§141.552. My system consists of “alternative filtration” and is required to conduct a demonstration—what is required of my system and how does the State establish my turbidity limits?
40 C.F.R. § 141.552
If your system consists of alternative filtration(filtration other than slow sand filtration, diatomaceous earth filtration, conventional filtration, or direct filtration) you are required to conduct a demonstration (see tables in § 141.551). Your system must demonstrate to the State, using pilot plant studies or other means, that your system's filtration, in combination with disinfection treatment, consistently achieves:
99 percent removal of Cryptosporidium oocysts;
99.9 percent removal and/or inactivation of Giardia lamblia cysts; and
99.99 percent removal and/or inactivation of viruses.
[Reserved]
Notes, amendments, and revision history
Source
Source: 67 FR 1839, Jan. 14, 2002, unless otherwise noted.
Authority
Authority: 42 U.S.C. 300f, 300g-1, 300g-2, 300g-3, 300g-4, 300g-5, 300g-6, 300j-4, 300j-9, and 300j-11.
Source
Source: 40 FR 59570, Dec. 24, 1975, unless otherwise noted.