- Settlement Canyon Irrigation
- Settlement Canyon Irrigation
- Settler's Irrigation District
- Severinsen Irrigation
- Shasta View Irrigation Dist
- Sheshone Irrigation
- Shoshone Irrigation District
- Sidon Irrigation Dist
- Snake River Valley Irrigation
- Snake River Valley Irrigation
- Southern Irrigation & Mntnc
- Southern Rain
- Southwest Kansas Irrigation
- Sprinkler Guys
- Sprinkler Shop
- Squaw Creek Irrigation
- Stanfield Irrigation
- Stephen C Berkenbile & Assoc
- Strawberry Highline Canal
- Sun Dew Irrigation Systems
- Sunshine Irrigation LLC
- Swalley Irrigation District
- Trinchera Irrigation Co
- Truckee-Carson Irrigation
- Truckee-Carson Irrigation
- Truckee-Carson Irrigation
- Truckee-Carson Irrigation
- Twin Falls Canal Co
- Twin Falls Canal Co
- Twin Falls Canal Co
- Twin Lakes Reservoir & Canal
- Two Leggin Water Users Assn
- Upper Platte & Beaver Canal Co
- Vale Oregon Irrigation Dist
- Vogel Irrigation Co
- Wally's Water Works
- Water District 65-Watermaster
- Water Supply & Storage
- Water Supply & Storage Co
- Water Supply & Storage Co
- Webster Irrigation District
- West Suburban Irrigation Inc
- Western Irrigation Supply Hse
- Westland Irrigation District
- Wet-Tech Irrigation
- Wheatland Irrigation District
- Wilder Irrigation District
- Willwood Irrigation Dist
- Woodbridge Irrigation Dist
