New Hampshire Code of Administrative Rules
We - Water Well Board
Chapter We 600 - STANDARDS FOR THE CONSTRUCTION, MAINTENANCE AND ABANDONMENT OF WELLS
Part We 602 - NEW WELL CONSTRUCTION
Section We 602.16 - Setback Reductions: Special Methods of Construction for Bedrock Wells

Universal Citation: NH Admin Rules We 602.16

Current through Register No. 40, October 3, 2024

(a) For a bedrock well that does not comply with the setback requirements of We 602.06 through We 602.12, as applicable, a water well contractor shall:

(1) For a bedrock well with a minimum setback requirement of 75 feet, install casing in accordance with the Table 602-1:

Table 602-1 Minimum Casing Length Where a 75-foot Setback is Required

Horizontal Setback (ft.)

Minimum Length of Casing (ft.)

75 or greater

20

70-74

27

65-69

37

60-64

45

55-59

51

50-54

56

45-49

60

40-44

63

35-39

66

30-34

69

25-29

71

(2) For a bedrock well with a minimum setback requirement of 50 feet, install casing in accordance with the Table 602-2:

Table 602-2 Minimum Casing Length Where a 50-foot Setback is Required

Horizontal Setback (ft.)

Minimum Length of Casing (ft.)

50 or greater

20

45-49

22

40-44

30

35-39

36

30-34

40

25-29

43

(3) Grout the casing as specified in We 602.05; and

(4) Seal the casing to a minimum depth of 10 feet into competent bedrock.

(b) For purposes of determining minimum casing length for setbacks to effluent disposal areas or septic tanks, in accordance with Table 602-1, if a well is located at a higher elevation than the effluent disposal area, the difference in elevation shall be added to the minimum required casing length.

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