# Green dye to be added to heating networks in four Minsk districts from 16 November

- URL: https://syn.by/en/society/green-dye-added-heating-networks/
- Published: 2026-11-12T14:30:17+00:00
- Updated: 2026-11-12T14:30:17+00:00
- Section: Society
- Language: en
- RU edition: https://syn.by/ru/obshchestvo/minsk-teplovye-seti-zelenyy-krasitel.md
- BE edition: https://syn.by/hramadztva/miensk-cieplavyja-sietki-zialiony-farbavalnik.md

> Minskenergo said the dye, fluorescein, is needed to find leaks and test water heaters. People who see coloured water in their hot water supply are asked to report it to dispatchers.

![](https://syn.by/wp-content/uploads/2026/11/illustration-7079.webp)

From 16 November until the end of the heating season, the food dye fluorescein will be added to the network water in the heating networks of Minsk's Leninski, Zavodski, Savetski and Pershamaiski districts. Minskenergo gave notice of the plan on 11 November.

According to the company, in the event of a leak the water turns light green. Residents of these districts may get coloured water from the tap.

Minskenergo explained that the colouring is needed to quickly detect leaks and unauthorised use of the heat carrier, and to test the tightness of water heaters. The company also noted that the practice improves the reliability of heat supply and reduces losses.

"Unauthorised use of the heat carrier" refers in particular to draining hot water from the heating system: the colour of the water makes this noticeable.

This is not the first time the dye has been added. In November 2023, the heating networks warned of the same colouring in four districts, and in November 2025 Minskenergo again added fluorescein to the water in four districts.

"Fluorescein is absolutely safe for human health and the environment, and is approved for use by the Ministry of Health in accordance with the requirements of the sanitary and epidemiological service," Minskenergo said. According to the company, there will be no harm even if coloured water gets into the hot water supply system.

If green water appears in the hot water supply system or a green leak is visible, Minskenergo asks people to report it to the dispatch service at 298-27-27 and 298-27-37.