The Power of Information

National Drinking Water Database


Puddledock Road Utilities - Disputanta, VA


Serves 6,525 people

Chlorate

Chlorate is a disinfection byproduct (unregulated chlorine dioxide byproduct), an herbicide and a pollutant from explosives.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
33 days
Tests ConductedNumber of individual tests done for this contaminant
102 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
ChlorateChlorate is a disinfection byproduct (unregulated chlorine dioxide byproduct), an herbicide and a pollutant from explosives.159.27 ppb
251.5 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for Chlorate

Health Based Limits for Chlorate

There are no health based standards that EWG is using for this chemical

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-04-06115.73 ppb3089.2 to 146 ppb
2009-01-08108.6 ppb3080.8 to 134 ppb
2008-10-06175.03 ppb3098.1 to 224 ppb
2008-07-0297.7 ppb3092.6 to 105 ppb
2008-04-0398.57 ppb3084 to 116 ppb
2008-01-07158.33 ppb30133 to 175 ppb
2006-10-06185 ppb30175 to 199 ppb
2006-07-06141.67 ppb30126 to 151 ppb
2006-04-03132.33 ppb30126 to 139 ppb
2006-01-03142 ppb20111 to 173 ppb
2005-12-08155.67 ppb30145 to 176 ppb
2005-11-22175.33 ppb30157 to 195 ppb
2005-10-07162 ppb30147 to 171 ppb
2005-09-06162.67 ppb30156 to 171 ppb
2005-08-09145 ppb30130 to 174 ppb
2005-07-14205.33 ppb30179 to 226 ppb
2005-06-20183.67 ppb30178 to 192 ppb
2005-05-19147.67 ppb30130 to 165 ppb
2005-04-06181 ppb30151 to 224 ppb
2005-03-08223.67 ppb30172 to 254 ppb
2005-02-09237.33 ppb30209 to 258 ppb
2005-01-28223 ppb30177 to 272 ppb
2005-01-03125 ppb10125 ppb
2004-12-07191 ppb30139 to 223 ppb
2004-11-02196.33 ppb30175 to 221 ppb
2004-10-15168 ppb30153 to 197 ppb
2004-09-17161.67 ppb30142 to 181 ppb
2004-08-17146.33 ppb30136 to 159 ppb
2004-07-29140.67 ppb30133 to 145 ppb
2004-06-22251.5 ppb3099.5 to 534 ppb
2004-05-1776.6 ppb310 to 146 ppb
2004-04-2874.67 ppb310 to 157 ppb
2004-02-17166.92 ppb9087.3 to 214 ppb