Federal contractor · WALNUT CREEK, CA

CAROLLO ENGINEERS INC

No contract obligations recorded for CAROLLO ENGINEERS INC in FY2026. Since FY2017: $2M. It also received $3.2M in federal grants and other assistance in FY2026.

Obligations · FY2026
$0
New awards
0
Sole-source
—
Single offer
—
UEI
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Other than small business
Open in the contracts explorerRelationship graph

Spending by fiscal year

Obligations per federal fiscal year (October–September).

  1. -2KFY2017
  2. 175KFY2018
  3. 0FY2019
  4. 90KFY2020
  5. 0FY2021
  6. 1.8MFY2024

Top buying agencies

Obligations in FY2026.

No contract obligations recorded for CAROLLO ENGINEERS INC in FY2026.

What was bought · Where the work was performed

Obligations in FY2026.

What was bought

Where the work was performed

Integrity signals

Shares of the year's obligations, next to the country's.

Federal grants & assistance received

Grants, loans (counted at their subsidy cost), direct payments and insurance, by fiscal year of the action (USAspending.gov, FABS). Reported apart from contracts and never added to them.

CAROLLO ENGINEERS INC received $3.2M in federal assistance in FY2026, on 7 actions (4 new awards). Its largest program was 81.135 · Advanced Research Projects Agency - Energy ($2.4M).

Assistance · FY2026
$3.2M
New awards
4
Actions
7
Since FY2021
$8.7M

Assistance by fiscal year

  1. 2.4MFY2021
  2. 641.9KFY2022
  3. 2.5MFY2023
  4. 0FY2024
  5. -55.9KFY2025
  6. 3.2MFY2026

By type

  1. Grants$3.2M100%

Top programs

  1. 81.135 · Advanced Research Projects Agency - Energy$2.4M75%
  2. 15.560 · Secure Water Act – Research Agreements$454.6K14%
  3. 15.506 · Water Desalination Research and Development$342.1K11%

Awarding agencies

  1. Department of Energy$2.4M75%
  2. Bureau of Reclamation$796.7K25%
    Department of the Interior

Largest awards

  1. CAROLLO ENGINEERS, INC. NEW COOPERATIVE AGREEMENT. PROJECT TITLE: SELECTIVE RECOVERY OF CRITICAL METALS FROM PRODUCED WATER USING…$2.4M
    81.135 · Advanced Research Projects Agency - Energy· Department of Energy· Cooperative agreement· May 7, 2026 – Jun 18, 2026· DEAR0002097
  2. MAINSTREAM AEROBIC WASTEWATER TREATMENT USING PROCESS-PRODUCED HYDROGEN PEROXIDE$2.3M
    81.086 · Conservation Research and Development· Department of Energy· Cooperative agreement· Sep 27, 2023 – Oct 9, 2025· DEEE0010992
  3. REVERSE OSMOSIS BASED WATER REUSE PRODUCES A HIGH QUALITY PURIFIED WATER, BUT THERE IS ROOM FOR SIGNIFICANT IMPROVEMENT TO OPTIMIZE ENERGY…$641.9K
    15.506 · Water Desalination Research and Development· Bureau of Reclamation· Cooperative agreement· Sep 7, 2022 – Feb 27, 2026· R22AC00437
  4. REVERSE OSMOSIS (RO) IS REQUIRED FOR INDIRECT POTABLE REUSE (IPR) AND DIRECT POTABLE REUSE (DPR) IN CALIFORNIA, AND LIKELY REQUIRED OR…$342.1K
    15.506 · Water Desalination Research and Development· Bureau of Reclamation· Cooperative agreement· Jun 30, 2026 – Jun 30, 2026· R26AC00032
  5. REDUCING ENERGY CONSUMPTION AND IMPROVING THE CONTROL OF CONTAMINANTS OF EMERGING CONCERN (CECS), INCLUDING PER AND POLYFLUOROALKYL…$299.1K
    15.560 · Secure Water Act – Research Agreements· Bureau of Reclamation· Cooperative agreement· Mar 5, 2026 – Mar 5, 2026· R25AC00619
  6. WATER RECLAMATION AND REUSE HAS BECOME AN IMPORTANT PART OF WATER PORTFOLIO AS A RESPONSE TO CURRENT DEMANDS AND CHALLENGES THAT…$155.5K
    15.560 · Secure Water Act – Research Agreements· Bureau of Reclamation· Cooperative agreement· Jul 28, 2026 – Jul 28, 2026· R26AC00132

Source: Federal financial assistance transactions (Financial Assistance Broker Submission) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 6, 2026, loaded Oct 6, 2026 · FY2021–FY2026.

Subawards

Matched by Unique Entity ID: the first-tier subawards this organization reported as a prime recipient, and those primes reported paying it.

As a prime: who it pays · FY2026

No subawards reported as a prime in FY2026.

As a sub-recipient: who pays it · FY2026

  • Sub-contracts: $4.4M (2 subawards)

2 primes

  1. EASTERN RESEARCH GROUP INC$4.3M98%
    CONCORD, MA · 1 subaward
  2. PANTEXAS DETERRENCE, LLC$98.4K2.2%
    LYNCHBURG, VA · 1 subaward

By fiscal year

  • FY2021: $0 paid out · $89.2K received
  • FY2022: $0 paid out · $48.1K received
  • FY2023: $0 paid out · $88.1K received
  • FY2024: $0 paid out · $565.8K received
  • FY2025: $0 paid out · $209K received
  • FY2026: $0 paid out · $4.4M received

Primes report first-tier subawards of $30,000 or more themselves, and many go unreported (GAO-24-106214). Reporting moved from FSRS to SAM.gov in March 2025 and fewer sub-contracts have been reported since. Amounts are what primes reported; they are never added to prime award totals.

Source: Subawards (first-tier sub-contracts and sub-grants reported under FFATA) (U.S. Department of the Treasury, USAspending.gov (reports filed in SAM.gov, formerly FSRS)), data current to Oct 3, 2026, loaded Oct 3, 2026 · Subawards loaded from FY2021.

Teaming partners

Companies this company reported paying, primes that reported paying it, from FFATA subaward reports.

Companies it pays

No subawards reported to other companies.

Primes that pay it

4 companies · $5.4M reported

  1. EASTERN RESEARCH GROUP INC$4.6M
    CONCORD, MA · 3 subawards · Management, scientific, and technical consulting services
  2. CONSOLIDATED NUCLEAR SECURITY, LLC$491.2K
    FREDERICK, MD · 5 subawards · Facilities support services
  3. THE CADMUS GROUP LLC$209K
    WALTHAM, MA · 1 subaward

Showing the top 3 of each list. Open the profile for potential partners and the full lists.

Primes report first-tier subawards of $30,000 or more themselves, and many go unreported (GAO-24-106214). Reporting moved from FSRS to SAM.gov in March 2025 and fewer sub-contracts have been reported since. Amounts are what primes reported; they are never added to prime award totals.

Source: Subawards (first-tier sub-contracts and sub-grants reported under FFATA) (U.S. Department of the Treasury, USAspending.gov (reports filed in SAM.gov, formerly FSRS)), data current to Oct 3, 2026, loaded Oct 3, 2026 · Subawards loaded from 2021.

Source: Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 6, 2026, loaded Oct 6, 2026.