Figure: 30 TAC §285.91(12)

Table XII. OSSF Maintenance Contracts, Affidavit, and Testing/Reporting Requirements.

SYSTEM DESCRIPTION Maintenance
/Affidavit
Required
Maintenance
Activities
Required
Testing and
Reporting
Requirements 2,4
Septic Tank & Absorptive Drainfield No See §285.39 No
Septic Tank & ET Drainfield (Unlined)
Septic Tank & ET Drainfield (Lined)
No (3)
No (3)
See §285.39
See §285.39
No
No
Septic Tank & Pumped Drainfield No See §285.39 No
Septic Tank & Leaching Chamber No See §285.39 No
Septic Tank & Gravelless Pipe No See §285.39 No
Septic Tank & Low Pressure Dosing No See §285.39 No
Septic Tank & Absorptive Mounds No See §285.39 No
Septic Tank & Soil Substitution No See §285.39 No
Septic Tank, Secondary Treatment, Filter & Surface
Application
Yes Entire OSSF Test & Report
Secondary Treatment & Standard Absorptive
Drainfields
Yes Treatment System Report
Secondary Treatment & ET Drainfield Yes Treatment System Report
Secondary Treatment & Leaching Chamber Yes Treatment System Report
Secondary Treatment & Gravelless Pipe Yes Treatment System Report
Secondary Treatment, Filter & Drip Emitter Yes Entire OSSF Report
Secondary Treatment & Low Pressure Dosing Yes Treatment System Report
Secondary Treatment & Absorptive Mounds Yes Treatment System Report
Secondary Treatment & Surface Application Yes Entire OSSF Test and Report
Any Other Treatment System (1) (1) (1)
Any Other Subsurface Disposal System (1) (1) (1)
Any Other Surface Disposal System Yes (1) (1)
Non-Standard Treatment and Surface Application Yes Entire OSSF Test and Report
(1)
Holding Tank Yes Pump tank as
needed
Keep pump records

(1) Determined by the permitting authority based upon review required by §285.5(b) of this title (relating
to Submittal Requirements for Planning Materials).
(2) Requirements for Planning Materials. Testing criteria and reporting frequency for those systems not
covered under (1) shall be according to §285.91(4) of this title.
(3) Required if design Q is less than required by §285.91(3) of this title.
(4) Not required if the homeowner maintains the system.