Regulations last checked for updates: Oct 17, 2024

Title 40 - Protection of Environment last revised: Oct 15, 2024
§ 141.553 - My system practices lime softening—is there any special provision regarding my combined filter effluent?

If your system practices lime softening, you may acidify representative combined filter effluent turbidity samples prior to analysis using a protocol approved by the State.

source: 40 FR 59570, Dec. 24, 1975, unless otherwise noted.
cite as: 40 CFR 141.553