The cost could have been recouped by the stream of tourists. Answers will be solicited from panelists representing academia, industry, government, citizen's groups, and the general audience. Our public water supplies are continually being monitored. It does not necessarily mean that there is no amount of the contaminant in the water. The exact concentration is unknown because it is under the detection limit.
Chlorine destroys the microbes responsible for disease .
The problem with additives it that there are usually side effects to them. In many cases, site characterization reports are required, including remedial investigations, impact statements, and risk assessments. Remedial investigations are required for Superfund and RCRA sites to define the contamination problems. This may be followed up by development of remedial alternatives. It is required when the project is supported with federal funds.