If hard line piping is used, the pipes must be super chlorinated and fixed where?

• A. 0 to 1 foot above the ground
• B. 3 to 4 feet above the ground
• C. On the roof
• D. Behind the meter

Answer: (B)

Disinfecting hard line piping requires keeping the exposed piping accessible for maintaining, sampling, and verifying chlorine residuals. Placing the pipes about 3 to 4 feet above the ground provides a practical balance: they’re high enough to stay out of splashes, floods, soil contamination, and everyday wear, yet still low enough to be easily accessed by maintenance staff for super chlorination and inspection. This height also helps deter tampering and keeps test taps and sampling points reachable without crawling or climbing.

Choosing a height lower to ground level increases risk of damage, contamination, and accidental contact; placing piping on the roof introduces weather exposure and difficult access for routine chlorination; routing behind the meter can hinder routine maintenance and sampling.