The Power of Information

National Drinking Water Database


City of Modesto Utilities - Modesto, CA


Serves 190,106 people

Nitrite

Nitrite is a chemical that enters water from fertilizer runoff, leaching septic tanks, and erosion of natural deposits.
 
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
838 days
Tests ConductedNumber of individual tests done for this contaminant
6,661 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
NitriteNitrite is a chemical that enters water from fertilizer runoff, leaching septic tanks, and erosion of natural deposits.<0.01 ppm
<0.01 ppm
No
1 ppm
No
1 ppm
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 Nitrite

Health Based Limits for Nitrite

StandardDescriptionLevel
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.1 ppm
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.1 ppm
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.1 ppm
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.1 ppm
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.1 ppm

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2008-10-290 ppm880 ppm
2008-10-220 ppm11110 ppm
2008-10-150 ppm11110 ppm
2008-10-080 ppm11110 ppm
2008-10-070 ppm110 ppm
2008-10-010 ppm13130 ppm
2008-09-240 ppm11110 ppm
2008-09-170 ppm12120 ppm
2008-09-030 ppm18180 ppm
2008-06-250 ppm110 ppm
2008-06-240 ppm11110 ppm
2008-06-230 ppm330 ppm
2008-06-180 ppm330 ppm
2008-06-170 ppm10100 ppm
2008-06-160 ppm220 ppm
2008-06-120 ppm660 ppm
2008-06-110 ppm110 ppm
2008-06-100 ppm13130 ppm
2008-06-050 ppm110 ppm
2008-06-040 ppm440 ppm
2008-06-030 ppm10100 ppm
2008-05-280 ppm220 ppm
2008-05-270 ppm770 ppm
2008-05-23<0.01 ppm21< .01 to 8.8E-5 ppm
2008-05-22<0.01 ppm21< .01 to 0.000131 ppm
2008-05-21<0.01 ppm43< .01 to 0.000112 ppm
2008-05-20<0.01 ppm109< .01 to 9.7E-5 ppm
2008-05-19<0.01 ppm21< .01 to 0.000116 ppm
2008-05-18<0.01 ppm21< .01 to 8.2E-5 ppm
2008-05-17<0.01 ppm20< .01 to 9.3E-5 ppm
2008-05-16<0.01 ppm21< .01 to 5.3E-5 ppm
2008-05-15<0.01 ppm21< .01 to 6.4E-5 ppm
2008-05-140 ppm330 ppm
2008-05-130 ppm14140 ppm
2008-05-12<0.01 ppm21< .01 to 4.4E-5 ppm
2008-05-110 ppm220 ppm
2008-05-10<0.01 ppm21< .01 to 5.0E-5 ppm
2008-05-09<0.01 ppm21< .01 to 4.7E-5 ppm
2008-05-080 ppm220 ppm
2008-05-07<0.01 ppm54< .01 to 5.1E-5 ppm
2008-05-06<0.01 ppm1211< .01 to 5.0E-5 ppm
2008-05-05<0.01 ppm32< .01 to 3.6E-5 ppm
2008-05-040 ppm220 ppm
2008-05-030 ppm220 ppm
2008-05-020 ppm220 ppm
2008-05-010 ppm220 ppm
2008-04-300 ppm330 ppm
2008-04-290 ppm10100 ppm
2008-04-280 ppm330 ppm
2008-04-270 ppm220 ppm
2008-04-260 ppm220 ppm
2008-04-250 ppm220 ppm
2008-04-240 ppm220 ppm
2008-04-230 ppm440 ppm
2008-04-220 ppm12120 ppm
2008-04-210 ppm220 ppm
2008-04-170 ppm110 ppm
2008-04-160 ppm440 ppm
2008-04-150 ppm12120 ppm
2008-04-140 ppm440 ppm
2008-04-090 ppm220 ppm
2008-04-080 ppm990 ppm
2008-04-070 ppm110 ppm
2008-04-020 ppm110 ppm
2008-04-010 ppm660 ppm
2008-03-270 ppm880 ppm
2008-03-250 ppm110 ppm
2008-03-240 ppm110 ppm
2008-03-210 ppm110 ppm
2008-03-190 ppm330 ppm
2008-03-180 ppm660 ppm
2008-03-170 ppm220 ppm
2008-03-120 ppm110 ppm
2008-03-110 ppm880 ppm
2008-03-100 ppm110 ppm
2008-03-050 ppm330 ppm
2008-03-040 ppm990 ppm
2008-03-030 ppm110 ppm
2008-02-270 ppm220 ppm
2008-02-260 ppm330 ppm
2008-02-250 ppm440 ppm
2008-02-200 ppm330 ppm
2008-02-190 ppm11110 ppm
2008-02-14<0.01 ppm10< .01 to 5.1E-5 ppm
2008-02-130 ppm220 ppm
2008-02-120 ppm880 ppm
2008-02-110 ppm110 ppm
2008-02-070 ppm220 ppm
2008-02-050 ppm770 ppm
2008-02-040 ppm330 ppm
2008-01-300 ppm110 ppm
2008-01-290 ppm330 ppm
2008-01-280 ppm110 ppm
2008-01-230 ppm110 ppm
2008-01-220 ppm440 ppm
2008-01-170 ppm110 ppm
2008-01-150 ppm550 ppm
2008-01-090 ppm220 ppm
2008-01-070 ppm660 ppm
2008-01-020 ppm330 ppm
2007-12-260 ppm440 ppm
2007-12-240 ppm110 ppm
2007-12-190 ppm110 ppm
2007-12-180 ppm220 ppm
2007-12-170 ppm440 ppm
2007-12-120 ppm110 ppm
2007-12-110 ppm550 ppm
2007-12-100 ppm220 ppm
2007-12-070 ppm220 ppm
2007-12-060 ppm220 ppm
2007-12-050 ppm220 ppm
2007-12-04<0.01 ppm87< .01 to 3.2E-5 ppm
2007-12-03<0.01 ppm21< .01 to 9.7E-5 ppm
2007-11-300 ppm220 ppm
2007-11-29<0.01 ppm21< .01 to 4.0E-5 ppm
2007-11-280 ppm110 ppm
2007-11-270 ppm550 ppm
2007-11-260 ppm110 ppm
2007-11-200 ppm770 ppm
2007-11-19<0.01 ppm32< .01 to 0.000424 ppm
2007-11-180 ppm220 ppm
2007-11-170 ppm220 ppm
2007-11-16<0.01 ppm1110< .01 to 9.8E-5 ppm
2007-11-150 ppm14140 ppm
2007-11-140 ppm14140 ppm
2007-11-130 ppm20200 ppm
2007-11-120 ppm13130 ppm
2007-11-110 ppm13130 ppm
2007-11-100 ppm13130 ppm
2007-11-090 ppm14140 ppm
2007-11-080 ppm13130 ppm
2007-11-070 ppm15150 ppm
2007-11-060 ppm19190 ppm
2007-11-050 ppm11110 ppm
2007-11-040 ppm10100 ppm
2007-11-030 ppm11110 ppm
2007-11-020 ppm12120 ppm
2007-11-010 ppm10100 ppm
2007-10-310 ppm10100 ppm
2007-10-300 ppm13130 ppm
2007-10-290 ppm10100 ppm
2007-10-280 ppm10100 ppm
2007-10-270 ppm10100 ppm
2007-10-260 ppm10100 ppm
2007-10-250 ppm10100 ppm
2007-10-24<0.01 ppm107< .01 to 6.1E-5 ppm
2007-10-230 ppm14140 ppm
2007-10-220 ppm11110 ppm
2007-10-210 ppm10100 ppm
2007-10-200 ppm10100 ppm
2007-10-190 ppm10100 ppm
2007-10-180 ppm10100 ppm
2007-10-170 ppm12120 ppm
2007-10-160 ppm17170 ppm
2007-10-150 ppm13130 ppm
2007-10-140 ppm12120 ppm
2007-10-130 ppm12120 ppm
2007-10-120 ppm12120 ppm
2007-10-110 ppm12120 ppm
2007-10-100 ppm14140 ppm
2007-10-090 ppm17170 ppm
2007-10-080 ppm12120 ppm
2007-10-070 ppm12120 ppm
2007-10-060 ppm12120 ppm
2007-10-050 ppm12120 ppm
2007-10-040 ppm12120 ppm
2007-10-030 ppm12120 ppm
2007-10-020 ppm18180 ppm
2007-10-010 ppm12120 ppm
2007-09-300 ppm12120 ppm
2007-09-290 ppm12120 ppm
2007-09-280 ppm12120 ppm
2007-09-270 ppm12120 ppm
2007-09-260 ppm12120 ppm
2007-09-250 ppm15150 ppm
2007-09-240 ppm11110 ppm
2007-09-230 ppm10100 ppm
2007-09-220 ppm12120 ppm
2007-09-210 ppm12120 ppm
2007-09-200 ppm12120 ppm
2007-09-190 ppm13130 ppm
2007-09-180 ppm17170 ppm
2007-09-17<0.01 ppm129< .01 to 7.0E-5 ppm
2007-09-160 ppm12120 ppm
2007-09-150 ppm12120 ppm
2007-09-140 ppm12120 ppm
2007-09-130 ppm12120 ppm
2007-09-120 ppm12120 ppm
2007-09-110 ppm16160 ppm
2007-09-100 ppm12120 ppm
2007-09-090 ppm12120 ppm
2007-09-080 ppm12120 ppm
2007-09-070 ppm12120 ppm
2007-09-060 ppm12120 ppm
2007-09-050 ppm12120 ppm
2007-09-040 ppm19190 ppm
2007-09-030 ppm12120 ppm
2007-09-020 ppm12120 ppm
2007-09-010 ppm12120 ppm
2007-08-310 ppm10100 ppm
2007-08-300 ppm13130 ppm
2007-08-29<0.01 ppm109< .01 to 2.0E-5 ppm
2007-08-28<0.01 ppm1614< .01 to 6.5E-5 ppm
2007-08-270 ppm11110 ppm
2007-08-260 ppm10100 ppm
2007-08-250 ppm10100 ppm
2007-08-24<0.01 ppm109< .01 to 2.2E-5 ppm
2007-08-230 ppm12120 ppm
2007-08-220 ppm12120 ppm
2007-08-210 ppm19190 ppm
2007-08-200 ppm12120 ppm
2007-08-190 ppm12120 ppm
2007-08-180 ppm12120 ppm
2007-08-170 ppm12120 ppm
2007-08-160 ppm13130 ppm
2007-08-150 ppm13130 ppm
2007-08-140 ppm17170 ppm
2007-08-130 ppm12120 ppm
2007-08-12<0.01 ppm1211< .01 to 4.0E-5 ppm
2007-08-110 ppm12120 ppm
2007-08-100 ppm12120 ppm
2007-08-090 ppm12120 ppm
2007-08-080 ppm14140 ppm
2007-08-070 ppm16160 ppm
2007-08-060 ppm12120 ppm
2007-08-050 ppm12120 ppm
2007-08-040 ppm12120 ppm
2007-08-030 ppm12120 ppm
2007-08-020 ppm12120 ppm
2007-08-01<0.01 ppm1413< .01 to 0.000325 ppm
2007-07-310 ppm17170 ppm
2007-07-300 ppm14140 ppm
2007-07-290 ppm14140 ppm
2007-07-280 ppm14140 ppm
2007-07-270 ppm15150 ppm
2007-07-260 ppm14140 ppm
2007-07-250 ppm14140 ppm
2007-07-240 ppm18180 ppm
2007-07-230 ppm15150 ppm
2007-07-220 ppm14140 ppm
2007-07-210 ppm14140 ppm
2007-07-200 ppm14140 ppm
2007-07-190 ppm16160 ppm
2007-07-180 ppm15150 ppm
2007-07-17<0.01 ppm1917< .01 to 0.000648 ppm
2007-07-160 ppm12120 ppm
2007-07-150 ppm12120 ppm
2007-07-140 ppm12120 ppm
2007-07-130 ppm12120 ppm
2007-07-12<0.01 ppm1211< .01 to 0.00158 ppm
2007-07-110 ppm17170 ppm
2007-07-10<0.01 ppm2119< .01 to 4.2E-5 ppm
2007-07-090 ppm16160 ppm
2007-07-08<0.01 ppm1613< .01 to 0.000122 ppm
2007-07-07<0.01 ppm1614< .01 to 0.0001 ppm
2007-07-06<0.01 ppm1614< .01 to 0.000459 ppm
2007-07-050 ppm16160 ppm
2007-07-04<0.01 ppm1615< .01 to 6.4E-5 ppm
2007-07-03<0.01 ppm2221< .01 to 8.5E-5 ppm
2007-07-020 ppm16160 ppm
2007-07-010 ppm16160 ppm
2007-06-300 ppm16160 ppm
2007-06-290 ppm16160 ppm
2007-06-28<0.01 ppm149< .01 to 2.4E-5 ppm
2007-06-270 ppm15150 ppm
2007-06-260 ppm19190 ppm
2007-06-250 ppm15150 ppm
2007-06-240 ppm14140 ppm
2007-06-230 ppm14140 ppm
2007-06-22<0.01 ppm1514< .01 to 0.000137 ppm
2007-06-210 ppm14140 ppm
2007-06-200 ppm16160 ppm
2007-06-190 ppm20200 ppm
2007-06-180 ppm15150 ppm
2007-06-170 ppm14140 ppm
2007-06-160 ppm14140 ppm
2007-06-150 ppm14140 ppm
2007-06-140 ppm14140 ppm
2007-06-130 ppm16160 ppm
2007-06-120 ppm30300 ppm
2007-06-11<0.01 ppm1413< .01 to 0.00156 ppm
2007-06-100 ppm14140 ppm
2007-06-090 ppm14140 ppm
2007-06-08<0.01 ppm1714< .01 to 0.00015 ppm
2007-06-070 ppm17170 ppm
2007-06-060 ppm14140 ppm
2007-06-050 ppm19190 ppm
2007-06-040 ppm14140 ppm
2007-06-030 ppm14140 ppm
2007-06-020 ppm14140 ppm
2007-06-010 ppm14140 ppm
2007-05-31<0.01 ppm1413< .01 to 6.8E-5 ppm
2007-05-300 ppm14140 ppm
2007-05-290 ppm17170 ppm
2007-05-280 ppm12120 ppm
2007-05-27<0.01 ppm1211< .01 to 0.000101 ppm
2007-05-260 ppm14140 ppm
2007-05-250 ppm14140 ppm
2007-05-24<0.01 ppm1512< .01 to 0.000138 ppm
2007-05-23<0.01 ppm1412< .01 to 0.000211 ppm
2007-05-220 ppm18180 ppm
2007-05-210 ppm14140 ppm
2007-05-200 ppm14140 ppm
2007-05-19<0.01 ppm1413< .01 to 3.1E-5 ppm
2007-05-18<0.01 ppm1412< .01 to 0.000448 ppm
2007-05-170 ppm14140 ppm
2007-05-16<0.01 ppm1514< .01 to 2.0E-5 ppm
2007-05-150 ppm20200 ppm
2007-05-14<0.01 ppm1514< .01 to 6.9E-5 ppm
2007-05-13<0.01 ppm1211< .01 to 4.0E-5 ppm
2007-05-12<0.01 ppm1211< .01 to 2.7E-5 ppm
2007-05-11<0.01 ppm1413< .01 to 0.000172 ppm
2007-05-10<0.01 ppm1411< .01 to 0.000217 ppm
2007-05-09<0.01 ppm163< .01 to 3.0E-5 ppm
2007-05-080 ppm19190 ppm
2007-05-070 ppm14140 ppm
2007-05-060 ppm14140 ppm
2007-05-050 ppm14140 ppm
2007-05-04<0.01 ppm1413< .01 to 0.000183 ppm
2007-05-03<0.01 ppm1413< .01 to 0.000141 ppm
2007-05-02<0.01 ppm148< .01 to 0.000161 ppm
2007-05-010 ppm19190 ppm
2007-04-30<0.01 ppm149< .01 to 9.0E-5 ppm
2007-04-250 ppm330 ppm
2007-04-240 ppm13130 ppm
2007-04-200 ppm220 ppm
2007-04-19<0.01 ppm43< .01 to 0.000322 ppm
2007-04-180 ppm220 ppm
2007-04-17<0.01 ppm1412< .01 to 3.3E-5 ppm
2007-04-160 ppm330 ppm
2007-04-130 ppm220 ppm
2007-04-110 ppm110 ppm
2007-04-100 ppm13130 ppm
2007-04-040 ppm550 ppm
2007-04-03<0.01 ppm1411< .01 to 3.7E-5 ppm
2007-04-020 ppm110 ppm
2007-03-30<0.01 ppm21< .01 to 2.4E-5 ppm
2007-03-280 ppm770 ppm
2007-03-270 ppm440 ppm
2007-03-220 ppm110 ppm
2007-03-210 ppm550 ppm
2007-03-20<0.01 ppm65< .01 to 2.4E-5 ppm
2007-03-190 ppm220 ppm
2007-03-15<0.01 ppm43< .01 to 6.9E-5 ppm
2007-03-14<0.01 ppm76< .01 to 2.5E-5 ppm
2007-03-130 ppm990 ppm
2007-03-070 ppm10100 ppm
2007-03-06<0.01 ppm93< .01 to 9.8E-5 ppm
2007-02-280 ppm110 ppm
2007-02-220 ppm220 ppm
2007-02-21<0.01 ppm87< .01 to 8.4E-5 ppm
2007-02-200 ppm10100 ppm
2007-02-150 ppm110 ppm
2007-02-140 ppm10100 ppm
2007-02-13<0.01 ppm117< .01 to 0.000109 ppm
2007-02-070 ppm11110 ppm
2007-02-06<0.01 ppm107< .01 to 4.5E-5 ppm
2007-01-310 ppm220 ppm
2007-01-30<0.01 ppm65< .01 to 4.2E-5 ppm
2007-01-240 ppm660 ppm
2007-01-23<0.01 ppm54< .01 to 4.9E-5 ppm
2007-01-17<0.01 ppm1211< .01 to 0.000104 ppm
2007-01-100 ppm550 ppm
2007-01-09<0.01 ppm76< .01 to 0.000132 ppm
2007-01-080 ppm110 ppm
2007-01-030 ppm990 ppm
2007-01-02<0.01 ppm108< .01 to 7.3E-5 ppm
2006-12-270 ppm550 ppm
2006-12-26<0.01 ppm53< .01 to 0.000146 ppm
2006-12-20<0.01 ppm43< .01 to 5.0E-5 ppm
2006-12-19<0.01 ppm96< .01 to 0.000137 ppm
2006-12-13<0.01 ppm119< .01 to 4.3E-5 ppm
2006-12-11<0.01 ppm10< .01 to 0.000144 ppm
2006-12-070 ppm110 ppm
2006-12-060 ppm10100 ppm
2006-12-05<0.01 ppm108< .01 to 4.1E-5 ppm
2006-11-220 ppm550 ppm
2006-11-21<0.01 ppm70< .01 to 0.000451 ppm
2006-11-15<0.01 ppm87< .01 to 2.1E-5 ppm
2006-11-14<0.01 ppm10< .01 to 0.000271 ppm
2006-11-130 ppm550 ppm
2006-11-080 ppm660 ppm
2006-11-07<0.01 ppm96< .01 to 7.6E-5 ppm
2006-11-010 ppm11110 ppm
2006-10-25<0.01 ppm53< .01 to 0.000114 ppm
2006-10-240 ppm550 ppm
2006-10-180 ppm660 ppm
2006-10-17<0.01 ppm54< .01 to 2.5E-5 ppm
2006-10-11<0.01 ppm65< .01 to 3.0E-5 ppm
2006-10-10<0.01 ppm63< .01 to 9.9E-5 ppm
2006-10-040 ppm990 ppm
2006-10-030 ppm10100 ppm
2006-09-27<0.01 ppm54< .01 to 2.7E-5 ppm
2006-09-260 ppm440 ppm
2006-09-200 ppm660 ppm
2006-09-190 ppm440 ppm
2006-09-130 ppm660 ppm
2006-09-12<0.01 ppm76< .01 to 2.6E-5 ppm
2006-09-060 ppm10100 ppm
2006-09-050 ppm11110 ppm
2006-08-300 ppm550 ppm
2006-08-29<0.01 ppm54< .01 to 7.2E-5 ppm
2006-08-230 ppm440 ppm
2006-08-220 ppm660 ppm
2006-08-160 ppm770 ppm
2006-08-150 ppm550 ppm
2006-08-090 ppm770 ppm
2006-08-080 ppm990 ppm
2006-08-030 ppm220 ppm
2006-08-020 ppm660 ppm
2006-08-010 ppm10100 ppm
2006-07-310 ppm110 ppm
2006-07-27<0.01 ppm21< .01 to 2.0E-5 ppm
2006-07-260 ppm550 ppm
2006-07-250 ppm550 ppm
2006-07-200 ppm110 ppm
2006-07-190 ppm660 ppm
2006-07-18<0.01 ppm76< .01 to 0.00037 ppm
2006-07-140 ppm220 ppm
2006-07-130 ppm110 ppm
2006-07-12<0.01 ppm54< .01 to 0.000317 ppm
2006-07-110 ppm660 ppm
2006-07-050 ppm21210 ppm
2006-06-290 ppm110 ppm
2006-06-280 ppm880 ppm
2006-06-27<0.01 ppm43< .01 to 4.7E-5 ppm
2006-06-22<0.01 ppm10< .01 to 3.6E-5 ppm
2006-06-210 ppm770 ppm
2006-06-20<0.01 ppm42< .01 to 3.7E-5 ppm
2006-06-140 ppm660 ppm
2006-06-13<0.01 ppm54< .01 to 4.0E-5 ppm
2006-06-070 ppm13130 ppm
2006-06-06<0.01 ppm109< .01 to 2.8E-5 ppm
2006-05-31<0.01 ppm86< .01 to 5.3E-5 ppm
2006-05-300 ppm330 ppm
2006-05-260 ppm110 ppm
2006-05-250 ppm220 ppm
2006-05-240 ppm550 ppm
2006-05-230 ppm770 ppm
2006-05-19<0.01 ppm21< .01 to 4.1E-5 ppm
2006-05-18<0.01 ppm10< .01 to 4.3E-5 ppm
2006-05-170 ppm12120 ppm
2006-05-16<0.01 ppm87< .01 to 7.7E-5 ppm
2006-05-100 ppm440 ppm
2006-05-090 ppm440 ppm
2006-05-08<0.01 ppm1211< .01 to 9.2E-5 ppm
2006-05-030 ppm13130 ppm
2006-05-02<0.01 ppm87< .01 to 6.8E-5 ppm
2006-04-26<0.01 ppm43< .01 to 8.8E-5 ppm
2006-04-25<0.01 ppm53< .01 to 0.000123 ppm
2006-04-190 ppm770 ppm
2006-04-18<0.01 ppm63< .01 to 0.000145 ppm
2006-04-12<0.01 ppm54< .01 to 0.00013 ppm
2006-04-11<0.01 ppm53< .01 to 0.000179 ppm
2006-04-05<0.01 ppm1211< .01 to 4.1E-5 ppm
2006-04-04<0.01 ppm107< .01 to 9.6E-5 ppm
2006-03-300 ppm220 ppm
2006-03-290 ppm330 ppm
2006-03-28<0.01 ppm42< .01 to 8.6E-5 ppm
2006-03-22<0.01 ppm65< .01 to 0.000299 ppm
2006-03-21<0.01 ppm42< .01 to 4.8E-5 ppm
2006-03-150 ppm660 ppm
2006-03-14<0.01 ppm74< .01 to 0.000182 ppm
2006-03-080 ppm660 ppm
2006-03-07<0.01 ppm106< .01 to 0.00022 ppm
2006-03-020 ppm550 ppm
2006-03-010 ppm880 ppm
2006-02-28<0.01 ppm85< .01 to 0.000283 ppm
2006-02-240 ppm440 ppm
2006-02-22<0.01 ppm43< .01 to 5.6E-5 ppm
2006-02-21<0.01 ppm102< .01 to 0.000421 ppm
2006-02-150 ppm14140 ppm
2006-02-14<0.01 ppm119< .01 to 0.000221 ppm
2006-02-080 ppm12120 ppm
2006-02-070 ppm11110 ppm
2006-02-010 ppm14140 ppm
2006-01-31<0.01 ppm21< .01 to 9.3E-5 ppm
2006-01-26<0.01 ppm10< .01 to 0.000125 ppm
2006-01-250 ppm330 ppm
2006-01-24<0.01 ppm21< .01 to 8.8E-5 ppm
2006-01-180 ppm550 ppm
2006-01-17<0.01 ppm21< .01 to 7.9E-5 ppm
2006-01-120 ppm110 ppm
2006-01-110 ppm440 ppm
2006-01-10<0.01 ppm32< .01 to 4.3E-5 ppm
2006-01-040 ppm660 ppm
2006-01-030 ppm13130 ppm
2005-12-280 ppm660 ppm
2005-12-27<0.01 ppm30< .01 to 9.1E-5 ppm
2005-12-210 ppm220 ppm
2005-12-20<0.01 ppm74< .01 to 0.000278 ppm
2005-12-140 ppm330 ppm
2005-12-13<0.01 ppm97< .01 to 0.000213 ppm
2005-12-090 ppm220 ppm
2005-12-080 ppm110 ppm
2005-12-070 ppm10100 ppm
2005-12-06<0.01 ppm108< .01 to 0.000137 ppm
2005-12-05<0.01 ppm10< .01 to 0.000122 ppm
2005-12-040 ppm110 ppm
2005-12-03<0.01 ppm10< .01 to 0.000115 ppm
2005-12-02<0.01 ppm10< .01 to 8.8E-5 ppm
2005-12-01<0.01 ppm10< .01 to 7.0E-5 ppm
2005-11-30<0.01 ppm10< .01 to 5.0E-5 ppm
2005-11-29<0.01 ppm32< .01 to 0.00054 ppm
2005-11-230 ppm220 ppm
2005-11-220 ppm18180 ppm
2005-11-160 ppm550 ppm
2005-11-150 ppm11110 ppm
2005-11-090 ppm880 ppm
2005-11-08<0.01 ppm1413< .01 to 0.00011 ppm
2005-11-020 ppm770 ppm
2005-11-01<0.01 ppm1312< .01 to 0.000192 ppm
2005-10-270 ppm440 ppm
2005-10-26<0.01 ppm76< .01 to 0.00038 ppm
2005-10-250 ppm990 ppm
2005-10-190 ppm770 ppm
2005-10-18<0.01 ppm1110< .01 to 0.000334 ppm
2005-10-120 ppm770 ppm
2005-10-11<0.01 ppm1110< .01 to 0.000346 ppm
2005-10-060 ppm550 ppm
2005-10-05<0.01 ppm76< .01 to 8.1E-5 ppm
2005-10-040 ppm770 ppm
2005-09-29<0.01 ppm43< .01 to 0.000471 ppm
2005-09-280 ppm660 ppm
2005-09-27<0.01 ppm1211< .01 to 0.00074 ppm
2005-09-220 ppm440 ppm
2005-09-210 ppm220 ppm
2005-09-200 ppm11110 ppm
2005-09-150 ppm660 ppm
2005-09-140 ppm220 ppm
2005-09-130 ppm13130 ppm
2005-09-070 ppm660 ppm
2005-09-060 ppm17170 ppm
2005-09-010 ppm220 ppm
2005-08-300 ppm550 ppm
2005-08-260 ppm110 ppm
2005-08-250 ppm660 ppm
2005-08-240 ppm440 ppm
2005-08-230 ppm12120 ppm
2005-08-220 ppm110 ppm
2005-08-170 ppm220 ppm
2005-08-160 ppm11110 ppm
2005-08-150 ppm110 ppm
2005-08-140 ppm110 ppm
2005-08-130 ppm110 ppm
2005-08-120 ppm110 ppm
2005-08-110 ppm110 ppm
2005-08-100 ppm440 ppm
2005-08-090 ppm10100 ppm
2005-08-080 ppm110 ppm
2005-08-030 ppm11110 ppm
2005-08-020 ppm13130 ppm
2005-08-010 ppm110 ppm
2005-07-310 ppm110 ppm
2005-07-300 ppm110 ppm
2005-07-290 ppm110 ppm
2005-07-280 ppm110 ppm
2005-07-270 ppm11110 ppm
2005-07-260 ppm21210 ppm
2005-07-250 ppm110 ppm
2005-07-240 ppm110 ppm
2005-07-230 ppm110 ppm
2005-07-220 ppm110 ppm
2005-07-210 ppm110 ppm
2005-07-200 ppm770 ppm
2005-07-190 ppm14140 ppm
2005-07-180 ppm110 ppm
2005-07-150 ppm110 ppm
2005-07-140 ppm110 ppm
2005-07-130 ppm880 ppm
2005-07-120 ppm16160 ppm
2005-07-070 ppm110 ppm
2005-07-060 ppm880 ppm
2005-07-050 ppm13130 ppm
2005-06-30<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-29<0.01 ppm20< .01 to 3.2E-5 ppm
2005-06-28<0.01 ppm221< .01 to 3.2E-5 ppm
2005-06-27<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-26<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-25<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-240 ppm110 ppm
2005-06-230 ppm110 ppm
2005-06-220 ppm880 ppm
2005-06-210 ppm15150 ppm
2005-06-200 ppm110 ppm
2005-06-190 ppm110 ppm
2005-06-18<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-17<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-160 ppm220 ppm
2005-06-150 ppm770 ppm
2005-06-140 ppm18180 ppm
2005-06-13<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-12<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-110 ppm110 ppm
2005-06-100 ppm110 ppm
2005-06-090 ppm110 ppm
2005-06-080 ppm14140 ppm
2005-06-070 ppm15150 ppm
2005-06-06<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-05<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-040 ppm110 ppm
2005-06-03<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-02<0.01 ppm10< .01 to 3.2E-5 ppm
2005-06-010 ppm110 ppm
2005-05-310 ppm330 ppm
2005-05-300 ppm110 ppm
2005-05-290 ppm110 ppm
2005-05-280 ppm110 ppm
2005-05-270 ppm110 ppm
2005-05-26<0.01 ppm10< .01 to 3.2E-5 ppm
2005-05-250 ppm990 ppm
2005-05-24<0.01 ppm1816< .01 to 3.8E-5 ppm
2005-05-23<0.01 ppm20< .01 to 3.2E-5 ppm
2005-05-220 ppm220 ppm
2005-05-210 ppm220 ppm
2005-05-20<0.01 ppm20< .01 to 3.2E-5 ppm
2005-05-190 ppm330 ppm
2005-05-180 ppm660 ppm
2005-05-170 ppm20200 ppm
2005-05-16<0.01 ppm20< .01 to 3.2E-5 ppm
2005-05-15<0.01 ppm10< .01 to 0.0001 ppm
2005-05-14<0.01 ppm10< .01 to 0.000106 ppm
2005-05-13<0.01 ppm10< .01 to 3.2E-5 ppm
2005-05-120 ppm110 ppm
2005-05-110 ppm660 ppm
2005-05-100 ppm20200 ppm
2005-05-040 ppm990 ppm
2005-05-030 ppm16160 ppm
2005-04-280 ppm220 ppm
2005-04-270 ppm880 ppm
2005-04-260 ppm17170 ppm
2005-04-200 ppm330 ppm
2005-04-19<0.01 ppm1614< .01 to 5.2E-5 ppm
2005-04-130 ppm770 ppm
2005-04-120 ppm16160 ppm
2005-04-060 ppm330 ppm
2005-04-050 ppm16160 ppm
2005-03-290 ppm220 ppm
2005-03-230 ppm330 ppm
2005-03-220 ppm15150 ppm
2005-03-170 ppm330 ppm
2005-03-160 ppm990 ppm
2005-03-150 ppm10100 ppm
2005-03-100 ppm220 ppm
2005-03-090 ppm330 ppm
2005-03-080 ppm14140 ppm
2005-03-070 ppm110 ppm
2005-03-020 ppm110 ppm
2005-03-010 ppm12120 ppm
2005-02-230 ppm880 ppm
2005-02-22<0.01 ppm1513< .01 to 0.000405 ppm
2005-02-170 ppm330 ppm
2005-02-16<0.01 ppm1614< .01 to 0.000411 ppm
2005-02-150 ppm770 ppm
2005-02-090 ppm660 ppm
2005-02-080 ppm16160 ppm
2005-02-030 ppm330 ppm
2005-02-020 ppm990 ppm
2005-02-010 ppm16160 ppm
2005-01-270 ppm220 ppm
2005-01-260 ppm440 ppm
2005-01-250 ppm17170 ppm
2005-01-200 ppm440 ppm
2005-01-190 ppm330 ppm
2005-01-180 ppm15150 ppm
2005-01-130 ppm220 ppm
2005-01-120 ppm440 ppm
2005-01-11<0.01 ppm1711< .01 to 0.000196 ppm
2005-01-060 ppm440 ppm
2005-01-050 ppm770 ppm
2005-01-04<0.01 ppm1716< .01 to 0.000107 ppm
2004-12-29<0.01 ppm75< .01 to 0.000222 ppm
2004-12-280 ppm11110 ppm
2004-12-220 ppm660 ppm
2004-12-210 ppm12120 ppm
2004-12-150 ppm880 ppm
2004-12-140 ppm11110 ppm
2004-12-090 ppm110 ppm
2004-12-08<0.01 ppm108< .01 to 5.6E-5 ppm
2004-12-070 ppm12120 ppm
2004-11-300 ppm220 ppm
2004-11-240 ppm220 ppm
2004-11-230 ppm220 ppm
2004-11-220 ppm14140 ppm
2004-11-180 ppm110 ppm
2004-11-170 ppm110 ppm
2004-11-160 ppm330 ppm
2004-11-150 ppm14140 ppm
2004-11-100 ppm550 ppm
2004-11-090 ppm220 ppm
2004-11-080 ppm23230 ppm
2004-11-040 ppm330 ppm
2004-11-030 ppm770 ppm
2004-11-020 ppm220 ppm
2004-11-010 ppm14140 ppm
2004-10-270 ppm440 ppm
2004-10-260 ppm220 ppm
2004-10-250 ppm14140 ppm
2004-10-210 ppm110 ppm
2004-10-200 ppm330 ppm
2004-10-190 ppm220 ppm
2004-10-180 ppm14140 ppm
2004-10-140 ppm110 ppm
2004-10-13<0.01 ppm54< .01 to 7.5E-5 ppm
2004-10-120 ppm220 ppm
2004-10-110 ppm17170 ppm
2004-10-070 ppm220 ppm
2004-10-060 ppm10100 ppm
2004-10-050 ppm220 ppm
2004-10-040 ppm15150 ppm
2004-09-300 ppm330 ppm
2004-09-290 ppm330 ppm
2004-09-280 ppm220 ppm
2004-09-270 ppm12120 ppm
2004-09-230 ppm220 ppm
2004-09-220 ppm440 ppm
2004-09-210 ppm220 ppm
2004-09-200 ppm16160 ppm
2004-09-170 ppm220 ppm
2004-09-160 ppm110 ppm
2004-09-15<0.01 ppm2321< .01 to 6.6E-5 ppm
2004-09-140 ppm550 ppm
2004-09-130 ppm550 ppm
2004-09-120 ppm220 ppm
2004-09-110 ppm220 ppm
2004-09-100 ppm550 ppm
2004-09-090 ppm660 ppm
2004-09-080 ppm14140 ppm
2004-09-070 ppm10100 ppm
2004-08-310 ppm110 ppm
2004-08-30<0.01 ppm1614< .01 to 8.8E-5 ppm
2004-08-290 ppm220 ppm
2004-08-280 ppm220 ppm
2004-08-270 ppm220 ppm
2004-08-250 ppm440 ppm
2004-08-230 ppm13130 ppm
2004-08-180 ppm13130 ppm
2004-08-160 ppm440 ppm
2004-08-120 ppm440 ppm
2004-08-110 ppm990 ppm
2004-08-090 ppm23230 ppm
2004-08-040 ppm330 ppm
2004-08-030 ppm770 ppm
2004-08-020 ppm17170 ppm
2004-07-300 ppm110 ppm
2004-07-280 ppm11110 ppm
2004-07-260 ppm330 ppm
2004-07-220 ppm110 ppm
2004-07-210 ppm330 ppm
2004-07-190 ppm12120 ppm
2004-07-150 ppm550 ppm
2004-07-140 ppm770 ppm
2004-07-130 ppm660 ppm
2004-07-120 ppm17170 ppm
2004-07-090 ppm110 ppm
2004-07-070 ppm770 ppm
2004-07-060 ppm17170 ppm
2004-06-300 ppm440 ppm
2004-06-280 ppm17170 ppm
2004-06-230 ppm660 ppm
2004-06-210 ppm15150 ppm
2004-06-160 ppm660 ppm
2004-06-140 ppm20200 ppm
2004-06-090 ppm21210 ppm
2004-06-07<0.01 ppm71< .01 to 3.6E-5 ppm
2004-06-020 ppm660 ppm
2004-06-010 ppm110 ppm
2004-05-260 ppm770 ppm
2004-05-240 ppm16160 ppm
2004-05-190 ppm660 ppm
2004-05-170 ppm17170 ppm
2004-05-120 ppm14140 ppm
2004-05-100 ppm15150 ppm
2004-05-050 ppm770 ppm
2004-05-030 ppm15150 ppm
2004-04-280 ppm11110 ppm
2004-04-270 ppm110 ppm
2004-04-260 ppm13130 ppm
2004-04-250 ppm220 ppm
2004-04-240 ppm220 ppm
2004-04-230 ppm220 ppm
2004-04-220 ppm220 ppm
2004-04-210 ppm11110 ppm
2004-04-20<0.01 ppm53< .01 to 0.000552 ppm
2004-04-19<0.01 ppm1312< .01 to 0.000103 ppm
2004-04-18<0.01 ppm10< .01 to 0.000138 ppm
2004-04-17<0.01 ppm10< .01 to 0.000153 ppm
2004-04-160 ppm110 ppm
2004-04-150 ppm330 ppm
2004-04-140 ppm880 ppm
2004-04-130 ppm110 ppm
2004-04-120 ppm18180 ppm
2004-04-110 ppm110 ppm
2004-04-100 ppm110 ppm
2004-04-09<0.01 ppm10< .01 to 4.7E-5 ppm
2004-04-080 ppm550 ppm
2004-04-070 ppm14140 ppm
2004-04-060 ppm110 ppm
2004-04-050 ppm21210 ppm
2004-04-040 ppm110 ppm
2004-04-030 ppm110 ppm
2004-04-020 ppm110 ppm
2004-03-310 ppm880 ppm
2004-03-290 ppm15150 ppm
2004-03-240 ppm770 ppm
2004-03-230 ppm110 ppm
2004-03-220 ppm18180 ppm
2004-03-170 ppm880 ppm
2004-03-150 ppm14140 ppm
2004-03-110 ppm220 ppm
2004-03-100 ppm990 ppm
2004-03-080 ppm24240 ppm
2004-03-050 ppm110 ppm
2004-03-040 ppm110 ppm
2004-03-030 ppm770 ppm
2004-03-01<0.01 ppm1915< .01 to 0.000253 ppm
2004-02-260 ppm220 ppm
2004-02-25<0.01 ppm86< .01 to 5.6E-5 ppm
2004-02-24<0.01 ppm64< .01 to 0.000199 ppm
2004-02-23<0.01 ppm64< .01 to 3.0E-5 ppm
2004-02-180 ppm660 ppm
2004-02-17<0.01 ppm1611< .01 to 0.000113 ppm
2004-02-120 ppm110 ppm
2004-02-110 ppm12120 ppm
2004-02-09<0.01 ppm2114< .01 to 0.00019 ppm
2004-02-050 ppm330 ppm
2004-02-03<0.01 ppm1211< .01 to 2.4E-5 ppm
2004-02-02<0.01 ppm119< .01 to 0.000238 ppm
2004-01-280 ppm440 ppm
2004-01-26<0.01 ppm157< .01 to 0.000131 ppm
2004-01-21<0.01 ppm87< .01 to 2.2E-5 ppm
2004-01-20<0.01 ppm118< .01 to 0.000162 ppm
2004-01-150 ppm110 ppm
2004-01-14<0.01 ppm122< .01 to 0.000102 ppm
2004-01-120 ppm12120 ppm
2004-01-080 ppm440 ppm
2004-01-07<0.01 ppm1312< .01 to 2.9E-5 ppm
2004-01-050 ppm13130 ppm