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Virginia Administrative Code
Title 12. Health
Agency 5. Department of Health
Chapter 630. Private Well Regulations
6/5/2023

12VAC5-630-470. Chlorination dosage rates.

Casing Diameter (Inches)

Volume per 100 Feet (Gallons)

70% Sodium Hypochlorite
(Oz. Dry Wt.)

5% Sodium Hypochlorite (Liquid Meas.)

2

16

0.5

4 oz.

4

65

2

18 oz.

6

147

4

40 oz.

8

261

6

4.25 pts.

10

408

8

7 pts.

12

588

12

10 pts.

16

1045

20

2 gal.

20

1632

32

3.3 gal.

24

2350

48

4.67 gal.

30

3672

70

7.3 gal.

36

5288

101

10.5 gal.

Statutory Authority

§§ 32.1-12 and 32.1-176 of the Code of Virginia.

Historical Notes

Derived from VR355-34-100, Appendix II; eff. April 1, 1992.

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