Ala. Admin. Code r. 335-7-11-.01

Current through Register Vol. 43, No. 1, October 31, 2024

Section 335-7-11-.01 - Definitions

When used in this chapter, the following words and terms shall have the meaning assigned to them as shown:

(a) Action Level--The concentration of lead or copper in water which is used to determine compliance with these regulations. This action level value is the 90th percentile level determined from monitoring water at specific sites in the distribution system.

(b) Corrosion inhibitor--A substance capable of reducing the corrosivity of water towards metal plumbing materials, especially lead and copper, by forming a protective film on the interior surface of those materials.

(c) Compliance Limit--The level of 0.015 mg/1 of lead and 1.3 mg/1 of copper in drinking water. To determine compliance, a system shall compare its lead/copper action levels with these values.

(d) Effective Corrosion Inhibitor Residual--A concentration of corrosion inhibitor sufficient to form a passivating film on the interior walls of a pipe.

(e) First draw sample--A one liter sample of tap water which has been standing in plumbing piping for at least six hours prior to collection and is collected without flushing the tap. Samples shall be taken from residential housing from a cold water kitchen or bathroom tap or from a non-residential building collected at a tap used for water consumption.

(f) Large water system--A public water system serving 50,000 or more persons.

(g) Lead Service line--A water service line made of lead connecting the water main to a building inlet. This service line includes all fittings attached or connected to it.

(h) Medium size water system--A public water system that serves greater than 3,300 population and less than 50,000 population.

(i) Optimal corrosion control treatment--Treatment of the water that minimizes the lead and copper concentrations at users taps while ensuring that the treatment does not cause non-compliance with other established drinking water standards.

(j) Service line sample--A one liter sample of water which has been standing in a lead service line for at least six hours.

(k) Single family structure--A building constructed as a single family residence that is currently used as either a residence or a place of business.

(l) Small water system--A public water system that serves 3,300 population or less.

Author: Joe Alan Power

Ala. Admin. Code r. 335-7-11-.01

Adopted: September 23, 1992. Effective: November 9, 1992.

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