Top 100 International Boundary and Water Commission U.S.-Mexico Contractors, FY2021

Name: Top 100 International Boundary and Water Commission U.S.-Mexico Contractors, FY2021
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Agency page on GovTribe

The top 10 won 72% of FY2021 International Boundary and Water Commission U.S.-Mexico contract dollars

Contract obligations: $56,007,155 Net of deobligations, by the International Boundary and Water Commission U.S.-Mexico and its offices
Contractors: 189 Parent companies with an obligation
Largest contractor: Veolia Water North America-West LLC $14.3 million, 25.0% 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	Veolia Water North America-West LLC 2 awardees, including Veolia Water West Operating Services Inc. Top NAICS codes 221320 Sewage Treatment Facilities	$14,342,291	25.0%	Rank history: #3 in FY2022, #2 in FY2023, #5 in FY2024 and not on the FY2025 list; up 2 since FY2020.
2	SAK Construction LLC Top NAICS codes 237110 Water and Sewer Line and Related Structures Construction	$13,858,476	24.1%	Rank history: #2 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
3	SAN Diego Gas & Electric Company Top NAICS codes 221122 Electric Power Distribution	$4,263,782	7.4%	Rank history: #6 in FY2022, #4 in FY2023, #4 in FY2024 and #5 in FY2025; up 12 since FY2020.
4	O Garcia II LLC Top NAICS codes 212321 Construction Sand and Gravel Mining	$1,661,625	2.9%	Rank history: not on the FY2022–FY2025 lists; up 52 since FY2020.
5	Camp Dresser & Mckee Inc. Through CDM Federal Programs Corporation Top NAICS codes 541330 Engineering Services	$1,591,064	2.8%	Rank history: #66 in FY2022, not on the FY2023–FY2024 lists and #20 in FY2025; new, not ranked in FY2020.
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) 541519 Other Computer Related Services	$1,318,489	2.3%	Rank history: #19 in FY2022, #6 in FY2023, #7 in FY2024 and #11 in FY2025; up 42 since FY2020.
7	Swift Operating Partners LLC Top NAICS codes 238910 Site Preparation Contractors	$1,257,012	2.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
8	City of San Diego Top NAICS codes 541380 Testing Laboratories and Services	$1,198,326	2.1%	Rank history: #8 in FY2022 and not on the FY2023–FY2025 lists; up 44 since FY2020.
9	Vernadero Group Inc. Top NAICS codes 541620 Environmental Consulting Services	$992,758	1.7%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
10	UNS Electric Inc. Top NAICS codes 221122 Electric Power Distribution	$991,298	1.7%	Rank history: #14 in FY2022, #9 in FY2023, #23 in FY2024 and not on the FY2025 list; up 63 since FY2020.
11	Desert Dump Truck Rental, Inc. Top NAICS codes 562111 Solid Waste Collection	$935,000	1.6%	Rank history: #12 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
12	Powergen Controls LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance 332313 Plate Work Manufacturing 332312 Fabricated Structural Metal Manufacturing	$761,205	1.3%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
13	Global Enterprise, Inc. Top NAICS codes 336211 Motor Vehicle Body Manufacturing 339113 Surgical Appliance and Supplies Manufacturing	$756,115	1.3%	Rank history: #38 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
14	Panacea Construction Group LLC Top NAICS codes 561210 Facilities Support Services	$723,500	1.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
15	Govplace, LLC Top NAICS codes 541519 Other Computer Related Services	$714,376	1.2%	Rank history: #22 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
16	Texas Electrical & Testing Services LLC Top NAICS codes 238990 All Other Specialty Trade Contractors 332813 Electroplating, Plating, Polishing, Anodizing, and Coloring 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$713,252	1.2%	Rank history: #23 in FY2022, #20 in FY2023, #16 in FY2024 and #7 in FY2025; up 3 since FY2020.
17	Government of the United States 2 awardees, including GSA Financial and Payroll Service and Publishing Office, US Government Top NAICS codes 532112 Passenger Car Leasing 333244 Printing Machinery and Equipment Manufacturing	$656,062	1.1%	Rank history: #21 in FY2022, #12 in FY2023, #20 in FY2024 and #17 in FY2025; new, not ranked in FY2020.
18	Me Automation, LLC Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$540,678	0.9%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; down 8 since FY2020.
19	Mac Gc-Electric, Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$539,186	0.9%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
20	AECOM 2 awardees, including URS Group, Inc. and AECOM Technical Services, Inc. Top NAICS codes 541330 Engineering Services	$477,561	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
21	American Material Handling, Inc. Top NAICS codes 333924 Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing	$421,616	0.7%	Rank history: #10 in FY2022, #10 in FY2023, #6 in FY2024 and #8 in FY2025; new, not ranked in FY2020.
22	Granchelli Construction L.L.C. Top NAICS codes 238320 Painting and Wall Covering Contractors	$377,000	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Polydyne Inc. Top NAICS codes 325998 All Other Miscellaneous Chemical Product and Preparation Manufacturing	$374,849	0.7%	Rank history: not on the FY2022–FY2025 lists; down 5 since FY2020.
24	Verizon Communications Inc. 2 awardees, including MCI Communications Services LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$353,865	0.6%	Rank history: #25 in FY2022, #18 in FY2023 and not on the FY2024–FY2025 lists; up 95 since FY2020.
25	Federal Contracts LLC Top NAICS codes 333120 Construction Machinery Manufacturing 333111 Farm Machinery and Equipment Manufacturing 336112 Light Truck and Utility Vehicle Manufacturing	$327,270	0.6%	Rank history: #20 in FY2022, #41 in FY2023, #29 in FY2024 and #48 in FY2025; up 2 since FY2020.
26	Temple Engineering Inc. Top NAICS codes 325199 All Other Basic Organic Chemical Manufacturing	$315,360	0.5%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
27	Water Monitoring Solutions, Inc. Top NAICS codes 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables	$287,215	0.5%	Rank history: #34 in FY2022, #99 in FY2023, #55 in FY2024 and #88 in FY2025; up 98 since FY2020.
28	Kearney & Company, P.C. Top NAICS codes 541211 Offices of Certified Public Accountants	$248,977	0.4%	Rank history: #35 in FY2022, #23 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
29	Swanson Services LLC Top NAICS codes 561612 Security Guards and Patrol Services	$244,897	0.4%	Rank history: #28 in FY2022, #46 in FY2023, #41 in FY2024 and #94 in FY2025; down 4 since FY2020.
30	Legend Technical Services of Arizona, Inc. Top NAICS codes 541380 Testing Laboratories and Services	$206,825	0.4%	Rank history: #39 in FY2022, #26 in FY2023, #37 in FY2024 and #28 in FY2025; down 4 since FY2020.
31	The Spencer Turbine Company Top NAICS codes 333413 Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing	$204,442	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
32	CDW Corporation Through CDW Government LLC Top NAICS codes 511210 Software Publishers	$202,350	0.4%	Rank history: #24 in FY2022, #21 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
33	Iparametrics, LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$180,299	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	Fong Sinn Construction LLC Top NAICS codes 238190 Other Foundation, Structure, and Building Exterior Contractors	$156,048	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
35	Mary Helen Parkey Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$129,381	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
36	8X8, Inc. Top NAICS codes 561421 Telephone Answering Services	$127,058	0.2%	Rank history: #46 in FY2022, #37 in FY2023, #46 in FY2024 and #42 in FY2025; up 3 since FY2020.
37	WEX Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$126,701	0.2%	Rank history: #30 in FY2022, #16 in FY2023, #24 in FY2024 and #25 in FY2025; unchanged since FY2020.
38	Prince of Wales Tribal Enterprise Consortium LLC Top NAICS codes 541519 Other Computer Related Services	$126,065	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
39	Dell Federal Systems L.P. Through Dell Marketing L.P. Top NAICS codes 511210 Software Publishers	$124,746	0.2%	Rank history: not on the FY2022–FY2025 lists; up 15 since FY2020.
40	Idex Corporation Through Ads LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$119,400	0.2%	Rank history: #47 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
41	Environmental Systems Research Institute, Inc. Top NAICS codes 511210 Software Publishers	$119,125	0.2%	Rank history: not on the FY2022 list, #39 in FY2023, #32 in FY2024 and #43 in FY2025; up 17 since FY2020.
42	Sierra Valley Contractors LLC Top NAICS codes 562111 Solid Waste Collection	$116,200	0.2%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
43	Power Engineering Services, Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$110,291	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Stell Environmental Enterprises Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$110,216	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
45	Evoqua Water Technologies LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$104,256	0.2%	Rank history: not on the FY2022–FY2025 lists; down 7 since FY2020.
46	Gulf South Research Corp Top NAICS codes 541620 Environmental Consulting Services	$101,827	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 16 since FY2020.
47	Pinnacle West Capital Corporation 2 awardees, including Liberty Utilities (Litchfield Park Water & Sewer) Corp. and Arizona Public Service Company Top NAICS codes 221310 Water Supply and Irrigation Systems 221122 Electric Power Distribution	$97,994	0.2%	Rank history: #50 in FY2022, #25 in FY2023, #47 in FY2024 and #99 in FY2025; up 143 since FY2020.
48	Egc-Ageiss LLC Top NAICS codes 541620 Environmental Consulting Services	$91,608	0.2%	Rank history: not on the FY2022–FY2023 lists, #15 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
49	Rinko & Associates, LLC Top NAICS codes 325180 Other Basic Inorganic Chemical Manufacturing 541380 Testing Laboratories and Services	$84,153	0.1%	Rank history: #48 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 30 since FY2020.
50	Aquatic Informatics ULC Top NAICS codes 541511 Custom Computer Programming Services	$82,000	0.1%	Rank history: #51 in FY2022, #45 in FY2023, #53 in FY2024 and #54 in FY2025; up 1 since FY2020.
51	Integrated Security Solutions Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths) 238210 Electrical Contractors and Other Wiring Installation Contractors	$80,139	0.1%	Rank history: not on the FY2022–FY2025 lists; down 46 since FY2020.
52	Midwest Electrical Construction Inc. Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$77,000	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
53	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 519130 Internet Publishing and Broadcasting and Web Search Portals	$70,929	0.1%	Rank history: #44 in FY2022, not on the FY2023 list, #50 in FY2024 and not on the FY2025 list; up 77 since FY2020.
54	Gulf Coast Electric Motor Service, Inc. Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$70,176	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
55	NVS Corporate Services, Inc. Top NAICS codes 561210 Facilities Support Services 561730 Landscaping Services	$67,679	0.1%	Rank history: #56 in FY2022, #62 in FY2023, #66 in FY2024 and #62 in FY2025; up 14 since FY2020.
56	Edge Digital Group, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$62,530	0.1%	Rank history: #98 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
57	DHL Analytical Inc. Top NAICS codes 541380 Testing Laboratories and Services	$55,497	0.1%	Rank history: #49 in FY2022, #42 in FY2023, not on the FY2024 list and #38 in FY2025; down 7 since FY2020.
58	Wilson-Freese and Nichols Joint Venture Top NAICS codes 541330 Engineering Services	$51,875	0.1%	Rank history: #18 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
59	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$51,685	0.1%	Rank history: #87 in FY2022, not on the FY2023 list, #52 in FY2024 and #56 in FY2025; down 10 since FY2020.
60	Applied Security Technologies Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$49,998	0.1%	Rank history: #40 in FY2022, #8 in FY2023, #40 in FY2024 and not on the FY2025 list; up 10 since FY2020.
61	Bhayana Brothers LLC Top NAICS codes 423830 Industrial Machinery and Equipment Merchant Wholesalers	$48,096	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
62	Hogger Enterprises LLC Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$46,480	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
63	Cartridge Technologies, LLC Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$42,543	0.1%	Rank history: #60 in FY2022, #86 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
64	El Paso Electric Company Top NAICS codes 221122 Electric Power Distribution	$39,450	0.1%	Rank history: #68 in FY2022, #67 in FY2023, #70 in FY2024 and #66 in FY2025; up 14 since FY2020.
65	Paradigm Mechanical Corp. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$38,298	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Pyrocom Systems Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$37,612	0.1%	Rank history: #57 in FY2022, #80 in FY2023, #64 in FY2024 and #82 in FY2025; up 2 since FY2020.
67	Norrisleal, LLC Top NAICS codes 333618 Other Engine Equipment Manufacturing	$36,962	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
68	APL Access & Security, Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$36,173	0.1%	Rank history: #63 in FY2022, #50 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
69	Micro Focus Software Inc. Top NAICS codes 511210 Software Publishers	$35,025	0.1%	Rank history: #73 in FY2022, #71 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
70	At&T Enterprises, LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$34,747	0.1%	Rank history: not on the FY2022–FY2025 lists; down 34 since FY2020.
71	Ameripower LLC Top NAICS codes 221122 Electric Power Distribution	$33,540	0.1%	Rank history: #92 in FY2022 and not on the FY2023–FY2025 lists; up 4 since FY2020.
72	DLT Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$32,116	0.1%	Rank history: not on the FY2022 list, #74 in FY2023 and not on the FY2024–FY2025 lists; up 12 since FY2020.
73	Danaher Corporation 2 awardees, including Hach Company and Trojan Technologies Group ULC Top NAICS codes 334513 Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 333318 Other Commercial and Service Industry Machinery Manufacturing	$31,945	0.1%	Rank history: #84 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; down 53 since FY2020.
74	Wrigglesworth Enterprises Inc. Top NAICS codes 333999 All Other Miscellaneous General Purpose Machinery Manufacturing 332510 Hardware Manufacturing	$31,738	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
75	Ideals-Ageiss, LLC Top NAICS codes 541620 Environmental Consulting Services	$29,872	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
76	Huntsville Tractor & Equipment Inc. Top NAICS codes 333111 Farm Machinery and Equipment Manufacturing	$28,977	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
77	Titan Pipe & Supply Co Inc. Top NAICS codes 332919 Other Metal Valve and Pipe Fitting Manufacturing	$28,050	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
78	Kelyn Technologies, Inc. Top NAICS codes 423430 Computer and Computer Peripheral Equipment and Software Merchant Wholesalers	$27,819	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	LB Technology Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$27,049	<0.1%	Rank history: #82 in FY2022, #85 in FY2023, #76 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
80	IAC / Instrumentation and Controls LLC Top NAICS codes 332911 Industrial Valve Manufacturing	$25,076	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
81	Ecosystem Sciences Top NAICS codes 541620 Environmental Consulting Services	$24,940	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
82	Trace3 Government, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$24,907	<0.1%	Rank history: #81 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 4 since FY2020.
83	Fedex Corp Through Federal Express Corp Top NAICS codes 492110 Couriers and Express Delivery Services	$23,242	<0.1%	Rank history: #94 in FY2022, #89 in FY2023, #84 in FY2024 and #83 in FY2025; new, not ranked in FY2020.
84	Elevate Enterprises LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$22,560	<0.1%	Rank history: #83 in FY2022, #82 in FY2023, not on the FY2024 list and #79 in FY2025; up 38 since FY2020.
85	Energy EPC Solutions, LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$22,352	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
86	Kestrel Power Engineering LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$21,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
87	Homeland Security and Management Solutions, Inc. Top NAICS codes 492110 Couriers and Express Delivery Services	$20,309	<0.1%	Rank history: #77 in FY2022, #77 in FY2023, #88 in FY2024 and #75 in FY2025; up 6 since FY2020.
88	S I T Corporation Top NAICS codes 423610 Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers	$19,970	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
89	Arcadis N.V. Through Arcadis U.s., Inc. Top NAICS codes 541330 Engineering Services	$19,850	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 68 since FY2020.
90	Red Hill Ventures LLC Top NAICS codes 332999 All Other Miscellaneous Fabricated Metal Product Manufacturing	$19,500	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
91	Hyundai Ideal Electric Co. Through Ideal Electric Power Co. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$19,450	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
92	Aikens Powerful and Elite Solutions, LLC Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$19,274	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
93	Elastec Inc. Top NAICS codes 326199 All Other Plastics Product Manufacturing	$18,867	<0.1%	Rank history: #33 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
94	Liberty Utilities (Rio Rico Water & Sewer) Corp. Top NAICS codes 221310 Water Supply and Irrigation Systems	$17,556	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 34 since FY2020.
95	Wagner Equipment Co Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$17,311	<0.1%	Rank history: not on the FY2022 list, #75 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
96	Cummins Inc. Top NAICS codes 811118 Other Automotive Mechanical and Electrical Repair and Maintenance	$15,837	<0.1%	Rank history: #93 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
97	State of Arizona Through Arizona Dept of Environmental Quality Top NAICS codes 924110 Administration of Air and Water Resource and Solid Waste Management Programs	$15,700	<0.1%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
98	Plitt Crane & Equipment, Inc. Top NAICS codes 238990 All Other Specialty Trade Contractors	$15,675	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Bestway Electric Motor Service Co Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$15,650	<0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
100	Cellentia Information Technology Company Top NAICS codes 541511 Custom Computer Programming Services	$14,768	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.

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100 of 189 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 $57.4 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 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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 FY2021?

1. Veolia Water North America-West LLC ($14.3M), 2. SAK Construction LLC ($13.9M), 3. SAN Diego Gas & Electric Company ($4.26M), 4. O Garcia II LLC ($1.66M), 5. Camp Dresser & Mckee Inc. ($1.59M), 6. At&T Inc. ($1.32M), 7. Swift Operating Partners LLC ($1.26M), 8. City of San Diego ($1.2M), 9. Vernadero Group Inc. ($993K), 10. UNS Electric Inc. ($991K).

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