Metir PLC (AIM:MET), the water and environmental monitoring group, has received written confirmation from Qatar's state utility that its water toxicity monitoring project is intended to run for at least 10 years.
The letter, from regional partner Avanceon, follows a stakeholder meeting on 20 July involving Qatar General Electricity & Water Corporation, known as Kahramaa.
It also sets out an intention to open a tender process for a second phase covering a further 17 units, taking the total installed base to 44.
The company's Modern Water division is the sole supplier of the technology, which screens water supplies continuously for thousands of potential toxins and issues alerts within minutes.
The confirmation resets the final delivery milestone for the first phase to October 2026, releasing an outstanding payment of roughly £161,000 plus a further performance payment of about £44,000.
At that point the contract moves into a maintenance phase, triggering monthly consumables revenues across all 27 installed units.
Metir expects those recurring revenues to run at around £30,000 a month at the current installed base, rising above £50,000 a month if the second phase proceeds.
The reagent used in the units is replaced every 30 days.
Handover has been delayed by hostilities in the region, which have restricted shipments of biological reagents into Qatar and limited the ability of Modern Water staff to travel to Doha.
Technical problems flagged in March have since been reviewed, and the company said no material faults were found with the deployed instruments.
The difficulties instead related to how the reagent was stored and handled in high local temperatures, with some batches falling short of their monthly working cycle.
A specialist biochemist will be sent to Doha to oversee validation and the final handover.
Kahramaa has also backed plans for a local laboratory in Doha to produce the reagent, cutting shipping risk.
Chief executive Bob Moore said the deployment would serve as a reference installation for wider adoption across the Middle East.
