N.H. Code Admin. R. Env-Dw 709.05

Current through Register No. 25, June 20, 2024

Section Env-Dw 709.05 - Frequency of Standard Monitoring for Total Coliforms for CWS

(a) Subject to (b), below, and Env-Dw 709.06, the minimum number of total coliform samples taken per month by a CWS shall be based on the population served by the CWS, as specified in Table 709-1, below:

Table 709-1: Frequency of Standard Sampling for Community Water Systems

Population Served Lower Limit Upper Limit	Minimum number of samples per month
25 to 1,000	1
1,001 to 2,500	2
2,501 to 3,300	3
3,301 to 4,100	4
4,101 to 4,900	5
4,901 to 5,800	6
5,801 to 6,700	7
6,701 to 7,600	8
7,601 to 8,500	9
8,501 to 12,900	10
12,901 to 17,200	15
17,201 to 21,500	20
21,501 to 25,000	25
25,001 to 33,000	30
33,001 to 41,000	40
41,001 to 50,000	50
50,001 to 59,000	60
59,001 to 70,000	70
70,001 to 83,000	80
83,001 to 96,000	90
96,001 to 130,000	100
130,001 to 220,000	120
220,001 to 320,000	150
320,001 to 450,000	180
450,001 to 600,000	210
600,001 to 780,000	240
780,001 to 970,000	270
970,001 to 1,230,000	300
1,230,001 to 1,520,000	330
1,520,001 to 1,850,000	360

(b) The owner of a CWS for which the population varies seasonally, such as a community having a large influx of summer residents or a college community, shall average the daily population over each sampling period to determine the number of samples required in each sampling period.

N.H. Code Admin. R. Env-Dw 709.05

(See Revision Note #1 at chapter heading for Env-Dw 700) #9700, eff 5-1-10

Amended by Volume XXXV Number 06, Filed February 12, 2015 , Proposed by #10771, Effective 2/1/2015, Expires2/1/2025.