https://www.epa.gov/wqc/aquatic-life-criteria-ammonia

Mar 13, 2019 ... EPA has published final national recommended water quality criteria for the protection of aquatic life from the toxic effects of ammonia in ...

http://www.water-research.net/Watershed/ammonia.htm

Recent Sponsors for this Page Water Testing Kits - Science Fair Projects/ Stream Monitoring Are You Using Our Surface Water Quality Indicate Calculator?

https://pubs.rsc.org/en/content/articlehtml/2017/em/c6em00531d

Jan 30, 2017 ... A high level of ammonium in surface water and shallow groundwater is typically attributed to anthropogenic sources such as sewage from ...

http://www.saskh20.ca/DWBinder/epb431.pdf

Natural ammonia levels in groundwater and surface water are usually below 0.2 mg/L, but many regions throughout the world have high levels of naturally.

https://www.wqa.org/Portals/0/Technical/Technical%20Fact%20Sheets/2014_Ammonia.pdf

It also may find its way to ground and surface waters through discharge of industrial process wastes containing ammonia and fertilizers. Ammonia has been .

https://crops.extension.iastate.edu/cropnews/2008/04/surface-waters-ammonium-not-ammonia-%E2%80%93-part-1

Apr 21, 2008 ... The article (High ammonia levels threaten D.M.'s water, April 6, 2008) featured information about “ammonia” levels in certain Iowa surface ...

https://www.who.int/water_sanitation_health/dwq/ammonia.pdf

The threshold odour concentration of ammonia in water is approximately 1.5 mg/ litre. [Source: ... Surface waters may contain up to 12 mg/litre (1). Ammonia may ...

https://www.who.int/water_sanitation_health/dwq/chemicals/ammoniasum.pdf

to 3mg/litre. Intensive rearing of farm animals can give rise to much higher levels in surface water. Ammonia contamination can also arise from cement mortar ...

https://www.waterboards.ca.gov/water_issues/programs/swamp/docs/cwt/guidance/3310en.pdf

Ammonia is a nutrient that contains nitrogen and hydrogen. Its chemical formula is NH3 ... Nitrate predominates in unpolluted waters. Nitrogen can be an ...

http://www.environment.gov.au/system/files/resources/eac1374f-538b-488b-bc70-7b23c83ad75c/files/ammonia-surface-water-rehab-standard-ranger-uranium-mine.pdf

Sep 1, 2018 ... September 2018. 1. Ammonia in Surface Water —. Rehabilitation Standard for the. Ranger uranium mine. Water and sediment theme. Preface.