William W Walker JR
Harpswell, ME Doing business as Environmental Engineer
- UEI
- NW83UBCW3CJ5
- CAGE
- 1YFU8
- Primary NAICS
- 541620 Environmental Consulting Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Sole Proprietorship
- NAICS codes registered in SAM.gov
- SAM.gov registration date
- Physical address
- 51 Potts Point Rd, Harpswell, ME 04079, USA
- Website
- wwwalker.net
- Employees
- 11-50
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 87 Engineering & Management Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Recent federal awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| E0 14398 service, water quality analysis/modeling service for everglades national park | Southeast Region | $145,000 | |
| Service, water quality analyses & modeling service | Southeast Region | $185,000 | |
| Service, water quality analysis and modeling services | Southeast Region | $165,000 | |
| Service, water quality program technical services for sfnrc | Southeast Region | $268,540 | |
| , x:nogrn, water quality program technical service for everglades national park | Southeast Region | $1,165,574 |
About William W Walker JR
William W Walker JR, operating as Environmental Engineer, is a sole proprietorship registered in SAM.gov since May 2002, specializing in water quality analysis and technical services for federal agencies. Based in Harpswell, Maine, this for-profit organization focuses on environmental engineering and consulting, with a primary emphasis on water quality research, modeling, and technical assessments. The business has established a consistent track record of providing specialized environmental services to federal agencies, particularly within the Southeast Region.
Over the past three years, William W Walker JR has been awarded multiple federal contracts centered exclusively on water quality program services, totaling approximately $578,540 in contract ceiling values. These contracts, all awarded by the Southeast Region of a civilian federal agency, have ranged from water quality analyses and modeling services to technical services for SFNRC (Southeast Florida Natural Resource Center). The contracts have been predominantly firm fixed-price agreements, with one contract specifically set aside for a Total Small Business. The services provided include detailed water quality program technical services, comprehensive water quality analyses, and sophisticated modeling services. Contract durations have consistently extended through September 30th of respective years, with the most recent contract awarded on September 5, 2025, valued at $145,000 and scheduled for completion on September 30, 2026. The consistent focus on water quality services suggests a specialized expertise in environmental monitoring and technical assessment within the federal contracting landscape.
Quick answers
What is William W Walker JR's UEI?
William W Walker JR's Unique Entity ID (UEI) in SAM.gov is NW83UBCW3CJ5.
What is William W Walker JR's CAGE code?
William W Walker JR's CAGE code is 1YFU8.
What is William W Walker JR's primary NAICS code?
William W Walker JR's primary NAICS code is 541620 (Environmental Consulting Services).
Where is William W Walker JR located?
William W Walker JR's physical address in SAM.gov is 51 Potts Point Rd, Harpswell, ME 04079, USA.
Is William W Walker JR registered in SAM.gov?
Yes. William W Walker JR's SAM.gov registration is active through February 26, 2027.
What is William W Walker JR's most recent federal award?
William W Walker JR's most recent federal contract award is E0 14398 service, water quality analysis/modeling service for everglades national park (140P5426C0029), from Southeast Region, on September 25, 2026.
On GovTribe
See William W Walker JR's full federal record
- Federal contract awards
- IDV awards
- Funding analysis by agency, NAICS and set-aside
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