scholarly journals Depth of groundwater used for drinking-water supplies in the United States

2021 ◽  
Author(s):  
James R. Degnan ◽  
Leon J. Kauffman ◽  
Melinda L. Erickson ◽  
Kenneth Belitz ◽  
Paul E. Stackelberg
Keyword(s):  
United States ◽  
Drinking Water ◽  
The United States ◽  
Water Supplies

The Environmental and Hygienic Safety of Nitrilotriacetate (NTA)

1971 ◽  
Vol 6 (1) ◽  
pp. 13-37
Author(s):  
F.G. Flynn ◽  
P.H. Jones
Keyword(s):  
United States ◽  
Heavy Metals ◽  
Drinking Water ◽  
The United States ◽  
Anaerobic Conditions ◽  
Water Supplies ◽  
University Of Toronto ◽  
The University ◽  
Work Done ◽  
Aerobic Biodegradability

Abstract NTA is the prime substitute for detergent phosphates and its use in large quantities, approximately 0.5 × 106 metric tons per year in Canada and the United States, is possible. This paper is a summary of the literature and of work done at the University of Toronto regarding evaluation of the environmental and hygienic safety of NTA and NTA built detergents. A large number of topics is covered, the conclusion of each being that NTA is safe to use. Such topics include: aerobic biodegradability, toxicity, mutagenicity, carcinogenicity and nitrate contribution. Areas of doubt regarding NTA are its non-degradability under anaerobic conditions and the possibility of its delivering heavy metals into drinking water supplies.

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