| Becker (Jim) Electric Plumbing | 515-981-4595 | 1312 Main St | Norwalk | IA | 50211 |
| Bergen Distributing | 515-253-9528 | 10052 Justin Dr | Urbandale | IA | 50322 |
| Berwick Water Assoc | 515-266-8668 | 5825 NE Berwick Dr | Des Moines | IA | 52036 |
| Bob Lenc Landscaping Inc & Lawn Care | 515-278-2028 | 5425 Lower Beaver Rd | Des Moines | IA | 50310 |
| Burkett Chris | 515-223-5609 | 205 4th St | West Des Moines | IA | 50265 |
| Central Iowa Water Association | 515-792-7011 | RR 2 | Newton | IA | 50208 |
| Central Landscape Dayl Inglett | 515-232-4414 | 400 SE 16th St | Ames | IA | 50010 |
| Creston City Water Works | 515-347-5343 | Rt | Afton | IA | 50830 |
| Cryder John R(Bob) | 515-432-6871 | 1324 Tama St | Boone | IA | 50036 |
| Cryder Well Co | 515-432-8374 | 1324 Tama St | Boone | IA | 50036 |
| Crystal Clear Water Co | 515-265-2324 | 3717 Delaware Ave | Des Moines | IA | 50313 |
| Culligan Water Conditioning Inc Sales | 515-274-4781 | 111 7th St | West Des Moines | IA | 50265 |
| D & D Communications | 515-423-0689 | 840 Briarstone Dr | Mason City | IA | 50401 |
| Dakota City Water Supply Plant | 515-332-2822 | 210 S 3 | Dakota City | IA | 50529 |
| Fiberglass Utility Supplies Inc | 515-693-3311 | 1465 250th St | Libertyville | IA | 52567 |
| Hancock Hancock County Environmental Specialis | 515-923-3051 | 875 State St | Garner | IA | 50438 |
| Hinckley & Schmitt Bottled Water The Pure Wate | 515-265-8548 | 1765 NE 58th Ave | Des Moines | IA | 50313 |
| Holiday Lake Water System Ltd | 515-522-9602 | 3229 Holiday Ln | Brooklyn | IA | 52211 |
| Humboldt Distilled Water Co | 515-332-1602 | 610 13th St N | Humboldt | IA | 50548 |
| Iowa Irrigation Corp | 515-769-2367 | 1000 Van Fleet St | Kelley | IA | 50134 |
| Iowa Soft Water Co | 515-224-2129 | 200 35th Ct | West Des Moines | IA | 50265 |
| Jefferson County Rural Water | 515-472-7370 | 2632 Oasis Blvd | Fairfield | IA | 52556 |
| Lakewood Benefited Water & Sanitary District | 515-287-7131 | 142 Highway 28 | Norwalk | IA | 50211 |
| Lawn Environment Systems | 515-277-2511 | 110 Iowa St | Des Moines | IA | 50241 |
| Lawn Of Leisure | 515-289-2020 | 6990 NE 14th St | Ankeny | IA | 50021 |
| Luscombe Enterprises | 515-358-6300 | 7442 Balsam Ave | Meservey | IA | 50457 |
| Mahaska Rural Water System | 515-673-8851 | 101 N J St | Oskaloosa | IA | 52577 |
| Marion County Rural Water Assoc | 515-842-3304 | 209 W Pleasant St | Knoxville | IA | 50138 |
| Marshalltown Water Dept | 515-753-7913 | 205 E State St | Marshalltown | IA | 50158 |
| Midwest Landscaping & Irrigation Inc Design Ce | 515-987-5757 | 8929 Ashworth Rd | West Des Moines | IA | 50266 |
| Mountain Valley Water | 515-265-6769 | 3717 Delaware Ave | Des Moines | IA | 50313 |
| Outdoor Environments | 515-254-9176 | 8800 Long Meadow Dr | Johnston | IA | 50131 |
| Outdoor Services Of Iowa | 515-383-4434 | 101 Water | Cambridge | IA | 50046 |
| Pbs Landscaping Inc | 515-278-1118 | 5555 NW Beaver Dr | Johnston | IA | 50131 |
| Poweshiek Water Assoc | 515-522-7416 | 128 S Jackson St | Brooklyn | IA | 52211 |
| Poweshiek Water Association Water Treatment Fa | 515-484-3234 | 3504 Highway 63 | Tama | IA | 52339 |
| Public Water Supply District | 515-947-3616 | 101 S 16th | Unionville | IA | 52594 |
| Rathbun Regional Water Assoc Inc | 515-647-2416 | RR 3 | Centerville | IA | 52544 |
| Standard Distributing Inc | 515-266-2337 | 2220 E 17th St | Des Moines | IA | 50316 |
| Sullivan Plumbing | 515-743-6471 | Rt Box 243 | Greenfield | IA | 50849 |
| T & T Sprinkler Service Inc | 515-276-5935 | 8525 Douglas Ave | Urbandale | IA | 50322 |
| U S Coffee | 515-243-4409 | 2319 Bell Ave | Des Moines | IA | 50321 |
| Wapello Rural Water Assoc | 515-682-8351 | 534 Shaul Ave | Ottumwa | IA | 52501 |
| Warren Water Inc | 515-981-4562 | 708 North Ave | Norwalk | IA | 50211 |
| Water Company | 515-784-6472 | 111 S Chestnut St | Lamoni | IA | 50140 |
| Xenia Rural Water Dist | 515-438-2944 | 119 N Main St # 459 | Woodward | IA | 50276 |
