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[1] [2] An MCL is the legal threshold limit on the amount of a substance that is allowed in public water systems under the Safe Drinking Water Act (SDWA). The limit is usually expressed as a concentration in milligrams or micrograms per liter of water.
Drinking water or potable water is water that is safe for ingestion, either when drunk directly in liquid form or consumed indirectly through food preparation. It is often (but not always) supplied through taps, in which case it is also called tap water.
Like water, liquid ammonia undergoes molecular autoionisation to form its acid and base conjugates: 2 NH 3 ⇌ NH + 4 + NH − 2. Ammonia often functions as a weak base, so it has some buffering ability. Shifts in pH will cause more or fewer ammonium cations (NH + 4) and amide anions (NH − 2) to be present in solution. At standard pressure ...
*Maximum Contaminant Level (MCL) - The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration.
Ammonia may be present in drinking-water as a result of disinfection with chloramines. The presence of ammonia at higher than geogenic levels is an important indicator of faecal
The EPA has established a maximum contaminant level (MCL) for ammonia in drinking water of 0.5 mg/L [2]. This level is based on the potential health effects of long-term exposure to high levels of ammonia and is considered to be protective of human health.
18 Μαΐ 2022 · Chemical fact sheets: Ammonia. 18 May 2022. Technical document. Download (77 kB) Overview. Chapter 12 of the Guidelines for drinking-water Quality (GDWQ) includes fact sheets on chemical contaminants, based on comprehensive review documents published by WHO.
