Ala. Admin. Code r. 335-7-6-.04

Current through Register Vol. 42, No. 11, August 30, 2024

Section 335-7-6-.04 - Treatment Requirements

The treatment provided for all surface water and ground water under the influence of surface water must meet the following requirements:

(a) Conventional surface water treatment shall be required at all surface water or ground water under the influence of surface water treatment facilities, unless otherwise approved by the Department.

(b) Provisions to bypass various processes in the treatment are prohibited, unless approved by the Department.

(c) Treatment provided shall produce water meeting both primary and secondary standards with a goal for particulate removal to result in a clarified water turbidity less than 2.0 NTU when the raw water turbidity level is greater than 10.0 NTU, a clarified water turbidity level less than 1.0 NTU when the raw water turbidity level is less than or equal to 10.0 NTU and a filtered water turbidity level less than 0.10 NTU, and be free of Giardia lamblia, Cryptosporidium oocysts, viruses, heterotrophic plate count bacteria, and Legionella.

(d) No exemptions from the filtration and disinfection processes are allowed.

(e) The treatment requirements consist of installing and properly operating water treatment processes which achieve the following:

1. At least 99.9 percent removal and/or inactivation of Giardia lamblia cyst and at least 99 percent removal of Cryptosporidium oocyst prior to service of the first customer, and

2. 99.99 percent removal and/or inactivation of viruses prior to service of the first customer.

3. Drinking water meeting all primary and secondary standards.

(f) Plants with a raw water source receiving treated or untreated wastewater or having a watershed with high contaminant potential may be required to install equipment to measure, count and record particle size of particles passing through plant filters to demonstrate compliance with the requirements of 335-7-6-.04(e).

Ala. Admin. Code r. 335-7-6-.04

May 23, 1977. Repealed and Readopted: January 4, 1989; October 31, 1990. Amended: September 23, 1992; effective November 9, 1992. Amended: Filed November 28, 1995; effective January 2, 1996. (Rule was renumbered from .03 to .11, as per certification filed December 21, 1998; effective January 25, 1999, with no changes made to the rule.) Amended: Flied May 2, 2000; effective June 6, 2000. Amended: Filed April 25, 2003; effective May 30, 2003. Repealed and New Rule: Filed November 7, 2005; effective December 12, 2005. Amended: Filed August 21, 2012; effective September 25, 2012.

Author: Edgar K. Hughes

Statutory Authority:Code of Ala. 1975, §§ 22-23-33, 22-23-49, 22-22A-5, 22-22A-6.