Three companies controlled by brothers Carmel (known as Charles, or Ċaqnu) and Paul Polidano are the largest identified commercial consumers of free groundwater from metered boreholes on their properties. This emerged in Profit in Every Drop, a three-country investigation led by Amphora Media.

Public groundwater from boreholes and pumping galleries covers close to 42% of the total public water supply. Nearly two-thirds of monitoring stations across the islands showed that groundwater levels decreased between 2000 and 2021 due to abstraction.

Data obtained by Amphora Media from the Environment and Resources Authority (ERA) show that Polidano Brothers Ltd, Monte Kristo Vineyards Ltd and Polmesh Ltd have extracted nearly 227.5 million litres of water in 2020-2024 from their metered boreholes.

Monte Kristo Vineyards is the single largest extractor in the data set, extracting nearly 118.7 million litres of groundwater. It has four registered boreholes, but ERA had data from only one of them. This means that the company’s water footprint may be even larger. The boreholes are located in Mqabba, Qrendi and Siggiewi.

Polidano Group did not respond to Amphora Media’s questions about its water consumption and operations.

University of Malta’s water management expert Dr Julian Mamo says that some water sources are more important than others. “It’s all about drawdown,” he says, explaining how water in aquifers sits in lens-shaped structures, and intense extraction at the top of the aquifer would lower the water level for all nearby users, leading to seawater intrusion. “It very much depends on where you are. So the problem is the uncontrolled use from a single point,” he said.

The Planning Authority’s map shows that the Monte Kristo Vineyards site lies next to water infrastructure important for the public supply.

One of the boreholes that has no data is registered for private water supply. By law, private water suppliers provide water for commercial food and drink production, consumption on hospitality and restaurant premises, hospitals, and bottling. They must be registered.

Monte Kristo Vineyards has not filed accounts with the Malta Business Registry in almost 16 years. It risked being struck off in 2024, but avoided the procedure.

Malta Business Registry declined to comment on this specific case, but said that generally speaking, the striking off process can be halted “where an objection is received from a creditor, where the Registry is informed of pending judicial proceedings, or where the company demonstrates that it remains operational.”

Polmesh was set up to manufacture and supply building materials, and for steel manufacturing. It extracted nearly 62 million litres of water from its borehole in 2020-2024. Polidano Brothers extracted a further 47 million litres.

When asked whether commercial water supply, including by Montekristo Direct for government tenders, comes from an unmetered borehole, government authorities did not reply.

Supported by the government

Polidano companies have received government contracts for various construction, excavation and repair works. The Monte Kristo complex has hosted government-promoted events: a start-up festival, a statue collectors’ event, and an Arts Council workshop for children. Another company co-owned by Polidano, which specialises in alcohol and beverages, got a tender to supply soft drinks.

Charles Polidano had reportedly accrued some €40 million in unpaid taxes by 2021, before settling for less than €10 million with the tax commissioner.

Polidano Brothers ended the year 2023 with a loss of nearly €6 million, which it attributed to construction delays despite construction contracts worth €32 million and revenues from building materials, sale of property, and sale of fuel. Auditors noted that the company did not provide sufficient documentation for the audit.

In the financial year 2019, Polidano Brothers entered into an agreement with the Inland Revenue Department to repay overdue social security contributions with the government agreeing to waive some penalties for late payment. However, the company admitted to not respecting the terms of the agreement and instead discussing with the government to settle partly in-kind or introduce “set-offs against dues by Government to the Company”.

Polmesh, too, ended 2023 with a loss of close to €600,000.

Monte Kristo Vineyards Ltd received agricultural subsidies through the EU’s Common Agricultural Policy (CAP) in 2023 and 2024. The area has been subject to Planning Authority enforcement notices over illegal building on the agricultural site, which also features a concrete plant and a batching plant.

Charles Polidano’s 2009 and 2010 applications to sanction Montekristo’s family park, including an illegal zoo and an extension of its winery, in Siggiewi, were approved by the Planning Authority in July 2025 despite pending court cases concerning the site.

Official data shows that Monte Kristo Vineyards Ltd received over €36,000 in CAP subsidies in 2024, about a third of which were for environmental measures, and a further €37,000 in 2025.

In 2017, “Montekristo” (not specified, although the group contains several companies with this brand) received a €122,500 catering and ancillary services tender to service Malta’s Presidency of the Council of the European Union 2017.

This investigation was developed with the support of Journalismfund Europe.