Top 100 International Boundary and Water Commission U.S.-Mexico Contractors, FY2023

Name: Top 100 International Boundary and Water Commission U.S.-Mexico Contractors, FY2023
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Agency page on GovTribe

The top 10 won 91% of FY2023 International Boundary and Water Commission U.S.-Mexico contract dollars

Contract obligations: $140,537,812 Net of deobligations, by the International Boundary and Water Commission U.S.-Mexico and its offices
Contractors: 132 Parent companies with an obligation
Largest contractor: Odin Environmental Solutions, LLC $90.4 million, 64.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Odin Environmental Solutions, LLC Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$90,352,320	64.0%	Rank history: not on the FY2021 list, #1 in FY2022, #65 in FY2024 and #35 in FY2025; unchanged since FY2022.
2	Veolia Water North America-West LLC Through Veolia Water West Operating Services Inc. Top NAICS codes 221320 Sewage Treatment Facilities	$22,980,246	16.3%	Rank history: #1 in FY2021, #3 in FY2022, #5 in FY2024 and not on the FY2025 list; up 1 since FY2022.
3	CDM Smith Inc Through CDM Federal Programs Corporation Top NAICS codes 541330 Engineering Services	$4,123,730	2.9%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
4	SAN Diego Gas & Electric Company Top NAICS codes 221122 Electric Power Distribution	$2,512,341	1.8%	Rank history: #3 in FY2021, #6 in FY2022, #4 in FY2024 and #5 in FY2025; up 2 since FY2022.
5	Caterpillar Inc. Top NAICS codes 333120 Construction Machinery Manufacturing	$2,469,312	1.7%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2024 and #19 in FY2025; new.
6	At&T Inc. 3 awardees, including At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite)	$2,062,725	1.5%	Rank history: #6 in FY2021, #19 in FY2022, #7 in FY2024 and #11 in FY2025; up 13 since FY2022.
7	Tatonka Trucking Llc. Top NAICS codes 221310 Water Supply and Irrigation Systems	$1,374,240	1.0%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2024 and #15 in FY2025; new.
8	Applied Security Technologies Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors 561621 Security Systems Services (except Locksmiths)	$1,213,050	0.9%	Rank history: #60 in FY2021, #40 in FY2022, #40 in FY2024 and not on the FY2025 list; up 32 since FY2022.
9	UNS Electric Inc. Top NAICS codes 221122 Electric Power Distribution	$1,204,560	0.9%	Rank history: #10 in FY2021, #14 in FY2022, #23 in FY2024 and not on the FY2025 list; up 5 since FY2022.
10	American Material Handling, Inc. Top NAICS codes 333120 Construction Machinery Manufacturing 333924 Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing	$799,339	0.6%	Rank history: #21 in FY2021, #10 in FY2022, #6 in FY2024 and #8 in FY2025; unchanged since FY2022.
11	Seaboard Controls, LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$718,221	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
12	Government of the United States Through GSA Financial and Payroll Service Top NAICS codes 532112 Passenger Car Leasing	$709,165	0.5%	Rank history: #17 in FY2021, #21 in FY2022, #20 in FY2024 and #17 in FY2025; up 9 since FY2022.
13	VF Solutions LLC Top NAICS codes 238160 Roofing Contractors	$691,292	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
14	Serco Inc Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$668,834	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
15	Momar, Incorporated Top NAICS codes 325199 All Other Basic Organic Chemical Manufacturing	$578,653	0.4%	Rank history: not on the FY2021 list, #27 in FY2022, #21 in FY2024 and #27 in FY2025; up 12 since FY2022.
16	WEX Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$433,814	0.3%	Rank history: #37 in FY2021, #30 in FY2022, #24 in FY2024 and #25 in FY2025; up 14 since FY2022.
17	SAK Construction LLC Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$422,361	0.3%	Rank history: #2 in FY2021, #2 in FY2022 and not on the FY2024–FY2025 lists; down 15 since FY2022.
18	Verizon Communications Inc. Through MCI Communications Services LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$385,113	0.3%	Rank history: #24 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
19	Xtrls International Inc. Top NAICS codes 541512 Computer Systems Design Services	$367,924	0.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
20	Texas Electrical & Testing Services LLC Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers 333914 Measuring, Dispensing, and Other Pumping Equipment Manufacturing	$360,384	0.3%	Rank history: #16 in FY2021, #23 in FY2022, #16 in FY2024 and #7 in FY2025; up 3 since FY2022.
21	CDW Corporation Through CDW Government LLC Top NAICS codes 511210 Software Publishers	$305,879	0.2%	Rank history: #32 in FY2021, #24 in FY2022 and not on the FY2024–FY2025 lists; up 3 since FY2022.
22	Gaithersburg Farmers Supply, Inc. Top NAICS codes 336112 Light Truck and Utility Vehicle Manufacturing	$292,816	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
23	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$253,959	0.2%	Rank history: #28 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; up 12 since FY2022.
24	Access Communications Group, LLC Top NAICS codes 541513 Computer Facilities Management Services 334111 Electronic Computer Manufacturing	$229,714	0.2%	Rank history: not on the FY2021 list, #15 in FY2022, not on the FY2024 list and #47 in FY2025; down 9 since FY2022.
25	Pinnacle West Capital Corporation Through Liberty Utilities (Litchfield Park Water & Sewer) Corp. Top NAICS codes 221122 Electric Power Distribution	$208,665	0.1%	Rank history: #47 in FY2021, #50 in FY2022, #47 in FY2024 and #99 in FY2025; up 25 since FY2022.
26	Legend Technical Services of Arizona, Inc. Top NAICS codes 541380 Testing Laboratories and Services	$206,825	0.1%	Rank history: #30 in FY2021, #39 in FY2022, #37 in FY2024 and #28 in FY2025; up 13 since FY2022.
27	Silva Silva International, LLC Top NAICS codes 541330 Engineering Services	$204,740	0.1%	Rank history: not on the FY2021 list, #45 in FY2022, not on the FY2024 list and #58 in FY2025; up 18 since FY2022.
28	TK Elevator Corporation Top NAICS codes 238290 Other Building Equipment Contractors	$179,985	0.1%	Rank history: not on the FY2021 list, #62 in FY2022 and not on the FY2024–FY2025 lists; up 34 since FY2022.
29	Sterling Computers Corporation Top NAICS codes 334111 Electronic Computer Manufacturing	$175,989	0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2024 and not on the FY2025 list; new.
30	Robbwaterpartners LLC Top NAICS codes 924120 Administration of Conservation Programs	$150,000	0.1%	Rank history: not on the FY2021 list, #79 in FY2022, #42 in FY2024 and not on the FY2025 list; up 49 since FY2022.
31	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$141,558	0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2024 and not on the FY2025 list; new.
32	Idex Corporation Through Ads LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$135,804	0.1%	Rank history: #40 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
33	Macgyver Solutions, Inc. Top NAICS codes 336112 Light Truck and Utility Vehicle Manufacturing	$134,860	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
34	Phoenix Pumps Inc. Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$131,289	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
35	Danaher Corporation 2 awardees, including Hach Company and OTT Hydromet Corp Top NAICS codes 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$131,069	0.1%	Rank history: #73 in FY2021, #84 in FY2022 and not on the FY2024–FY2025 lists; up 49 since FY2022.
36	Bartholow Rental Co Inc. Top NAICS codes 423830 Industrial Machinery and Equipment Merchant Wholesalers	$129,883	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
37	8X8, Inc. Top NAICS codes 517121 Telecommunications Resellers	$129,385	0.1%	Rank history: #36 in FY2021, #46 in FY2022, #46 in FY2024 and #42 in FY2025; up 9 since FY2022.
38	GC Works Inc. Top NAICS codes 238160 Roofing Contractors	$118,985	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Environmental Systems Research Institute, Inc. Top NAICS codes 511210 Software Publishers	$118,875	0.1%	Rank history: #41 in FY2021, not on the FY2022 list, #32 in FY2024 and #43 in FY2025; returned.
40	Tvar Solutions, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$107,631	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
41	Federal Contracts LLC Top NAICS codes 336112 Light Truck and Utility Vehicle Manufacturing	$97,548	0.1%	Rank history: #25 in FY2021, #20 in FY2022, #29 in FY2024 and #48 in FY2025; down 21 since FY2022.
42	DHL Analytical Inc. Top NAICS codes 541380 Testing Laboratories and Services	$95,361	0.1%	Rank history: #57 in FY2021, #49 in FY2022, not on the FY2024 list and #38 in FY2025; up 7 since FY2022.
43	Pureline Treatment Systems LLC Top NAICS codes 221310 Water Supply and Irrigation Systems	$94,232	0.1%	Rank history: not on the FY2021 list, #88 in FY2022, #83 in FY2024 and not on the FY2025 list; up 45 since FY2022.
44	Vinsys Information Technology Inc Top NAICS codes 541511 Custom Computer Programming Services	$88,331	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
45	Aquatic Informatics ULC	$82,000	0.1%	Rank history: #50 in FY2021, #51 in FY2022, #53 in FY2024 and #54 in FY2025; up 6 since FY2022.
46	Swanson Services LLC Top NAICS codes 561612 Security Guards and Patrol Services	$78,898	0.1%	Rank history: #29 in FY2021, #28 in FY2022, #41 in FY2024 and #94 in FY2025; down 18 since FY2022.
47	Rational 360 Inc. Top NAICS codes 541613 Marketing Consulting Services	$77,879	0.1%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and not on the FY2025 list; new.
48	Deere & Company Top NAICS codes 333111 Farm Machinery and Equipment Manufacturing	$76,944	0.1%	Rank history: not on the FY2021 list, #16 in FY2022, not on the FY2024 list and #24 in FY2025; down 32 since FY2022.
49	Communications Professionals Inc. Top NAICS codes 541511 Custom Computer Programming Services	$74,573	0.1%	Rank history: not on the FY2021 list, #42 in FY2022, #38 in FY2024 and #52 in FY2025; down 7 since FY2022.
50	APL Access & Security, Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$72,963	0.1%	Rank history: #68 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; up 13 since FY2022.
51	Mvation Worldwide, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$69,791	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
52	Earle Kinlaw & Associates, Inc. Top NAICS codes 333924 Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing	$68,775	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
53	Hill Brothers Chemical Company Top NAICS codes 424690 Other Chemical and Allied Products Merchant Wholesalers	$68,494	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
54	Intergraph Corporation Through Hexagon US Federal, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$64,259	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
55	Dabb & Co Inc. Top NAICS codes 333111 Farm Machinery and Equipment Manufacturing	$60,994	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
56	L & S Electric Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$60,145	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
57	American Electric Power Company, Inc. Through American Electric Power Service Corporation Top NAICS codes 541330 Engineering Services	$60,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
58	Allterra Central Inc. Top NAICS codes 334519 Other Measuring and Controlling Device Manufacturing	$59,125	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
59	Law Enforcement Specialists, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$55,080	<0.1%	Rank history: not on the FY2021 list, #64 in FY2022, #60 in FY2024 and #67 in FY2025; up 5 since FY2022.
60	Kyocera Corporation Through Kyocera Document Solutions America Inc. Top NAICS codes 333316 Photographic and Photocopying Equipment Manufacturing	$54,378	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
61	Hennesy Mechanical Sales LLC Top NAICS codes 221320 Sewage Treatment Facilities	$54,358	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
62	NVS Corporate Services, Inc. Top NAICS codes 561210 Facilities Support Services 561730 Landscaping Services	$52,939	<0.1%	Rank history: #55 in FY2021, #56 in FY2022, #66 in FY2024 and #62 in FY2025; down 6 since FY2022.
63	FTS Forest Technology Systems Ltd. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$49,015	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
64	Rotork P.L.C. Through Rotork Controls Inc. Top NAICS codes 221320 Sewage Treatment Facilities	$45,679	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
65	HSI Workplace Compliance Solutions, Inc. Top NAICS codes 813920 Professional Organizations	$45,000	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
66	Globex Corp Top NAICS codes 333923 Overhead Traveling Crane, Hoist, and Monorail System Manufacturing	$44,740	<0.1%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2024 and #23 in FY2025; new.
67	El Paso Electric Company Top NAICS codes 221122 Electric Power Distribution	$43,476	<0.1%	Rank history: #64 in FY2021, #68 in FY2022, #70 in FY2024 and #66 in FY2025; up 1 since FY2022.
68	Parliament LLC Top NAICS codes 331110 Iron and Steel Mills and Ferroalloy Manufacturing	$42,500	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
69	BTI Communications Group Limited Top NAICS codes 511210 Software Publishers	$39,000	<0.1%	Rank history: not on the FY2021 list, #89 in FY2022 and not on the FY2024–FY2025 lists; up 20 since FY2022.
70	Shell Energy North America (US) L.P. Through MP2 Energy LLC Top NAICS codes 221122 Electric Power Distribution	$37,779	<0.1%	Rank history: not on the FY2021 list, #78 in FY2022 and not on the FY2024–FY2025 lists; up 8 since FY2022.
71	Micro Focus Software Inc. Top NAICS codes 511210 Software Publishers	$36,849	<0.1%	Rank history: #69 in FY2021, #73 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
72	Cummins Inc. Top NAICS codes 811118 Other Automotive Mechanical and Electrical Repair and Maintenance	$35,640	<0.1%	Rank history: #96 in FY2021, #93 in FY2022 and not on the FY2024–FY2025 lists; up 21 since FY2022.
73	South Texas Lighthouse for the Blind Foundation Top NAICS codes 812331 Linen Supply	$34,923	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #87 in FY2025; new.
74	DLT Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$33,939	<0.1%	Rank history: #72 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
75	Wagner Equipment Co Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$33,595	<0.1%	Rank history: #95 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
76	Amigo Implement Company, Inc. Top NAICS codes 333111 Farm Machinery and Equipment Manufacturing	$31,408	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, not on the FY2024 list and #70 in FY2025; unchanged since FY2022.
77	Homeland Security and Management Solutions, Inc. Top NAICS codes 492110 Couriers and Express Delivery Services	$29,570	<0.1%	Rank history: #87 in FY2021, #77 in FY2022, #88 in FY2024 and #75 in FY2025; unchanged since FY2022.
78	J.p. Industries, Inc. Top NAICS codes 561720 Janitorial Services	$28,291	<0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2024 and #73 in FY2025; new.
79	Govsmart, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$28,106	<0.1%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2024 and #76 in FY2025; new.
80	Pyrocom Systems Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$26,500	<0.1%	Rank history: #66 in FY2021, #57 in FY2022, #64 in FY2024 and #82 in FY2025; down 23 since FY2022.
81	Trace3 Government, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$24,907	<0.1%	Rank history: #82 in FY2021, #81 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
82	Elevate Enterprises LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$24,346	<0.1%	Rank history: #84 in FY2021, #83 in FY2022, not on the FY2024 list and #79 in FY2025; up 1 since FY2022.
83	Redvector.COM LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$23,771	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 21 since FY2022.
84	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$23,727	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
85	LB Technology Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$23,707	<0.1%	Rank history: #79 in FY2021, #82 in FY2022, #76 in FY2024 and not on the FY2025 list; down 3 since FY2022.
86	Cartridge Technologies, LLC Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$22,800	<0.1%	Rank history: #63 in FY2021, #60 in FY2022 and not on the FY2024–FY2025 lists; down 26 since FY2022.
87	El Paso Water Utilities Public Service Board Top NAICS codes 221310 Water Supply and Irrigation Systems	$18,904	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #93 in FY2025; up 27 since FY2022.
88	Rinko & Associates, LLC Top NAICS codes 541380 Testing Laboratories and Services	$16,925	<0.1%	Rank history: #49 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; down 40 since FY2022.
89	Fedex Corp Through Federal Express Corp Top NAICS codes 492110 Couriers and Express Delivery Services	$15,562	<0.1%	Rank history: #83 in FY2021, #94 in FY2022, #84 in FY2024 and #83 in FY2025; up 5 since FY2022.
90	Noble Supply & Logistics LLC Top NAICS codes 332510 Hardware Manufacturing	$14,777	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
91	Alamo Industries, Inc. Top NAICS codes 423120 Motor Vehicle Supplies and New Parts Merchant Wholesalers	$14,656	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
92	United Rentals, Inc. Through United Rentals (North America), Inc. Top NAICS codes 335312 Motor and Generator Manufacturing	$14,220	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
93	Survey Equipment Services Inc Top NAICS codes 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables	$14,095	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
94	Tmrw LLC Top NAICS codes 561730 Landscaping Services	$13,320	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
95	One Gas Inc. Top NAICS codes 221310 Water Supply and Irrigation Systems	$12,925	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2024 and not on the FY2025 list; up 7 since FY2022.
96	Grande Garbage Collection Co. L.L.C. Top NAICS codes 562111 Solid Waste Collection	$12,480	<0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2024 and not on the FY2025 list; new.
97	D&H United Fueling Solutions Inc. Top NAICS codes 423830 Industrial Machinery and Equipment Merchant Wholesalers	$12,156	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
98	WCD Enterprises, LLC Top NAICS codes 561720 Janitorial Services	$11,875	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2024 and not on the FY2025 list; new.
99	Water Monitoring Solutions, Inc. Top NAICS codes 423490 Other Professional Equipment and Supplies Merchant Wholesalers	$11,790	<0.1%	Rank history: #27 in FY2021, #34 in FY2022, #55 in FY2024 and #88 in FY2025; down 65 since FY2022.
100	Inductive Automation, LLC Top NAICS codes 561990 All Other Support Services	$11,300	<0.1%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #90 in FY2025; new.

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100 of 132 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $141 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2022. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2022 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 International Boundary and Water Commission U.S.-Mexico contractors in FY2023?

1. Odin Environmental Solutions, LLC ($90.4M), 2. Veolia Water North America-West LLC ($23M), 3. CDM Smith Inc ($4.12M), 4. SAN Diego Gas & Electric Company ($2.51M), 5. Caterpillar Inc. ($2.47M), 6. At&T Inc. ($2.06M), 7. Tatonka Trucking Llc. ($1.37M), 8. Applied Security Technologies Inc. ($1.21M), 9. UNS Electric Inc. ($1.2M), 10. American Material Handling, Inc. ($799K).

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