Questions surrounding engineering company Sigma and its expanding role in Guyana’s publicly funded water sector require a careful distinction between the company’s long-established Bangladesh operation and the Guyanese entity registered in 2022.
The distinction has become particularly relevant following allegations raised by Opposition Leader Azruddin Mohamed concerning Sigma’s government contracts and the company’s relationship with Guyana.
Sigma Engineers has rejected Mohamed’s allegations and said its Guyanese entity, Sigma Engineers Ltd Inc., was properly registered on October 6, 2022. The company also maintains that its first contract held by that Guyanese entity was awarded in 2026 following a national competitive bidding process administered through the National Procurement and Tender Administration Board (NPTAB). Sigma has indicated that it is taking legal action over what it describes as serious misrepresentations.
Public records suggests Sigma’s business presence in Guyana predates the 2026 contract cited by the company.
Government records show that in October 2022, Guyana Water Incorporated (GWI) awarded contracts for seven new water-treatment plants to three international companies, including Sigma Engineers Limited of Bangladesh. The programme was valued at approximately $8.5 billion and was intended to benefit about 181,000 residents.
Newsroom Guyana similarly reported at the time that Sigma Engineering Limited was a Bangladeshi company contracted alongside firms from India and Mexico to construct the facilities.
That establishes an important chronology: the Sigma business operating from Bangladesh was already undertaking major Government-funded projects in Guyana in 2022, the same year the Guyanese entity Sigma Engineers Ltd Inc. was registered locally.
The company’s work subsequently expanded.
In 2023, the Department of Public Information (DPI)reported that Sigma Engineering Limited was constructing the $3.6 billion Caledonia Water Treatment Plant.
In April 2024, DPI reported that Sigma Engineers Limited was constructing the $1.9 billion Bachelor’s Adventure Water Treatment Plant, part of GWI’s $40 billion Coastal Water Treatment Infrastructure Programme.
And in October 2025, President Irfaan Ali commissioned the $1.3 billion Cummings Lodge Water Treatment Plant, which DPI said was built by Sigma Engineers Ltd with Guyanese workers.
There is also documentary evidence of the locally registered entity participating in procurement. An NPTAB tender evaluation dated October 28, 2025 lists Sigma Engineers Ltd Inc. as one of eight bidders for the installation of filter tanks and pumps at the Sophia Water Treatment Plant. Sigma submitted a bid of $448,026,750, against an engineer’s estimate of $454,748,000.
These records do not, by themselves, establish that the Bangladesh company and the Guyanese-registered company are legally identical, nor do they establish wrongdoing in the awarding of any contract.
They do, however, demonstrate why the distinction between the entities matters.
Sigma’s 2003 date refers to its Bangladesh operation, while October 6, 2022 refers to the registration of Sigma Engineers Ltd Inc. in Guyana. Public records further show that a Sigma entity from Bangladesh was already receiving substantial GWI contracts in Guyana in October 2022.
The company’s position is therefore materially different from any suggestion that Sigma’s engineering business was created in Guyana in 2022. At the same time, the existence of a Guyanese-registered entity means questions about its ownership, directors, shareholders, corporate relationship with the Bangladesh operation and specific contractual history are legitimate matters for public scrutiny.
What should not be done, however, is to convert those questions into allegations of misconduct without evidence.
The public record establishes that Sigma has become a significant contractor in Guyana’s water-treatment expansion, at a time when Government is investing billions of dollars to improve access to treated water.
That makes transparency essential.
Who received each contract? Which legal entity submitted the bid? Who owns that entity? How were the contracts evaluated? Who were the competing bidders? And were all procurement requirements followed?
Those are reasonable questions in a democracy, particularly where billions of dollars in public funds are involved.
The available evidence shows a company with Bangladesh origins dating to 2003, a Guyanese corporate registration dating to 2022 and a documented record of major water-sector projects in Guyana beginning at least in 2022.
The allegations now surrounding Sigma should ultimately be tested against procurement records, corporate filings and other verifiable evidence.
