The Power of Information

National Drinking Water Database


Dcwa Central Utilities - Sutherland, VA


Serves 7,431 people

Chlorite

Chlorite is a disinfection byproduct resulting from water treatment with chlorine dioxide, or from the use of chlorine dioxide as a bleaching agent for cellulose, paper pulp, flour and oils.
 
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
28 days
Tests ConductedNumber of individual tests done for this contaminant
81 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
ChloriteChlorite is a disinfection byproduct resulting from water treatment with chlorine dioxide, or from the use of chlorine dioxide as a bleaching agent for cellulose, paper pulp, flour and oils.308.3 ppb
610.33 ppb
No
800 ppb
No
1000 ppb
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 Chlorite

Health Based Limits for Chlorite

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.800 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.800 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.840 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.840 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.1000 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.1000 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-01-14232.33 ppb30105 to 345 ppb
2008-10-07117.1 ppb3044.3 to 163 ppb
2008-07-0746.87 ppb310 to 72.3 ppb
2008-04-07160 ppb30118 to 220 ppb
2008-01-07340.67 ppb30124 to 521 ppb
2006-10-11377.67 ppb30142 to 496 ppb
2006-07-1867.77 ppb310 to 136 ppb
2006-06-1469.67 ppb3017.9 to 108 ppb
2006-03-1585.43 ppb3037.3 to 116 ppb
2005-12-19391.73 ppb3055.2 to 580 ppb
2005-09-27144 ppb10144 ppb
2005-09-19220.5 ppb20106 to 335 ppb
2005-06-27241.67 ppb30132 to 299 ppb
2005-03-17392 ppb30331 to 450 ppb
2005-02-16497 ppb30456 to 546 ppb
2005-01-25610.33 ppb30343 to 751 ppb
2004-12-15549 ppb30413 to 631 ppb
2004-11-22570.67 ppb30260 to 730 ppb
2004-10-19407 ppb30278 to 490 ppb
2004-09-21426 ppb30241 to 602 ppb
2004-08-25269.67 ppb30253 to 291 ppb
2004-07-22212.33 ppb30158 to 245 ppb
2004-06-21355.93 ppb3022.8 to 825 ppb
2004-05-12189 ppb3066 to 259 ppb
2004-04-20236 ppb30223 to 260 ppb
2004-03-24456 ppb30232 to 569 ppb
2004-02-25456.33 ppb30251 to 610 ppb
2004-01-28509.67 ppb30378 to 634 ppb