New Jersey Administrative Code
Title 7 - ENVIRONMENTAL PROTECTION
Chapter 10 - SAFE DRINKING WATER ACT
Subchapter 9 - SURFACE WATER TREATMENT REQUIREMENTS
Section 7:10-9.4 - Monitoring requirements and criteria for determination for ground water sources under the direct influence of surface water
Current through Register Vol. 56, No. 18, September 16, 2024
(a) Each supplier of water that has a ground water source that meets any of the criteria in 7:10-9.3(a) shall monitor that source for a period of one year from the date of receipt of notice of such determination made pursuant to 7:10-9.3 using the procedures set forth in (b) below.
(b) During the one-year monitoring period established pursuant to (a) above, the supplier of water shall monitor the ground water source according to the sampling scheme below:
(c) If the sampling results for the physical/chemical parameters listed in (c)1 through 5 below show significant variation during the course of the one-year monitoring period established pursuant to (a) above, the supplier of water shall switch to particulate matter monitoring as described in (b)2 above for the remainder of the one-year monitoring period. If the supplier of water does not switch to particulate matter monitoring, then the raw water source will be considered by the Department to be "under the direct influence of surface water" and subject to the filtration and disinfection requirements of this subchapter. The Department considers the following variations to be "significant" for purposes of this subsection:
(d) Except as provided at (c) above, only the presence of rotifers, diatoms, coccidia, insect parts and larvae, fecal coliform or E. coli bacteria, Cryptosporidium, and/or Giardia cysts in the raw water source will be considered by the Department as indicative of direct surface water influence.
(e) Each well in a wellfield shall be individually monitored pursuant to this section, even if all the wells discharge into a common header, unless physical circumstances prevent such individual monitoring.
(f) A sampling report, including the raw water monitoring results in tabular form and a written description of the monitoring results, shall be submitted to the Department by mail at the address at N.J.A.C. 7:10-2.6(b) within 30 calendar days after the completion of monitoring conducted pursuant to this section.