# Brussels cumulative limit, publicly accessible indoor areas

> f/4012.19 W/m² indoors — 0.2243 W/m² (9.19 V/m) at 900 MHz, the stricter of the two Brussels tiers, applying to homes, hotels, schools, crèches, hospitals and care homes.

- Canonical URL: https://emfbase.com/limits/brussels-indoor-cumulative-limit
- Collection: Exposure limits
- Record id: `limits:brussels-indoor-cumulative`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/limits/brussels-indoor-cumulative-limit

## Key values

- **Limit value:** 99,700–499,200 µW/m² — Regulatory value — legally enforceable — The range is the band edges: 0.0994 W/m² at 400 MHz to 0.4992 W/m² at 2000 MHz; at 900 MHz the ordinance gives 0.2243 W/m² = 9.19 V/m. If windows or doors to the outside are open, the outdoor values apply indoors instead. Antennas radiating between 20 and 300 GHz are prohibited unless the Government authorises them, excluding point-to-point links. [brussels-ordinance-2007]
- **Quantity:** power density
- **Frequency band:** 400–2000 MHz, indoors
- **Population:** general public
- **Set by:** Brussels-Capital non-ionising radiation ordinance (Ordinance of 1 March 2007, as amended 2 March 2023, in force 1 May 2023)
- **Kind:** Regulatory — legally enforceable
- **Frequency-dependent formula:** f/4012.19 W/m² (f in MHz)

## Related records

- [Brussels-Capital non-ionising radiation ordinance](https://emfbase.com/standards/brussels-non-ionising-radiation-ordinance): Brussels sets its own cumulative power-density limits for fixed transmitters — 0.5635 W/m² outdoors and 0.2243 W/m² indoors at 900 MHz — and bans public mobile antennas from 20 to 300 GHz.
- [Brussels cumulative limit, publicly accessible outdoor areas](https://emfbase.com/limits/brussels-outdoor-cumulative-limit): f/1597.28 W/m² summed over all fixed transmitters — 0.5635 W/m² (14.57 V/m) at 900 MHz, about a tenth of the EU reference level in power terms.

## Sources

- `brussels-ordinance-2007` Région de Bruxelles-Capitale, Moniteur belge / Justel (2007). *Ordonnance du 1er mars 2007 relative à la protection de l'environnement contre les éventuels effets nocifs et nuisances provoqués par les radiations non ionisantes (texte coordonné, art. 3)*. https://www.ejustice.just.fgov.be/eli/ordonnance/2007/03/01/2007031104/justel — regulation, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.