The Power of Information

National Drinking Water Database


Hamilton Utilities - Polo, MO


Serves 1,750 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
5 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
141 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.545.18 ppb
910 ppb
Yes
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
2009-06-1586.67 ppb3050 to 160 ppb
2009-05-1150 ppb3040 to 60 ppb
2009-04-13150 ppb30110 to 200 ppb
2009-03-16160 ppb30150 to 170 ppb
2009-02-12210 ppb30180 to 230 ppb
2009-01-14160 ppb30150 to 180 ppb
2008-12-10180 ppb30130 to 240 ppb
2008-11-1896.67 ppb3070 to 140 ppb
2008-10-16123.33 ppb3070 to 190 ppb
2008-09-16110 ppb3080 to 170 ppb
2008-08-13386.67 ppb30360 to 420 ppb
2008-07-15123.33 ppb3060 to 180 ppb
2008-06-16233.33 ppb30170 to 280 ppb
2008-05-07730 ppb30660 to 850 ppb
2008-04-14706.67 ppb30680 to 730 ppb
2008-03-12836.67 ppb30740 to 890 ppb
2008-02-12750 ppb30740 to 760 ppb
2008-01-15833.33 ppb30820 to 860 ppb
2007-12-11910 ppb30880 to 970 ppb
2007-11-14740 ppb30710 to 780 ppb
2007-10-17830 ppb30810 to 870 ppb
2007-09-11793.33 ppb30780 to 810 ppb
2007-08-14710 ppb30710 ppb
2007-07-17726.67 ppb30720 to 730 ppb
2007-06-11856.67 ppb30820 to 910 ppb
2007-05-14586.67 ppb30570 to 600 ppb
2007-04-16723.33 ppb30700 to 770 ppb
2007-03-13616.67 ppb30590 to 650 ppb
2007-02-13686.67 ppb30670 to 710 ppb
2007-01-16730 ppb30720 to 740 ppb
2006-12-11616.67 ppb30590 to 640 ppb
2006-11-08670 ppb30660 to 680 ppb
2006-10-09696.67 ppb30660 to 770 ppb
2006-09-13526.67 ppb30510 to 540 ppb
2006-08-14670 ppb30610 to 730 ppb
2006-07-11693.33 ppb30640 to 770 ppb
2006-06-14570 ppb30540 to 630 ppb
2006-05-16656.67 ppb30550 to 800 ppb
2006-04-11663.33 ppb30630 to 710 ppb
2006-03-13603.33 ppb30570 to 640 ppb
2006-02-22623.33 ppb30620 to 630 ppb
2006-01-23553.33 ppb30520 to 590 ppb
2005-12-12666.67 ppb30620 to 730 ppb
2005-11-21610 ppb30590 to 620 ppb
2005-10-20640 ppb30560 to 740 ppb
2005-09-07560 ppb30500 to 620 ppb
2005-08-22766.67 ppb30740 to 800 ppb