How many GPM do I need to irrigate with well water?

For residential gardens and landscapes, you typically need 3-10 GPM for drip irrigation and 10-20 GPM for sprinkler systems. A single sprinkler zone usually requires 3-5 GPM per head, so running 4-6 heads simultaneously needs 15-25 GPM. Drip systems are more efficient, allowing you to irrigate larger areas with lower flow rates.

Can I use well water directly for irrigation without filtration?

While possible, it's not recommended. Most well water contains sediment, iron, or minerals that can clog drip emitters and sprinkler heads. At minimum, install a 100-200 mesh filter for drip systems. If your water has high iron content (above 0.3 ppm), add an iron filter or use larger-orifice emitters designed for dirty water.

Is well water better for plants than city water?

Often yes. Well water typically lacks chlorine and chloramine found in municipal water, which can harm beneficial soil microbes. However, well water may contain minerals like iron, calcium, or sodium that affect certain plants. Test your well water and match plants to your water chemistry for best results. Most vegetables and ornamentals thrive with well water irrigation.

How do I schedule irrigation around my well's recovery rate?

If your well produces 5 GPM but you need 15 GPM for sprinklers, use a storage tank or cycle irrigation zones. Run one zone for 15-20 minutes, let the well recover for 30-60 minutes, then run the next zone. Alternatively, install a 500-1000 gallon holding tank that fills slowly and supplies irrigation on demand. This protects your pump and ensures consistent water delivery.

How much can I save by irrigating with well water instead of municipal water?

Significant savings are possible. Municipal water for irrigation typically costs $4-8 per 1,000 gallons in Southern California. Well water costs approximately $0.50-1.50 per 1,000 gallons (electricity only). A household using 15,000 gallons monthly for irrigation could save $50-100 per month, or $600-1,200 annually. Larger landscapes see proportionally greater savings.

Well Water Irrigation Systems: Complete Guide to Irrigating

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