The Power of Information

National Drinking Water Database


Maysville Utilities - Osborn, MO


Serves 1,100 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
47 days
Tests ConductedNumber of individual tests done for this contaminant
139 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.255.89 ppb
570 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
2009-06-16230 ppb30120 to 320 ppb
2009-05-13180 ppb30170 to 190 ppb
2009-04-1080 ppb3070 to 90 ppb
2009-03-1920 ppb320 to 60 ppb
2009-02-1246.67 ppb310 to 120 ppb
2009-01-20453.33 ppb30430 to 490 ppb
2008-12-10470 ppb30420 to 530 ppb
2008-11-17320 ppb10320 ppb
2008-10-16493.33 ppb30470 to 530 ppb
2008-09-16570 ppb30520 to 640 ppb
2008-08-13423.33 ppb30390 to 470 ppb
2008-07-11473.33 ppb30410 to 530 ppb
2008-06-16306.67 ppb30290 to 320 ppb
2008-05-07390 ppb30220 to 540 ppb
2008-04-14303.33 ppb30160 to 450 ppb
2008-03-12386.67 ppb30220 to 470 ppb
2008-02-14350 ppb30170 to 450 ppb
2008-01-16420 ppb30350 to 460 ppb
2007-12-12246.67 ppb30190 to 340 ppb
2007-11-15393.33 ppb30130 to 920 ppb
2007-10-16566.67 ppb30510 to 600 ppb
2007-09-120 ppb330 ppb
2007-08-140 ppb330 ppb
2007-07-170 ppb330 ppb
2007-06-11356.67 ppb30330 to 400 ppb
2007-05-11343.33 ppb30280 to 420 ppb
2007-04-16190 ppb3090 to 310 ppb
2007-03-13130 ppb310 to 260 ppb
2007-02-1266.67 ppb3030 to 90 ppb
2007-01-12133.33 ppb3080 to 190 ppb
2006-12-08226.67 ppb310 to 380 ppb
2006-11-09136.67 ppb3080 to 170 ppb
2006-10-1080 ppb3060 to 100 ppb
2006-09-15110 ppb3030 to 260 ppb
2006-08-140 ppb330 ppb
2006-07-1143.33 ppb3040 to 50 ppb
2006-06-13100 ppb3050 to 130 ppb
2006-05-16163.33 ppb30100 to 200 ppb
2006-04-1130 ppb310 to 70 ppb
2006-03-10313.33 ppb30180 to 450 ppb
2006-02-23316.67 ppb30290 to 360 ppb
2006-01-23363.33 ppb30330 to 400 ppb
2005-12-12293.33 ppb30190 to 400 ppb
2005-11-21346.67 ppb30180 to 440 ppb
2005-10-21346.67 ppb30270 to 410 ppb
2005-09-07383.33 ppb30370 to 400 ppb
2005-08-22430 ppb30350 to 490 ppb