If hard-line piping is used in the field, where must it be placed?

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When field piping is used, keeping it sanitary and accessible is essential for reliable water testing. Elevating the hard-line pipe about 3 to 4 feet above the ground helps protect it from surface contamination and vandalism while making it easy for technicians to access for sampling and maintenance. Disinfecting the line with a high chlorine level (super chlorination) ensures any residual microbes are killed and the interior stays sanitary before use, which preserves the integrity of the water being monitored. Burying the line, placing it at ground level, or routing it only inside a controlled facility would compromise accessibility, increase contamination risk, or defeat the purpose of having a field-distributed, disinfected sampling line.