Top 100 International Boundary and Water Commission U.S.-Mexico Contractors, Jul 2025–Jun 2026

Name: Top 100 International Boundary and Water Commission U.S.-Mexico Contractors, Jul 2025–Jun 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Agency page on GovTribe

The top 10 won 84% of International Boundary and Water Commission U.S.-Mexico contract dollars from July 2025 through June 2026

Contract obligations: $130,393,723 Net of deobligations, by the International Boundary and Water Commission U.S.-Mexico and its offices
Contractors: 119 Parent companies with an obligation
Largest contractor: Veolia Water West Operating Services Inc. $51.6 million, 38.9% of obligations
Data as of: Oct 24, 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	Veolia Water West Operating Services Inc. Top NAICS codes 221320 Sewage Treatment Facilities	$51,646,513	38.9%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #1 in FY2025; up 2 since Jul 2024–Jun 2025.
2	Sunstate Environmental Services Inc. Top NAICS codes 221320 Sewage Treatment Facilities	$17,520,666	13.2%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; new, not ranked in Jul 2024–Jun 2025.
3	Peter Kiewit Sons', Inc. Through Kiewit Infrastructure South Co Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$16,597,186	12.5%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Jul 2024–Jun 2025.
4	PCL Construction Inc Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$6,250,000	4.7%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #2 in FY2025; down 2 since Jul 2024–Jun 2025.
5	SAN Diego Gas & Electric Company Top NAICS codes 221122 Electric Power Distribution	$5,052,200	3.8%	Rank history: #3 in FY2021, #6 in FY2022, #4 in FY2023, #4 in FY2024 and #5 in FY2025; down 1 since Jul 2024–Jun 2025.
6	Stantec Inc. Through Stantec Consulting Services Inc. Top NAICS codes 541330 Engineering Services	$4,144,435	3.1%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; up 3 since Jul 2024–Jun 2025.
7	Texas Electrical & Testing Services LLC Top NAICS codes 237990 Other Heavy and Civil Engineering Construction 541330 Engineering Services 238910 Site Preparation Contractors	$3,231,100	2.4%	Rank history: #16 in FY2021, #23 in FY2022, #20 in FY2023, #16 in FY2024 and #7 in FY2025; unchanged since Jul 2024–Jun 2025.
8	Tatonka Trucking Llc. Top NAICS codes 562219 Other Nonhazardous Waste Treatment and Disposal	$2,311,680	1.7%	Rank history: not on the FY2021–FY2022 lists, #7 in FY2023, #22 in FY2024 and #15 in FY2025; up 21 since Jul 2024–Jun 2025.
9	City of San Diego Top NAICS codes 541380 Testing Laboratories and Services 221310 Water Supply and Irrigation Systems	$2,134,391	1.6%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #14 in FY2025; up 2 since Jul 2024–Jun 2025.
10	American Material Handling, Inc. Top NAICS codes 333120 Construction Machinery Manufacturing	$2,096,940	1.6%	Rank history: #21 in FY2021, #10 in FY2022, #10 in FY2023, #6 in FY2024 and #8 in FY2025; down 5 since Jul 2024–Jun 2025.
11	CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$1,587,886	1.2%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #10 in FY2025; down 1 since Jul 2024–Jun 2025.
12	UNS Energy Corporation Through Uns Electric, Inc. Top NAICS codes 221122 Electric Power Distribution	$1,444,691	1.1%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #9 in FY2025; up 1 since Jul 2024–Jun 2025.
13	At&T Inc. 2 awardees, including At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite)	$1,387,763	1.0%	Rank history: #6 in FY2021, #19 in FY2022, #6 in FY2023, #7 in FY2024 and #11 in FY2025; down 7 since Jul 2024–Jun 2025.
14	CDM Smith Inc. Through CDM Federal Programs Corporation Top NAICS codes 541330 Engineering Services	$1,207,767	0.9%	Rank history: #5 in FY2021, #66 in FY2022, not on the FY2023–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
15	Green Water Solutions, LLC Top NAICS codes 562910 Remediation Services	$1,080,247	0.8%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Government of the United States 2 awardees, including GSA Financial and Payroll Service Top NAICS codes 532112 Passenger Car Leasing 532111 Passenger Car Rental	$920,953	0.7%	Rank history: #17 in FY2021, #21 in FY2022, #12 in FY2023, #20 in FY2024 and #17 in FY2025; up 1 since Jul 2024–Jun 2025.
17	Ecosat LLC Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$861,932	0.6%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Jul 2024–Jun 2025.
18	Caterpillar Inc. Top NAICS codes 333120 Construction Machinery Manufacturing	$794,025	0.6%	Rank history: not on the FY2021–FY2022 lists, #5 in FY2023, #8 in FY2024 and #19 in FY2025; down 10 since Jul 2024–Jun 2025.
19	Momar, Incorporated Top NAICS codes 325199 All Other Basic Organic Chemical Manufacturing	$743,050	0.6%	Rank history: not on the FY2021 list, #27 in FY2022, #15 in FY2023, #21 in FY2024 and #27 in FY2025; up 7 since Jul 2024–Jun 2025.
20	JNV Group Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers 561621 Security Systems Services (except Locksmiths)	$727,936	0.5%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #21 in FY2025; up 35 since Jul 2024–Jun 2025.
21	Lh&J / Arcadis Joint Venture, L.L.P. Top NAICS codes 541330 Engineering Services	$725,529	0.5%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #13 in FY2025; unchanged since Jul 2024–Jun 2025.
22	Arcadis U.s., Inc. Top NAICS codes 541330 Engineering Services	$696,776	0.5%	Rank history: not on the FY2021 list, #26 in FY2022, not on the FY2023 list, #1 in FY2024 and #12 in FY2025; down 21 since Jul 2024–Jun 2025.
23	ACE Industries, Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$651,632	0.5%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Globex Corp Top NAICS codes 332312 Fabricated Structural Metal Manufacturing 333120 Construction Machinery Manufacturing	$638,690	0.5%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023, #13 in FY2024 and #23 in FY2025; down 10 since Jul 2024–Jun 2025.
25	CDW Government LLC Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers 541512 Computer Systems Design Services 334111 Electronic Computer Manufacturing	$539,634	0.4%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #32 in FY2025; up 37 since Jul 2024–Jun 2025.
26	WEX Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$522,676	0.4%	Rank history: #37 in FY2021, #30 in FY2022, #16 in FY2023, #24 in FY2024 and #25 in FY2025; down 4 since Jul 2024–Jun 2025.
27	Georgia Commercial and Residential Elevator, LLC Top NAICS codes 541350 Building Inspection Services	$383,900	0.3%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	I-2-I Solutions, Inc. Top NAICS codes 541330 Engineering Services	$316,520	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
29	Mechanical & Automation Solutions LLC Top NAICS codes 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables	$289,360	0.2%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30	Legend Technical Services of Arizona, Inc. Top NAICS codes 541380 Testing Laboratories and Services	$226,827	0.2%	Rank history: #30 in FY2021, #39 in FY2022, #26 in FY2023, #37 in FY2024 and #28 in FY2025; up 3 since Jul 2024–Jun 2025.
31	8X8, Inc. Top NAICS codes 517121 Telecommunications Resellers	$194,256	0.1%	Rank history: #36 in FY2021, #46 in FY2022, #37 in FY2023, #46 in FY2024 and #42 in FY2025; up 17 since Jul 2024–Jun 2025.
32	Odin Environmental Solutions, LLC Top NAICS codes 237990 Other Heavy and Civil Engineering Construction	$187,216	0.1%	Rank history: not on the FY2021 list, #1 in FY2022, #1 in FY2023, #65 in FY2024 and #35 in FY2025; up 32 since Jul 2024–Jun 2025.
33	Sterling Computers Corporation Top NAICS codes 334111 Electronic Computer Manufacturing	$180,247	0.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #58 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
34	Jamul Indian Village of California Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$174,320	0.1%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35	Quzara LLC Top NAICS codes 541519 Other Computer Related Services	$165,900	0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #36 in FY2025; up 1 since Jul 2024–Jun 2025.
36	Agua Pura Services LLC Top NAICS codes 333914 Measuring, Dispensing, and Other Pumping Equipment Manufacturing	$165,179	0.1%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Dani & Danny's Fabrication LLC Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$153,750	0.1%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
38	San Pasqual Band of Diegueno Mission Indians of California Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$150,920	0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Fedvet Construction Top NAICS codes 561730 Landscaping Services	$145,331	0.1%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40	Avid Core LLC Top NAICS codes 541199 All Other Legal Services	$135,346	0.1%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #74 in FY2025; down 2 since Jul 2024–Jun 2025.
41	Environmental Systems Research Institute, Inc. Top NAICS codes 511210 Software Publishers	$131,923	0.1%	Rank history: #41 in FY2021, not on the FY2022 list, #39 in FY2023, #32 in FY2024 and #43 in FY2025; up 1 since Jul 2024–Jun 2025.
42	Iron Bow Technologies, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$123,303	0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
43	Federal Contracts LLC Top NAICS codes 336112 Light Truck and Utility Vehicle Manufacturing	$115,128	0.1%	Rank history: #25 in FY2021, #20 in FY2022, #41 in FY2023, #29 in FY2024 and #48 in FY2025; down 15 since Jul 2024–Jun 2025.
44	Applied Security Technologies Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$115,091	0.1%	Rank history: #60 in FY2021, #40 in FY2022, #8 in FY2023, #40 in FY2024 and not on the FY2025 list; down 7 since Jul 2024–Jun 2025.
45	Burhani Enterprises Inc. Top NAICS codes 332510 Hardware Manufacturing	$113,036	0.1%	Rank history: not on the FY2021 list, #55 in FY2022, not on the FY2023–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	DHL Analytical Inc. Top NAICS codes 541380 Testing Laboratories and Services	$109,671	0.1%	Rank history: #57 in FY2021, #49 in FY2022, #42 in FY2023, not on the FY2024 list and #38 in FY2025; down 1 since Jul 2024–Jun 2025.
47	Idex Corporation Through Ads LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 221320 Sewage Treatment Facilities	$106,960	0.1%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #44 in FY2025; down 6 since Jul 2024–Jun 2025.
48	Communications Professionals Inc. Top NAICS codes 311920 Coffee and Tea Manufacturing	$98,351	0.1%	Rank history: not on the FY2021 list, #42 in FY2022, #49 in FY2023, #38 in FY2024 and #52 in FY2025; down 14 since Jul 2024–Jun 2025.
49	Sikich CPA LLC Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$97,932	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Jul 2024–Jun 2025.
50	Aquatic Informatics ULC Top NAICS codes 541511 Custom Computer Programming Services	$90,448	0.1%	Rank history: #50 in FY2021, #51 in FY2022, #45 in FY2023, #53 in FY2024 and #54 in FY2025; up 1 since Jul 2024–Jun 2025.
51	New TECH Solutions, Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$84,209	0.1%	Rank history: #59 in FY2021, #87 in FY2022, not on the FY2023 list, #52 in FY2024 and #56 in FY2025; up 2 since Jul 2024–Jun 2025.
52	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$78,088	0.1%	Rank history: #53 in FY2021, #44 in FY2022, not on the FY2023 list, #50 in FY2024 and not on the FY2025 list; down 6 since Jul 2024–Jun 2025.
53	LND Technical Services LLC Top NAICS codes 541380 Testing Laboratories and Services	$75,180	0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	Rendon Industry Solutions, LLC Top NAICS codes 561730 Landscaping Services	$72,960	0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #91 in FY2025; up 25 since Jul 2024–Jun 2025.
55	El Paso Electric Company Top NAICS codes 221122 Electric Power Distribution	$64,894	<0.1%	Rank history: #64 in FY2021, #68 in FY2022, #67 in FY2023, #70 in FY2024 and #66 in FY2025; up 10 since Jul 2024–Jun 2025.
56	Access Communications Group, LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors 811210 Electronic and Precision Equipment Repair and Maintenance	$64,167	<0.1%	Rank history: not on the FY2021 list, #15 in FY2022, #24 in FY2023, not on the FY2024 list and #47 in FY2025; up 2 since Jul 2024–Jun 2025.
57	Midway Trailers, Inc. Top NAICS codes 336212 Truck Trailer Manufacturing	$58,950	<0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	PDV Engineering LLC Top NAICS codes 541512 Computer Systems Design Services	$52,690	<0.1%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #65 in FY2025; down 31 since Jul 2024–Jun 2025.
59	Gator Pump Inc. Top NAICS codes 333914 Measuring, Dispensing, and Other Pumping Equipment Manufacturing	$43,500	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	Amigo Implement Company, Inc. Top NAICS codes 333112 Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing	$42,827	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #76 in FY2023, not on the FY2024 list and #70 in FY2025; new, not ranked in Jul 2024–Jun 2025.
61	Vernadero Group Inc. Top NAICS codes 541620 Environmental Consulting Services	$42,049	<0.1%	Rank history: #9 in FY2021, #43 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Pyrocom Systems Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$38,130	<0.1%	Rank history: #66 in FY2021, #57 in FY2022, #80 in FY2023, #64 in FY2024 and #82 in FY2025; down 15 since Jul 2024–Jun 2025.
63	JTF Business Systems Corporation Top NAICS codes 323113 Commercial Screen Printing	$36,036	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
64	Vector-Solutions.COM Inc. Through Redvector.com, LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$35,499	<0.1%	Rank history: not on the FY2021–FY2023 lists, #80 in FY2024 and #78 in FY2025; up 8 since Jul 2024–Jun 2025.
65	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$35,429	<0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; new, not ranked in Jul 2024–Jun 2025.
66	South Texas Lighthouse for the Blind Foundation Top NAICS codes 812331 Linen Supply	$33,841	<0.1%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2023, not on the FY2024 list and #87 in FY2025; up 43 since Jul 2024–Jun 2025.
67	J.p. Industries, Inc. Top NAICS codes 561720 Janitorial Services	$32,565	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023, #72 in FY2024 and #73 in FY2025; up 3 since Jul 2024–Jun 2025.
68	Pinnacle West Capital Corporation Through Liberty Utilities (Litchfield Park Water & Sewer) Corp. Top NAICS codes 221310 Water Supply and Irrigation Systems	$32,284	<0.1%	Rank history: #47 in FY2021, #50 in FY2022, #25 in FY2023, #47 in FY2024 and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
69	Arizona Department of Environmental Quality Dba: Adeq Top NAICS codes 562998 All Other Miscellaneous Waste Management Services 924110 Administration of Air and Water Resource and Solid Waste Management Programs	$31,327	<0.1%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and #53 in FY2025; down 19 since Jul 2024–Jun 2025.
70	Global Enterprise Systems LLC Through Global Enterprise, Inc. Top NAICS codes 336211 Motor Vehicle Body Manufacturing	$30,180	<0.1%	Rank history: not on the FY2021 list, #32 in FY2022, not on the FY2023 list, #33 in FY2024 and #31 in FY2025; down 47 since Jul 2024–Jun 2025.
71	Citibank, N.A. Top NAICS codes 921190 Other General Government Support	$30,061	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 48 since Jul 2024–Jun 2025.
72	Homeland Security and Management Solutions, Inc. Top NAICS codes 492110 Couriers and Express Delivery Services	$29,812	<0.1%	Rank history: #87 in FY2021, #77 in FY2022, #77 in FY2023, #88 in FY2024 and #75 in FY2025; up 10 since Jul 2024–Jun 2025.
73	Tilde Language Services, LLC Top NAICS codes 541930 Translation and Interpretation Services	$27,300	<0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; down 13 since Jul 2024–Jun 2025.
74	Govsmart, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$26,706	<0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, #75 in FY2024 and #76 in FY2025; down 3 since Jul 2024–Jun 2025.
75	Pifinity, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$26,166	<0.1%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #55 in FY2025; down 45 since Jul 2024–Jun 2025.
76	Anderson Machinery Co Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$23,320	<0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 7 since Jul 2024–Jun 2025.
77	Shell Energy North America (US) L.P. Through MP2 Energy LLC Top NAICS codes 221122 Electric Power Distribution	$22,784	<0.1%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #71 in FY2025; unchanged since Jul 2024–Jun 2025.
78	Berg Enterprises Inc. Top NAICS codes 561210 Facilities Support Services	$21,193	<0.1%	Rank history: not on the FY2021–FY2024 lists and #81 in FY2025; new, not ranked in Jul 2024–Jun 2025.
79	Elevate Enterprises LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$20,140	<0.1%	Rank history: #84 in FY2021, #83 in FY2022, #82 in FY2023, not on the FY2024 list and #79 in FY2025; up 9 since Jul 2024–Jun 2025.
80	FSR Consulting LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$20,126	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Jul 2024–Jun 2025.
81	American Classic Construction Inc. Top NAICS codes 332321 Metal Window and Door Manufacturing	$19,195	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Diam General Services LLC Top NAICS codes 541930 Translation and Interpretation Services	$18,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
83	Fedex Corp Through Federal Express Corp Top NAICS codes 492110 Couriers and Express Delivery Services	$17,632	<0.1%	Rank history: #83 in FY2021, #94 in FY2022, #89 in FY2023, #84 in FY2024 and #83 in FY2025; up 9 since Jul 2024–Jun 2025.
84	Computer Aided Solutions LLC Top NAICS codes 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables	$17,527	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; new, not ranked in Jul 2024–Jun 2025.
85	West Publishing Corporation Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$17,204	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	Grande Garbage Collection Co., L.L.C. Top NAICS codes 562111 Solid Waste Collection	$15,600	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Alsay Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$14,200	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022, not on the FY2023 list, #63 in FY2024 and #46 in FY2025; down 48 since Jul 2024–Jun 2025.
88	Water Monitoring Solutions, Inc. Top NAICS codes 332911 Industrial Valve Manufacturing	$13,876	<0.1%	Rank history: #27 in FY2021, #34 in FY2022, #99 in FY2023, #55 in FY2024 and #88 in FY2025; down 34 since Jul 2024–Jun 2025.
89	El Paso Water Utilities Public Service Board Top NAICS codes 221320 Sewage Treatment Facilities	$11,927	<0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023, not on the FY2024 list and #93 in FY2025; down 3 since Jul 2024–Jun 2025.
90	WCD Enterprises, LLC Top NAICS codes 561720 Janitorial Services	$11,375	<0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #90 in FY2024 and not on the FY2025 list; down 1 since Jul 2024–Jun 2025.
91	Inductive Automation, LLC Top NAICS codes 513110 Newspaper Publishers	$11,300	<0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, not on the FY2024 list and #90 in FY2025; down 7 since Jul 2024–Jun 2025.
92	One Gas, Inc. Top NAICS codes 221210 Natural Gas Distribution	$10,114	<0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Jul 2024–Jun 2025.
93	Wyler Industrial Works Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$9,400	<0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
94	Harmonbk LLC Top NAICS codes 561720 Janitorial Services	$8,791	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	K-B Insurance Agency, Inc. Top NAICS codes 524298 All Other Insurance Related Activities	$8,252	<0.1%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and #100 in FY2025; up 1 since Jul 2024–Jun 2025.
96	Brainstorm, Inc. Top NAICS codes 423420 Office Equipment Merchant Wholesalers	$7,187	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 4 since Jul 2024–Jun 2025.
97	City of Las Cruces Top NAICS codes 221310 Water Supply and Irrigation Systems	$6,141	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 4 since Jul 2024–Jun 2025.
98	Covos, Gloria Top NAICS codes 561720 Janitorial Services	$5,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 4 since Jul 2024–Jun 2025.
99	County of Santa Cruz Top NAICS codes 562212 Solid Waste Landfill	$4,800	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 11 since Jul 2024–Jun 2025.
100	Cummins Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$4,744	<0.1%	Rank history: #96 in FY2021, #93 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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100 of 119 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 $133 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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.
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 Jul 2025–Jun 2026?

1. Veolia Water West Operating Services Inc. ($51.6M), 2. Sunstate Environmental Services Inc. ($17.5M), 3. Peter Kiewit Sons', Inc. ($16.6M), 4. PCL Construction Inc ($6.25M), 5. SAN Diego Gas & Electric Company ($5.05M), 6. Stantec Inc. ($4.14M), 7. Texas Electrical & Testing Services LLC ($3.23M), 8. Tatonka Trucking Llc. ($2.31M), 9. City of San Diego ($2.13M), 10. American Material Handling, Inc. ($2.1M).

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