40 C.F.R. § 141.564

My system practices lime softening—is there any special provision regarding my individual filter turbidity monitoring?

Last amended: 2016Year: 2026Length: 53 wordsOfficial source

Cite as 40 C.F.R. § 141.564 (2026)

If your system utilizes lime softening, you may apply to the State for alternative turbidity exceedance levels for the levels specified in the table in § 141.563. You must be able to demonstrate to the State that higher turbidity levels are due to lime carryover only, and not due to degraded filter performance.
Cross-references to the CFR
141.563.
40 C.F.R. § 141.564: My system practices lime softening—is there any special provision regarding my individual filter turbidity monitoring? | Justis AI