Ammonium

Definition: Ammonium refers to the ammonium ions (NH4+) on the one hand and the gas ammonia (NH3) on the other. It is soluble in water and is used in various contexts.

Chemical properties: Ammonium ions (NH4+) are positively charged molecules that can dissolve well in water. They can occur in combinations with other chemical substances. Ammonia (NH3) is a colorless gas with a characteristic odor. It is highly volatile and can also be dissolved in water.

Occurrence in water: Ammonium is often used as an indicator of fecal presence in water because it is a component of urine. The Drinking Water Ordinance sets a limit value for ammonium, which in Germany is 0.5 mg/l. Exceeding this value may indicate possible contamination with wastewater and requires further investigation and action.

Health Effects: Ammonium itself is not toxic to humans and does not normally pose a direct risk. However, there are other factors such as accompanying substances or contaminants that can have potential health effects. Therefore, it is important to monitor overall water quality and take appropriate measures to ensure the safety of drinking water.

In summary, ammonium in itself does not pose a direct threat to human health, but serves primarily as an indicator of fecal presence and possible contaminants in water. It is important to comply with the limit according to relevant regulations and to monitor water quality regularly to minimize potential risks.