N.J. Admin. Code § 7:10-9.2

Current through Register Vol. 56, No. 24, December 18, 2024

Section 7:10-9.2 - Discretionary changes to national surface water treatment requirements

(a) In accordance with the discretionary authority permitted by the National Regulations, for compliance with the State primary drinking water regulations including surface water treatment requirements, the following shall apply:

1. Each supplier of water from a system that uses a surface water source or a ground water source under the direct influence of surface water must provide filtration treatment using a filtration method or methods as established under the National Regulations, 40 CFR 141.73. The Department shall grant exceptions to this requirement only for ground water sources that are determined to be under the direct influence of surface water pursuant to N.J.A.C. 7:10-9.3 and that meet the filtration avoidance criteria established under the National Regulations at 40 CFR 141.71(a) and (b).

2. Prior to January 1, 2002, for each filtration plant which treats surface water or ground water under the direct influence of surface water, the filtered water turbidity level shall be less than or equal to 0.5 Nephelometric Turbidity Units (NTU) in at least 95 percent of each month's filter or plant effluent samples. This standard shall apply to all types of filtration treatments, including, but not limited to, conventional or direct filtration, slow sand filtration, and diatomaceous earth filtration. As provided in the National Regulations, 40 CFR 141.73, the Department may increase the turbidity standard for the filtered water for individual filtration plants to 1.0 NTU in 95 percent of each month's filter or plant effluent samples.

3. Effective January 1, 2002, for each filtration plant which treats surface water or ground water under the direct influence of surface water, the filtered water turbidity level shall be less than or equal to 0.3 Nephelometric Turbidity Units (NTU) in at least 95 percent of each month's filter or plant effluent samples. This standard shall apply to all types of filtration treatments, including, but not limited to, conventional or direct filtration, slow sand filtration, and diatomaceous earth filtration.

N.J. Admin. Code § 7:10-9.2

Amended by R.2000 d.354, effective 8/21/2000.
See: 31 N.J.R. 2717(b), 32 N.J.R. 3106(a).
In (a), added "Prior to January 1, 2002," at the beginning and deleted "95 percent of" following "NTU in" in the last sentence of 2, and added 3.