| 1 | 221310 | WATER SUPPLY AND IRRIGATION SYSTEMS | $347,116,516 | 1 |
| 2 | 522310 | MORTGAGE AND NONMORTGAGE LOAN BROKERS | $118,380,426 | 1 |
| 3 | 236210 | INDUSTRIAL BUILDING CONSTRUCTION | $44,792,078 | 2 |
| 4 | 221112 | FOSSIL FUEL ELECTRIC POWER GENERATION | $29,661,996 | 1 |
| 5 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $9,074,247 | 6 |
| 6 | 332312 | FABRICATED STRUCTURAL METAL MANUFACTURING | $5,810,599 | 1 |
| 7 | 541330 | ENGINEERING SERVICES | $4,443,728 | 6 |
| 8 | 928110 | NATIONAL SECURITY | $4,384,094 | 1 |
| 9 | 561720 | JANITORIAL SERVICES | $1,034,628 | 1 |
| 10 | 561621 | SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS) | $958,028 | 2 |
| 11 | 531190 | LESSORS OF OTHER REAL ESTATE PROPERTY | $937,373 | 2 |
| 12 | 333999 | ALL OTHER MISCELLANEOUS GENERAL PURPOSE MACHINERY MANUFACTURING | $789,250 | 4 |
| 13 | 541199 | ALL OTHER LEGAL SERVICES | $520,492 | 1 |
| 14 | 493110 | GENERAL WAREHOUSING AND STORAGE | $437,095 | 1 |
| 15 | 541720 | RESEARCH AND DEVELOPMENT IN THE SOCIAL SCIENCES AND HUMANITIES | $379,645 | 1 |
| 16 | 333318 | OTHER COMMERCIAL AND SERVICE INDUSTRY MACHINERY MANUFACTURING | $327,367 | 1 |
| 17 | 541519 | OTHER COMPUTER RELATED SERVICES | $287,458 | 1 |
| 18 | 322299 | ALL OTHER CONVERTED PAPER PRODUCT MANUFACTURING | $260,438 | 5 |
| 19 | 532420 | OFFICE MACHINERY AND EQUIPMENT RENTAL AND LEASING | $211,558 | 1 |
| 20 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $151,113 | 1 |
| 21 | 541350 | BUILDING INSPECTION SERVICES | $100,115 | 1 |
| 22 | 517311 | WIRED TELECOMMUNICATIONS CARRIERS | $60,835 | 1 |
| 23 | 541380 | TESTING LABORATORIES AND SERVICES | $49,952 | 1 |
| 24 | 541620 | ENVIRONMENTAL CONSULTING SERVICES | $48,492 | 1 |
| 25 | 331210 | IRON AND STEEL PIPE AND TUBE MANUFACTURING FROM PURCHASED STEEL | $47,390 | 1 |
| 26 | 324122 | ASPHALT SHINGLE AND COATING MATERIALS MANUFACTURING | $38,400 | 1 |
| 27 | 423840 | INDUSTRIAL SUPPLIES MERCHANT WHOLESALERS | $35,640 | 1 |
| 28 | 334310 | AUDIO AND VIDEO EQUIPMENT MANUFACTURING | $32,702 | 1 |
| 29 | 238220 | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS | $26,204 | 2 |
| 30 | 484210 | USED HOUSEHOLD AND OFFICE GOODS MOVING | $21,995 | 2 |
| 31 | 336214 | TRAVEL TRAILER AND CAMPER MANUFACTURING | $21,500 | 1 |
| 32 | 562119 | OTHER WASTE COLLECTION | $18,645 | 3 |
| 33 | 561730 | LANDSCAPING SERVICES | $18,546 | 2 |
| 34 | 333112 | LAWN AND GARDEN TRACTOR AND HOME LAWN AND GARDEN EQUIPMENT MANUFACTURING | $16,585 | 1 |
| 35 | 423610 | ELECTRICAL APPARATUS AND EQUIPMENT, WIRING SUPPLIES, AND RELATED EQUIPMENT MERCHANT WHOLESALERS | $15,058 | 1 |
| 36 | 811310 | COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT (EXCEPT AUTOMOTIVE AND ELECTRONIC) REPAIR AND MAINTENANCE | $11,929 | 3 |
| 37 | 238150 | GLASS AND GLAZING CONTRACTORS | $9,800 | 1 |
| 38 | 221320 | SEWAGE TREATMENT FACILITIES | $8,497 | 2 |
| 39 | 561710 | EXTERMINATING AND PEST CONTROL SERVICES | $8,400 | 2 |
| 40 | 424710 | PETROLEUM BULK STATIONS AND TERMINALS | $5,768 | 1 |
| 41 | 238190 | OTHER FOUNDATION, STRUCTURE, AND BUILDING EXTERIOR CONTRACTORS | $3,500 | 1 |
| 42 | 924110 | ADMINISTRATION OF AIR AND WATER RESOURCE AND SOLID WASTE MANAGEMENT PROGRAMS | $3,005 | 1 |
| 43 | 562219 | OTHER NONHAZARDOUS WASTE TREATMENT AND DISPOSAL | $2,750 | 1 |
| 44 | 325998 | ALL OTHER MISCELLANEOUS CHEMICAL PRODUCT AND PREPARATION MANUFACTURING | $734 | 1 |