CPO Spa and Hot Tub Operations 2

Question 1

What is the recommended pH range for commercial spa or hot tub water?

Accepted Answer

7.2–7.8

Answer

6.8–7.2

Answer

7.8–8.2

Answer

6.5–7.0

Question 2

What is the maximum water temperature allowed for a commercial spa in the United States?

Accepted Answer

104°F (40°C)

Answer

98°F (37°C)

Answer

100°F (38°C)

Answer

108°F (42°C)

Question 3

What is the minimum recommended free chlorine level for a spa or hot tub?

Accepted Answer

3 ppm

Answer

1 ppm

Answer

2 ppm

Answer

6 ppm

Question 4

What is the recommended total alkalinity range for spa water?

Accepted Answer

80–120 ppm

Answer

40–60 ppm

Answer

130–160 ppm

Answer

160–200 ppm

Question 5

How frequently should a heavily used commercial spa be tested for sanitizer and pH during operating hours?

Accepted Answer

Every 2 hours

Answer

Once per day

Answer

Every 4 hours

Answer

Once per week

Question 6

What is the most common cause of foaming in spa and hot tub water?

Accepted Answer

Body oils, lotions, and personal care products from bathers

Answer

High calcium hardness

Answer

Low pH levels

Answer

Excessive chlorine concentration

Question 7

What is the recommended calcium hardness range for spa water?

Accepted Answer

150–250 ppm

Answer

50–100 ppm

Answer

100–150 ppm

Answer

300–500 ppm