Electromagnetic Radiation Around the World: Standards, National Limits and Differences in Approach
The permitted levels of electromagnetic radiation (EMR) vary significantly from country to country, as each government strikes a different balance between technological development and the precautionary principle.
As of 2026, most countries follow the guidelines of ICNIRP (International Commission on Non-Ionising Radiation Protection). However, there are also countries that have adopted significantly stricter national limits.
The main indicators used when measuring electromagnetic exposure are:
- Electric field strength (V/m)
- Magnetic flux density (μT)
- Power density (W/m² or μW/cm²)
1. International Standards (ICNIRP)
These limits are considered “safe” by the World Health Organization (WHO) and the European Union. They are based primarily on the thermal effects of electromagnetic radiation on the human body.
- For frequencies used by 4G and 5G networks (general public exposure):
Approximately 41-61 V/m (or 4.5-10 W/m², depending on the specific frequency). - For low-frequency fields (such as power grids at 50 Hz):
- Electric field: 5 kV/m
- Magnetic field: 200 μT (according to updated guidelines)
2. Comparison by Country (Permitted Levels)
Countries generally fall into two main groups:
- those that follow ICNIRP guidelines, and
- those that apply stricter national limits.
Examples by region
| Country / Region | Power Density (μW/cm²) | Notes |
|---|---|---|
| USA, Canada, Japan | ~600-1000 | Follow the more liberal ICNIRP/IEEE standards |
| EU (Germany, France) | 450-900 | Apply EU Recommendation 1999/519/EC based on ICNIRP |
| Poland, Italy, Belgium | 10-100 | Limits vary by region (Brussels has particularly low limits) |
| Bulgaria | 10 | Among the strictest RF limits worldwide (0.3-30 GHz) |
| Switzerland | ~4-9.5 | Uses the concept of “sensitive zones” (schools, hospitals) |
| Russia | 10 | Historically strict sanitary standards |
3. Recommended Levels (BioInitiative Report)
In addition to official national limits, independent scientific reviews such as the BioInitiative Report recommend significantly lower exposure levels in order to avoid possible non-thermal biological effects.
Recommended values include:
- For homes: below 0.1 μW/cm² (approximately 0.6 V/m)
- Magnetic fields: below 0.2 μT for long-term exposure (linked to precautionary approaches regarding childhood leukaemia)
4. The Situation in Bulgaria
In Bulgaria, the limits are defined in Ordinance No. 9 from 1991.
For residential areas, the maximum permissible level for microwave radiation from base stations is 10 μW/cm².
5. Why Do Different Countries Adopt Different Limits?
The differences largely come down to different philosophies of protection.
The Western model (ICNIRP) focuses mainly on thermal effects. If the radiation does not heat body tissue, it is generally considered safe.
The Eastern model (for example Russia and China) assumes that even very weak signals may influence the nervous system, sleep patterns and cellular processes during long-term exposure over many years.
An interesting example: in China, when antennas are installed on rooftops, physical barriers are sometimes added or transmission power is limited in certain sectors to prevent direct exposure to nearby residential windows above specific thresholds.
