2404.1 To be considered non-buoyant, a nonwoven disposable product shall be tested using the Settling Test of the INDA/EDANA Guideline Document 4 2018, FG 504.R1(18), and shall meet the following criteria, as set forth in IWSFG's PAS1: 2020 Criteria for Recognition as a Flushable Product (IWSFG PAS1 2020):

(a) In at least ninety percent (90%) of the tests, the specimens should settle at an average velocity of at least one millimeter (1 mm) per second over the eleven hundred fifty-millimeter (1150 mm) measuring distance;

(b) In tests that are regarded as successful (see (a) above), the specimen or disintegrated parts of the specimens tested should not become sufficiently buoyant to rise more than three hundred millimeters (300 mm) from the bottom of the column within twenty-four (24) hours. If this occurs, that particular test should be regarded as 'failed' test;

(c) At least ninety percent (90%) of all specimens should pass both criteria (a) and (b) above.

2404.2 To be considered not to contain plastic, a nonwoven disposable product must be considered acceptable under Section 7.1 of IWSFG's PAS 1 2020.

2404.3 Copies of the IWSFG PAS 1 2020 and INDA/EDANA Guideline Document 4 2018, FG 504.R1(18) are available on DOEE's website at https://doee.dc.gov.

SOURCE: Final Rulemaking published at 72 DCR 012739 (November 14, 2025).