With less than a year remaining until water systems are required to meet the lowered
arsenic maximum contaminant limit (MCL) of 10 µg/L, a number of utilities are currently deciding how to meet this
requirement. Luckily, several technologies are capable of treating arsenic to low levels.
Yet the performance of all of these technologies is influenced by co-occurring
contaminants. While several attempts have been made to nationally quantify the levels at
which various contaminants co-occur with arsenic (USEPA 1999), these efforts have
been limited in scope and not focused on parameters which are known to impact
treatment performance. This paper reports on the results of an American Water
Works Association Research Foundation (AwwaRF) sponsored study which determined
national arsenic occurrence and evaluated the composition of the water quality matrix in
which arsenic occurs. Using this data, the range of water quality matrices which should
be used to evaluate arsenic treatment technologies has been developed and the suitability
of the existing National Science Foundation (NSF) challenge water has been evaluated.
The objective of the analysis was to develop a first order estimate of arsenic occurrence
in groundwater and determine the co-occurrence of contaminants which can influence the
performance of arsenic treatment systems. Includes 5 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 1.1 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 06/17/2005 |
