AWWA JAW6555

Ductile-iron pipe employed in water distribution systems usually bears a seal coating of petroleum asphalt that is in direct contact with the water. Experimental evidence designed to simulate a "worstcase" scenario suggests that no significant contribution of polynuclear aromatic hydrocarbons to piped water should be expected from a relatively freshly seal-coated pipe. The total concentration of the six PAH examined was less than 1 ng/L, compared to the WHO recommended maximum concentration of 200 ng/L. Includes 7 references, tables, figures.

Product Details

Edition:

Vol. 74 - No. 3

Published:

03/01/1982

Number of Pages:

6

File Size:

1 file , 1.5 MB