How often do grease traps have to be pumped in Louisville, KY?

Pump at least every 90 days. Source: the official program source, checked 2026-10-17. Rules change; confirm with the local sewer authority.

States / Kentucky / Louisville

Louisville, KY grease trap & interceptor requirements

Quoted from official source Last checked 2026-10-17. Report an error / rule changed

Quick answer

How often to pump: At least every 90 days
Interceptor minimum / sizing: not stated in the sources we checked
Permit / fees: not stated in the sources we checked

From the official source(s) below, last checked 2026-10-17. Rules change; verify with your city.

Rules change; verify with your city. Summaries are plain-English restatements of the official source linked below; “Source says” shows the exact wording. Blank rows mean the sources we checked did not state that rule, not that there is no rule.

Required trap / interceptor type	Source says: “If a grease interceptor or grease trap “Passes” the certification requirement, then no further action is required.”
Sizing rule	Source says: “For a FSE approved to install a grease trap, the minimum size requirement is the equivalent of a 25-gallon per minute/50 pound capacity trap.”
Pumping / cleaning frequency	Pump at least every 90 days. Source says “At no time, shall the cleaning frequency of the grease interceptor exceed 90 days, unless approved by MSD.”
Permit required?	Not stated in the sources we checked
Permit & program fees	Not stated in the sources we checked
Inspections	Grease traps/interceptors are subject to inspection. Source says “Personnel from MSD’s IWD will inspect the grease control equipment.”
Record keeping	Keep pumping and maintenance records (manifests/logs) available for inspection. Source says “The FSE shall maintain grease control equipment maintenance records onsite for three (3) years. v.”
Pumper / hauler approval	Use an approved / licensed grease hauler. Source says “MSD requires that a MSD certified grease waste hauler do the pumping of the FSE’s grease interceptor.”
Reporting portal	Not stated in the sources we checked
Fines & penalties	Not stated in the sources we checked
Program contact	502-540-6974

Sources

https://louisvillemsd.org/sites/default/files/inline-files/MSD_FOG_Guidelines.pdf · checked 2026-10-17
https://louisvillemsd.org/sites/default/files/inline-files/MSD%20FOG%20Guidelines%20FINAL%20as%20of%2005012019.pdf · checked 2026-10-17

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