N.J. Admin. Code § 7:10-11.8

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:10-11.8 - Standards for the construction and development of surface water sources and ground water sources under the direct influence of surface water

(a) A supplier of water seeking a permit under this subchapter for a public community water system using a surface water source of supply shall submit for approval and implement a watershed monitoring plan and inventory that includes the following:

1. A record of raw water quality at the point of intake over a one year period. Required water quality data shall include, at a minimum, monthly sampling for physical, chemical, and primary contaminants regulated pursuant to this chapter; quarterly sampling for radiological contaminants, Giardia lamblia, and Cryptosporidium; and weekly sampling for turbidity, temperature and bacteria (total and fecal coliform). Sampling shall be conducted at least once during or immediately after a storm event;

2. An inventory of all major pollutant sources as defined pursuant to 7:10-11.4(a)4 located within the watershed and minor pollutant sources as defined pursuant to 7:10-11.4(a)5 located within one mile upstream of the water system intake, with an evaluation of their potential impact on water quality.

3. A watershed monitoring and an emergency response plan that includes a regular inspection schedule for the watershed, an inventory of all major pollutant sources within five miles upstream of the water system intake and 500 feet back from the stream banks, and a detailed emergency response plan for a contamination event.

4. A preapplication conference to discuss the requirements of this subsection is recommended.

(b) Each supplier of water with a surface water source of supply shall notify the Department, the New Jersey Department of Transportation, the county planning board, and municipal police and fire departments of the location of each intake and the road drainage areas which may affect water quality. The supplier of water shall identify areas where storm drains bring water from another area or watershed into the watershed area where the intake is located. The supplier of water shall request the Department to notify the supplier of water of applications for discharge permits received and discharge permits issued for locations upstream of the intake on a periodic basis. The supplier of water shall make similar requests of local planning and zoning boards of counties and municipalities upstream of the intake. Also, the county emergency network shall be advised of the drainage area and fire departments shall be provided a map indicating the storm drainage system that flows toward the intake.

(c) Regulations for surface water intake are as follows:

1. All surface water intakes shall be equipped with multiple surface water intake units in order to provide firm capacity (excluding the raw water intake line).

2. Intake structures shall be located and arranged to minimize the impact of surface drainage on water quality.

3. The maximum surface water intake velocity shall not exceed one-half foot per second.

4. Where practical, intake structures shall be constructed to permit the selective withdrawal of water from multiple levels of reservoirs.

5. Each intake structure shall be protected by removable or cleanable coarse screens or racks to prevent debris from entering the water system. Fine screens may be used for the purpose of excluding smaller fish and debris from the system.

6. Intake structures are prohibited within 100 feet of a septic system or sanitary sewer line.

7. All mechanical equipment shall be protected against the 100 year flood.

(d) Regulations for surface water and ground water under the direct influence of surface water treatment plants are as follows:

1. Pilot test data shall be submitted for the proposed treatment process.

2. Treatment shall, at a minimum, include coagulation, flocculation, filtration and disinfection.

3. Gravity filtration shall be provided.

4. The treatment plant shall be designed to accommodate powdered activated carbon (PAC) or granular activated carbon (GAC) treatment units.

5. The treatment plant shall have firm capacity to meet peak demand (excluding coagulation, flocculation and sedimentation).

6. Surface water shall be filtered and disinfected in accordance with N.J.A.C. 7:10-9.

7. Auxiliary power for surface water treatment plants shall be provided in accordance with 7:10-11.6(I).

(e) All filtration treatment plants, treating either surface water or ground water under the direct influence of surface water, shall be equipped as follows:

1. For the continuous monitoring and recording of the disinfectant residual entering the distribution system;

2. For the continuous monitoring and recording of effluent turbidity from each individual filter; and

3. Each filter must have the capability to filter to waste at the normal production rate.

N.J. Admin. Code § 7:10-11.8