Module 6 — Shock Chlorination of Water Wells
Worksheet
Calculating Water and Chlorine Requirements (200 PPM)
for Shock Chlorination
Complete the following table using your own figures to determine how much water and chlorine you need to shock chlorinate your well.
Casing Diameter
Volume of
Water Needed
5 1/4%
1
Domestic
Chlorine Bleach
12%
Industrial Sodium
Hypochlorite
2
70%
High Test Calcium
Hypochlorite
(
in)
(
mm)
Imperial gal. needed per
1
ft. of water in the casing
L per 1 ft. (30 cm) of water L per 1 ft. (30 cm) of water
Dry weight
2
per 1 ft.
(30
cm) of water
4
(100)
_____
ft. x 1.1 gal. = _____
_____
ft. x 0.019 L = _____
_____
ft. x 0.008 L = _____ _____ft. x 1.44 g = ______
6
(150)
_____
ft. x 2.4 gal. = _____
_____
ft. x 0.042 L = _____
_____
ft. x 0.018 L = _____ _____ft. x 3.12 g = ______
8
(200)
_____
ft. x 4.2 gal. = _____
_____
ft. x 0.072 L = _____
_____
ft. x 0.032 L = _____ _____ft. x 5.46 g = ______
24
(600)
3
extra 200 gal.
_____
ft. x 0.340 L = _____
_____
ft. x 0.148 L = _____ _____ft. x 25.40 g = _____
36
(900)
3
extra 200 gal.
_____
ft. x 0.760 L = _____
_____
ft. x 0.34 L = ______ _____ft. x 57.20 g = _____
3
See modified procedure for large diameter wells on page 53.
1
Domestic chlorine bleach should not have
additives or perfumes.
2
Since a dry chemical is being used, it should
be mixed with water to form a chlorine
solution prior to placing it in the well.
*
Store the completed worksheet in the back pocket.