15 Ways California Can Conserve Water: From Farms to Faucets

California faces chronic water stress. With agriculture using ~80% of developed supply, conservation must span sectors. Here are 15 actionable strategies:

Agricultural Efficiency (Biggest Impact)

1. Drip/micro-irrigation conversion – Replace flood irrigation; saves 20–50% water
2. Soil moisture sensors & AI scheduling – Irrigate only when/where needed
3. Drought-tolerant crop varieties – Shift from alfalfa/rice to pistachios, olives, grapes
4. Regulated deficit irrigation – Stress crops at non-critical growth stages
5. On-farm water recycling – Capture tailwater, treat, reuse

Urban & Residential Conservation

6. Turf replacement programs – Pay residents to replace lawns with native/xeric landscaping
7. Smart irrigation controllers – Weather-based (ET) controllers for parks, gardens
8. High-efficiency fixture mandates – 1.28 gpf toilets, 1.5 gpm showerheads, HE washers
9. Leak detection & repair – Utility-scale acoustic monitoring; fix household leaks (10% of indoor use)
10. Greywater systems – Reuse laundry/shower water for irrigation (code-compliant)
11. Rainwater harvesting – Barrels, cisterns for outdoor use
12. Behavioral nudges – Home water reports, tiered pricing, shorter showers

Systemic & Infrastructure Investments

12. Expand storage – Off-stream reservoirs, groundwater recharge (Flood-MAR)
13. Water recycling/reuse – Indirect/direct potable reuse (Orange County model)
14. Conveyance modernization – Fix Delta conveyance, reduce evaporation losses
15. Data-driven management – Real-time metering, satellite ET, groundwater monitoring (SGMA)

Combined, these measures could reduce urban per capita use by 30–50% and agricultural applied water by 15–25%, building resilience against megadroughts.