A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Occurrence and co‐occurrence of perchlorate and nitrate in California drinking water sources
Perchlorate, a chemical that affects the ability of the thyroid to absorb iodide, has been detected in many drinking water sources, mainly groundwaters. Perchlorate enters groundwater via permeation from surface water; other contaminants can enter groundwater in the same fashion. The purpose of this study was to determine the overall distribution of perchlorate and nitrate in California drinking water sources and the co‐occurrence (if any) of nitrate and perchlorate. The study used the California Department of Health Services Division of Drinking Water and Environmental Monitoring database of all source water monitoring results, including those for nitrate and perchlorate. Data for nitrate (1994–2003) and perchlorate (1997–2003) were queried, and results (including nondetects) were averaged. A similar query was performed for all results above the reporting limit. All sources with positive results for perchlorate were queried for nitrate results. Nitrate results collected within 180 days of a positive perchlorate result were used. Results indicated that the mean perchlorate level in California drinking water sources was 3.6 μg/L, and the mean nitrate level was 21,000 μg/L. Among sources with positive perchlorate results, the mean perchlorate result was 12 μg/L, and the mean nitrate result was 39,000 μg/L for nitrate. A weak but statistically significant correlation was found between the concentrations of perchlorate and nitrate (R2 = 0.31, p < 0.001).
Occurrence and co‐occurrence of perchlorate and nitrate in California drinking water sources
Perchlorate, a chemical that affects the ability of the thyroid to absorb iodide, has been detected in many drinking water sources, mainly groundwaters. Perchlorate enters groundwater via permeation from surface water; other contaminants can enter groundwater in the same fashion. The purpose of this study was to determine the overall distribution of perchlorate and nitrate in California drinking water sources and the co‐occurrence (if any) of nitrate and perchlorate. The study used the California Department of Health Services Division of Drinking Water and Environmental Monitoring database of all source water monitoring results, including those for nitrate and perchlorate. Data for nitrate (1994–2003) and perchlorate (1997–2003) were queried, and results (including nondetects) were averaged. A similar query was performed for all results above the reporting limit. All sources with positive results for perchlorate were queried for nitrate results. Nitrate results collected within 180 days of a positive perchlorate result were used. Results indicated that the mean perchlorate level in California drinking water sources was 3.6 μg/L, and the mean nitrate level was 21,000 μg/L. Among sources with positive perchlorate results, the mean perchlorate result was 12 μg/L, and the mean nitrate result was 39,000 μg/L for nitrate. A weak but statistically significant correlation was found between the concentrations of perchlorate and nitrate (R2 = 0.31, p < 0.001).
Occurrence and co‐occurrence of perchlorate and nitrate in California drinking water sources
Kimbrough, David Eugene (author) / Parekh, Pankaj (author)
Journal ‐ American Water Works Association ; 99 ; 126-132
2007-09-01
7 pages
Article (Journal)
Electronic Resource
English
Occurrence of perchlorate IN DRINKING WATER SOURCES
| Wiley | 2001
Occurrence of Perchlorate in drinking water sources in Korea
| Online Contents | 2009
The Occurrence of Perchlorate in Public Drinking Water Systems
| British Library Conference Proceedings | 2005
Occurrence of MTBE in drinking water sources
| Wiley | 2000