La. Admin. Code tit. 51 § XII-245

Current through Register Vol. 50, No. 11, November 20, 2024

Section XII-245 - Installation of Water Mains

A. Specifications for installation of water mains shall incorporate the applicable provisions of the AWWA standards and/or manufacturer's recommended installation procedures including those specifications and requirements for bedding, cover and blocking.

B. Installed pipe shall be pressure tested and leakage tested in accordance with the appropriate AWWA Standards.

C. New, cleaned and repaired water mains shall be disinfected in accordance with AWWA Standard C651 (Disinfecting Water Mains) and are subject to the following additional provisions.

1. Water from new water mains shall not be furnished for consumer's use until tests performed by a laboratory certified by the state health officer have shown the new water mains to be free from contamination by coliform bacteria (following EPA approved procedures prescribed in Standard Methods for the Examination of Water and Wastewater, Nineteenth Edition).

2. After cutting into or repairing existing mains, the water shall be tested by a laboratory certified by the state health officer for coliform bacteria (following EPA approved procedures prescribed in Standard Methods for the Examination of Water and Wastewater, Nineteenth Edition) to determine the effectiveness of the disinfection procedure unless an alternate method is approve by the state health officer. If the direction of flow is unknown, then samples shall be taken on each side of the main break. If samples are E. coli/fecal coliform positive then the state health officer shall be notified. If samples are total coliform positive, then corrective action must be taken, and daily sampling shall continue until two consecutive samples are negative.

3. Samples shall not be collected from the new facilities until such new facilities have been disinfected as prescribed herein, and the chlorinated water thoroughly flushed from the system until such chlorine measurements are no higher than those generally prevailing in the distribution system.

La. Admin. Code tit. 51, § XII-245

Promulgated by the Department of Health, Office of Public Health, LR 44340 (2/1/2018), effective 8/1/2018.

AUTHORITY NOTE: Promulgated in accordance with the provisions of R.S. 40:4.A.(8), 40:4.13.D.(1)(2) and 40:5.A.(2)(3)(5)(6)(7)(17).