D.C. Mun. Regs. tit. 25, r. 25-C6418

Current through Register Vol. 71, No. 49, December 6, 2024

Rule 25-C6418 - WATER QUALITY - CONTAMINATION

6418.1

A swimming pool or spa shall be deemed contaminated when one (1) of the following conditions exists:

(a) More than one (1) ten milliliter (10 ml) portion of a sample shows a positive test for coliform organisms when multitube fermentation technique is used; or more than one (1) coliform per fifty milliliters (50 ml) when the membrane filter test is used; or

(b) Two (2) consecutive samples show a positive test for coliform organisms in any ten milliliter (10 ml) portion of a sample when the multitube fermentation technique is used or more than one (1) coliform per fifty milliliters (50 ml) when the membrane filter test is used; or

(c) Two (2) of any ten (10) consecutive samples show a positive test for coliform organisms in any of the ten milliliter (10 ml) portions of a sample when the multitube fermentation technique is used or more than one (1) coliform per fifty milliliters (50 ml) when the membrane filter test is used.

D.C. Mun. Regs. tit. 25, r. 25-C6418

Final Rulemaking published at 55 DCR 012845 (December 26, 2008)