Sand in One Zone's Nozzles on Well System: Check for Lateral Line Break

If only one zone (of 13) on a filtered well system constantly gets sand in nozzles, and that zone is slow to pressurize — suspect a crack in the lateral line drawing in sand when off.

Why Only One Zone?

Other zones may have different elevation, pipe routing, or no break. The slow pressurization suggests the line drains between cycles, sucking in debris through a crack.

Diagnostic Options

• Pressure test with air (won't locate break).
• Dig at low points or sleeve crossings.
• Consider pipe replacement for that zone.

Pro Insight

25-year contractor stumped — this is a tough one. Air testing helps find leaks but not always location. Persistent flushing may eventually clear if break is small.