The Power of Information

National Drinking Water Database


Greenwood Waterworks Utilities - Fort Smith, AR


Serves 8,290 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
66 days
Tests ConductedNumber of individual tests done for this contaminant
193 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.227.37 ppb
774.33 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
2009-07-01218.33 ppb30213 to 222 ppb
2009-06-02477.67 ppb30441 to 500 ppb
2009-05-05556.33 ppb30530 to 598 ppb
2009-04-01478 ppb30417 to 526 ppb
2009-03-03592 ppb30572 to 606 ppb
2009-02-03465 ppb30392 to 609 ppb
2009-01-05774.33 ppb30694 to 863 ppb
2008-12-01571.67 ppb30544 to 626 ppb
2008-11-04473.67 ppb30437 to 524 ppb
2008-10-06536.67 ppb30323 to 922 ppb
2008-09-02511 ppb30474 to 583 ppb
2008-08-05457 ppb30418 to 531 ppb
2008-07-01595.33 ppb30545 to 629 ppb
2008-06-02442 ppb30280 to 572 ppb
2008-05-05595.33 ppb30549 to 633 ppb
2008-04-02601 ppb30499 to 681 ppb
2008-03-04538 ppb30477 to 611 ppb
2008-02-05592.67 ppb30506 to 636 ppb
2008-01-07658 ppb30628 to 692 ppb
2007-12-04666 ppb30514 to 763 ppb
2007-11-05451.67 ppb30398 to 532 ppb
2007-10-01349.67 ppb30254 to 521 ppb
2007-09-06400 ppb30262 to 526 ppb
2007-08-07368 ppb20315 to 421 ppb
2007-07-02438 ppb30335 to 586 ppb
2007-06-06408 ppb20250 to 566 ppb
2007-05-01281 ppb10281 ppb
2007-04-04159.2 ppb3086.6 to 256 ppb
2007-02-0559.7 ppb2042.9 to 76.5 ppb
2007-01-0367.57 ppb3025.9 to 101 ppb
2006-09-0566.87 ppb3020.1 to 104 ppb
2006-08-0199.33 ppb310 to 166 ppb
2006-07-05218.67 ppb30200 to 228 ppb
2006-06-0761.93 ppb3027.9 to 87.6 ppb
2006-05-01209.57 ppb3036.7 to 376 ppb
2006-04-05133.67 ppb30119 to 148 ppb
2006-03-070 ppb330 ppb
2006-02-070 ppb330 ppb
2006-01-2573.13 ppb310 to 156 ppb
2006-01-18109.33 ppb30108 to 111 ppb
2006-01-120 ppb330 ppb
2006-01-03224.33 ppb30104 to 387 ppb
2005-12-060 ppb330 ppb
2005-11-010 ppb330 ppb
2005-10-050 ppb330 ppb
2005-09-070 ppb330 ppb
2005-08-010 ppb330 ppb
2005-07-060 ppb330 ppb
2005-06-010 ppb330 ppb
2005-05-030 ppb330 ppb
2005-04-040 ppb330 ppb
2005-03-030 ppb330 ppb
2005-02-010 ppb330 ppb
2005-01-250 ppb330 ppb
2004-12-010 ppb330 ppb
2004-11-030 ppb330 ppb
2004-10-060 ppb330 ppb
2004-09-010 ppb330 ppb
2004-08-030 ppb330 ppb
2004-07-070 ppb330 ppb
2004-06-020 ppb330 ppb
2004-05-040 ppb330 ppb
2004-04-0627.07 ppb320 to 81.2 ppb
2004-03-030 ppb330 ppb
2004-02-040 ppb330 ppb
2004-01-060 ppb330 ppb