What is the required setback distance for a Gravel Packed Public Well under applying setback rules?

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Multiple Choice

What is the required setback distance for a Gravel Packed Public Well under applying setback rules?

Explanation:
Setback distance protects drinking-water wells by keeping pesticide applications away from them. For a gravel-packed public well, regulators treat this type of well as more vulnerable to surface contaminants, so a larger buffer is required to cut down the chance that pesticides reach the aquifer. The 400-foot distance gives sufficient travel time and attenuation through soil and groundwater to reduce contamination risk, especially during rain or irrigation events when infiltration can move residues toward the well. Smaller setbacks wouldn’t provide the same level of protection for a public water supply well of this construction.

Setback distance protects drinking-water wells by keeping pesticide applications away from them. For a gravel-packed public well, regulators treat this type of well as more vulnerable to surface contaminants, so a larger buffer is required to cut down the chance that pesticides reach the aquifer. The 400-foot distance gives sufficient travel time and attenuation through soil and groundwater to reduce contamination risk, especially during rain or irrigation events when infiltration can move residues toward the well. Smaller setbacks wouldn’t provide the same level of protection for a public water supply well of this construction.

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