrapped piping product without gravel or media
Groundwater - ANSWER Subsurface water occurring in soils and geologic formations
that are fully saturated either year-round or on a seasonal or intermittent basis
Local governmental entity - ANSWER municipality, county, river authority, or special
district, including groundwater conservation districts, soil and water conservation
districts, and public health districts
Maintenance - ANSWER Maintenance does not include alterations
Maintenance provider - ANSWER Through August 31, 2009, a maintenance company is
a person or business that maintains on-site sewage facilities for compensation
Malfunctioning OSSF - ANSWER on-site sewage facility that is causing a nuisance or is
not operating in compliance
On-site sewage disposal system - ANSWER does not treat more than 5,000 gallons per
day, only used for disposal of sewage from site.
Professional engineer - ANSWER Texas Board of Professional Engineers to engage in
the practice of engineering in the State of Texas
Professional sanitarian - ANSWER individual registered by the Texas Department of
State Health Services to carry out educational and inspection duties in the field of
sanitation
Recharge feature - ANSWER Permeable geologic or manmade feature located on the
Edwards Aquifer Recharge Zone, hydrologic interconnectedness and rapid infiltration
can occur
Sewage - ANSWER is primarily organic and biodegradable or decomposable, and
originates as human, animal, or plant waste
Site evaluator - ANSWER conducts preconstruction site evaluations, performs soil
analysis, a site survey, or other activities necessary to determine the suitability of a site
for OSSF
Can a professional engineer perform sit evaluation without SE license - ANSWER Yes
What is a well - ANSWER defined under Texas Water Code, Chapters 26, 32, and 33,
and 16 TAC Chapter 76
