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EWG's Tap Water Database — 2019 UPDATE

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Fluoride

City of Corona

Fluoride occurs naturally in surface and groundwater and is also added to drinking water by many water systems. Read More.

Fluoride has been promoted as a chemical that reduces dental cavities. Yet it is now well-established that fluoride primarily exerts its protective effects through topical mechanisms, such as sodium fluoride in toothpaste and mouthwash. In contrast, long-term ingestion of fluoride in water increases dental fluorosis, which includes mottling, pitting and weakening of the teeth. EPA's maximum legal limit is set at 4 parts per million (ppm) to prevent skeletal fluorosis, a condition where bones become brittle and more susceptible to fractures, although these effects may occur at lower doses.

Even fluoride levels of 0.7 ppm, the amount of fluoride in drinking water recommended by the U.S. Public Health Service, can result in too much fluoride for bottle-fed babies. EWG recommends that caregivers mix baby formula with fluoride-free water. The National Toxicology Program is investigating the potential for low doses of fluoride to alter thyroid function and childhood brain development.

 

852

Samples

2

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.317 ppm140112ND - 1.20 ppm
20130.434 ppm144121ND - 4.60 ppm
20140.347 ppm157128ND - 2.90 ppm
20150.320 ppm150115ND - 2.70 ppm
20160.309 ppm11287ND - 2.70 ppm
20170.242 ppm14997ND - 0.790 ppm

ppm = parts per million

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 4 ppm

ppm = parts per million

All test results

Date Lab ID Result
2012-01-054790-062-1040ND
2012-01-104790-034-0825ND
2012-01-104790-035-10450.200 ppm
2012-01-104790-036-11050.300 ppm
2012-01-104790-041-1120ND
2012-01-104790-044-09550.400 ppm
2012-01-104790-045-09400.600 ppm
2012-01-104790-046-09450.400 ppm
2012-01-104790-049-09300.700 ppm
2012-01-304790-019-13300.300 ppm
2012-02-074790-019-09150.400 ppm
2012-02-074790-034-0750ND
2012-02-074790-035-10000.200 ppm
2012-02-074790-036-10250.300 ppm
2012-02-074790-041-1040ND
2012-02-074790-044-09300.400 ppm
2012-02-074790-045-09050.600 ppm
2012-02-074790-046-09100.700 ppm
2012-02-074790-049-08450.700 ppm
2012-03-064790-019-08350.300 ppm
2012-03-064790-034-1030ND
2012-03-064790-035-09150.200 ppm
2012-03-064790-036-09400.300 ppm
2012-03-064790-041-0950ND
2012-03-064790-044-08450.300 ppm
2012-03-064790-045-08250.400 ppm
2012-03-064790-046-08300.300 ppm
2012-03-064790-049-08150.600 ppm
2012-03-064790-062-1005ND
2012-03-284790-052-09550.500 ppm
2012-04-024790-019-11400.300 ppm
2012-04-024790-034-1310ND
2012-04-024790-035-13400.200 ppm
2012-04-024790-036-14400.300 ppm
2012-04-024790-041-1425ND
2012-04-024790-044-11550.400 ppm
2012-04-024790-045-11200.300 ppm
2012-04-024790-046-11150.300 ppm
2012-04-024790-049-12050.700 ppm
2012-05-014790-019-11000.300 ppm
2012-05-014790-034-1200ND
2012-05-014790-035-10300.200 ppm
2012-05-014790-041-1145ND
2012-05-014790-044-09200.300 ppm
2012-05-014790-045-09350.300 ppm
2012-05-014790-046-09400.300 ppm
2012-05-014790-049-09000.700 ppm
2012-05-234790-043-10150.400 ppm
2012-06-054790-019-09500.300 ppm
2012-06-054790-034-1255ND
2012-06-054790-035-11000.200 ppm
2012-06-054790-036-12200.300 ppm
2012-06-054790-041-1235ND
2012-06-054790-043-12000.300 ppm
2012-06-054790-044-10050.300 ppm
2012-06-054790-045-10100.300 ppm
2012-06-054790-046-10200.400 ppm
2012-06-054790-049-09300.700 ppm
2012-06-124790-062-1330ND
2012-06-134790-003-11450.700 ppm
2012-06-134790-013-11150.400 ppm
2012-06-134790-022-10300.300 ppm
2012-06-134790-023-12300.500 ppm
2012-06-134790-030-12000.400 ppm
2012-06-134790-033-13000.400 ppm
2012-06-204790-014-15500.200 ppm
2012-06-204790-015-14500.400 ppm
2012-06-204790-027-09300.300 ppm
2012-06-204790-032-10350.300 ppm
2012-06-204790-038-13100.200 ppm
2012-06-214790-052-10400.400 ppm
2012-06-224790-039-07300.400 ppm
2012-06-274790-024-09300.300 ppm
2012-06-274790-029-14000.300 ppm
2012-06-274790-031-14500.400 ppm
2012-06-274790-054-11200.500 ppm
2012-06-274790-056-10300.300 ppm
2012-07-034790-019-09300.300 ppm
2012-07-034790-034-0730ND
2012-07-034790-035-11000.200 ppm
2012-07-034790-036-12150.300 ppm
2012-07-034790-041-1235ND
2012-07-034790-043-11300.300 ppm
2012-07-034790-044-09350.300 ppm
2012-07-034790-045-09100.300 ppm
2012-07-034790-046-09200.400 ppm
2012-07-034790-049-08450.600 ppm
2012-08-074790-019-10000.300 ppm
2012-08-074790-034-0740ND
2012-08-074790-035-11150.200 ppm
2012-08-074790-036-12300.300 ppm
2012-08-074790-041-1300ND
2012-08-074790-043-12100.300 ppm
2012-08-074790-044-11000.300 ppm
2012-08-074790-045-09300.300 ppm
2012-08-074790-046-09400.400 ppm
2012-08-074790-049-09100.800 ppm
2012-09-054790-062-1055ND
2012-09-124790-052-10300.600 ppm
2012-09-204790-019-09200.300 ppm
2012-09-204790-034-0730ND
2012-09-204790-035-10300.300 ppm
2012-09-204790-036-10500.400 ppm
2012-09-204790-041-1040ND
2012-09-204790-043-11200.500 ppm
2012-09-204790-044-09000.300 ppm
2012-09-204790-045-09100.300 ppm
2012-09-204790-046-09150.500 ppm
2012-09-204790-049-10000.900 ppm
2012-10-024790-019-09200.400 ppm
2012-10-024790-034-0625ND
2012-10-024790-035-07150.300 ppm
2012-10-024790-036-08250.300 ppm
2012-10-024790-041-0840ND
2012-10-024790-043-07400.400 ppm
2012-10-024790-044-10450.300 ppm
2012-10-024790-045-09050.800 ppm
2012-10-024790-046-09100.500 ppm
2012-10-024790-049-09500.900 ppm
2012-11-084790-019-09100.300 ppm
2012-11-084790-034-0730ND
2012-11-084790-035-09550.300 ppm
2012-11-084790-036-10200.300 ppm
2012-11-084790-041-1035ND
2012-11-084790-044-09250.300 ppm
2012-11-084790-045-09000.300 ppm
2012-11-084790-046-09050.300 ppm
2012-11-084790-049-08501.10 ppm
2012-12-044790-055-09000.400 ppm
2012-12-054790-052-07300.500 ppm
2012-12-204790-019-10200.300 ppm
2012-12-204790-034-1100ND
2012-12-204790-035-09350.300 ppm
2012-12-204790-036-11300.300 ppm
2012-12-204790-041-0730ND
2012-12-204790-043-08000.400 ppm
2012-12-204790-044-09500.300 ppm
2012-12-204790-045-10300.300 ppm
2012-12-204790-046-10250.300 ppm
2012-12-204790-049-10051.20 ppm
2013-01-034790-019-09250.200 ppm
2013-01-034790-034-0715ND
2013-01-034790-035-08150.200 ppm
2013-01-034790-036-11300.200 ppm
2013-01-034790-041-11450.1000 ppm
2013-01-034790-043-10450.400 ppm
2013-01-034790-044-08500.200 ppm
2013-01-034790-045-09350.200 ppm
2013-01-034790-046-09400.200 ppm
2013-01-034790-049-09051.10 ppm
2013-01-094790-062-1215ND
2013-02-064790-021-09300.800 ppm
2013-02-064790-027-13300.800 ppm
2013-02-064790-030-11300.900 ppm
2013-02-064790-039-11300.500 ppm
2013-02-134790-052-15100.700 ppm
2013-02-134790-054-13500.800 ppm
2013-02-184790-019-11150.400 ppm
2013-02-184790-034-0900ND
2013-02-184790-035-10350.200 ppm
2013-02-184790-036-09450.400 ppm
2013-02-184790-041-0930ND
2013-02-184790-043-10000.400 ppm
2013-02-184790-044-11450.200 ppm
2013-02-184790-045-11200.300 ppm
2013-02-184790-046-11250.200 ppm
2013-02-184790-049-12000.500 ppm
2013-03-064790-052-15200.600 ppm
2013-04-044790-019-08500.400 ppm
2013-04-044790-034-0800ND
2013-04-044790-036-13550.400 ppm
2013-04-044790-041-14300.1000 ppm
2013-04-044790-043-11500.400 ppm
2013-04-044790-044-08280.400 ppm
2013-04-044790-045-10300.400 ppm
2013-04-044790-046-10400.400 ppm
2013-04-044790-049-09581.20 ppm
2013-04-044790-059-13400.400 ppm
2013-05-014790-024-12300.400 ppm
2013-05-014790-038-10500.400 ppm
2013-05-014790-055-12450.700 ppm
2013-05-024790-019-11250.400 ppm
2013-05-024790-034-0805ND
2013-05-024790-036-09300.600 ppm
2013-05-024790-041-14150.1000 ppm
2013-05-024790-043-08480.500 ppm
2013-05-024790-044-13400.400 ppm
2013-05-024790-045-11050.300 ppm
2013-05-024790-046-11000.400 ppm
2013-05-024790-049-10101.40 ppm
2013-05-024790-059-09070.500 ppm
2013-05-084790-003-14400.700 ppm
2013-05-084790-022-14000.600 ppm
2013-05-084790-023-09100.700 ppm
2013-05-164790-019-13400.400 ppm
2013-05-164790-034-0915ND
2013-05-164790-043-10500.500 ppm
2013-06-054790-052-11240.600 ppm
2013-06-114790-019-11300.300 ppm
2013-06-114790-034-1445ND
2013-06-114790-036-13250.400 ppm
2013-06-114790-041-0850ND
2013-06-114790-043-13050.500 ppm
2013-06-114790-044-10450.400 ppm
2013-06-114790-045-11200.400 ppm
2013-06-114790-046-11250.400 ppm
2013-06-114790-049-10551.30 ppm
2013-06-114790-059-12450.500 ppm
2013-06-114790-062-1345ND
2013-06-264790-028-09004.20 ppm
2013-06-264790-028-09204.60 ppm
2013-07-119590-019-13540.250 ppm
2013-07-119590-034-0803ND
2013-07-119590-036-09370.280 ppm
2013-07-119590-041-1002ND
2013-07-119590-043-08340.290 ppm
2013-07-119590-044-13270.250 ppm
2013-07-119590-045-14490.750 ppm
2013-07-119590-046-14520.750 ppm
2013-07-119590-049-15150.770 ppm
2013-07-119590-059-09160.160 ppm
2013-08-019590-019-10370.220 ppm
2013-08-019590-034-0850ND
2013-08-019590-036-11560.220 ppm
2013-08-019590-041-0940ND
2013-08-019590-043-12220.270 ppm
2013-08-019590-044-10000.240 ppm
2013-08-019590-045-11110.360 ppm
2013-08-019590-046-11130.290 ppm
2013-08-019590-049-10090.580 ppm
2013-08-019590-059-14170.280 ppm
2013-08-079590-032-09400.340 ppm
2013-08-159590-033-09000.380 ppm
2013-08-159590-056-14350.290 ppm
2013-08-219590-029-10020.230 ppm
2013-08-229590-013-09400.350 ppm
2013-08-229590-014-15000.230 ppm
2013-08-229590-015-14020.360 ppm
2013-08-229590-031-08250.360 ppm
2013-09-049590-028-13072.70 ppm
2013-09-049590-052-13230.380 ppm
2013-09-109590-019-17300.250 ppm
2013-09-109590-034-1500ND
2013-09-109590-036-23450.280 ppm
2013-09-109590-041-1610ND
2013-09-109590-044-16500.260 ppm
2013-09-109590-045-17400.840 ppm
2013-09-109590-046-17450.850 ppm
2013-09-109590-049-17150.840 ppm
2013-09-109590-059-23300.280 ppm
2013-09-109590-062-1330ND
2013-09-119590-043-00150.290 ppm
2013-10-039590-019-14490.250 ppm
2013-10-039590-034-1545ND
2013-10-039590-036-09570.300 ppm
2013-10-039590-041-1350ND
2013-10-039590-043-09180.310 ppm
2013-10-039590-044-14210.250 ppm
2013-10-039590-045-14340.240 ppm
2013-10-039590-046-14370.250 ppm
2013-10-039590-049-15170.840 ppm
2013-10-039590-059-09450.310 ppm
2013-11-079590-019-14100.250 ppm
2013-11-079590-034-1125ND
2013-11-079590-036-09400.300 ppm
2013-11-079590-041-1115ND
2013-11-079590-043-10420.300 ppm
2013-11-079590-044-15150.250 ppm
2013-11-079590-045-13580.250 ppm
2013-11-079590-046-14000.250 ppm
2013-11-079590-049-14400.210 ppm
2013-11-079590-059-10150.300 ppm
2013-12-059590-019-12150.140 ppm
2013-12-059590-034-0800ND
2013-12-059590-036-09500.190 ppm
2013-12-059590-041-1010ND
2013-12-059590-043-13350.300 ppm
2013-12-059590-044-11100.140 ppm
2013-12-059590-045-11450.140 ppm
2013-12-059590-046-11550.150 ppm
2013-12-059590-049-11350.680 ppm
2013-12-059590-059-09300.300 ppm
2013-12-109590-052-09350.370 ppm
2013-12-119590-028-11352.50 ppm
2014-01-029590-019-12130.160 ppm
2014-01-029590-034-1355ND
2014-01-029590-036-09550.200 ppm
2014-01-029590-041-1010ND
2014-01-029590-043-09180.330 ppm
2014-01-029590-044-10470.150 ppm
2014-01-029590-045-11400.150 ppm
2014-01-029590-046-11450.160 ppm
2014-01-029590-049-11100.800 ppm
2014-01-029590-059-09350.310 ppm
2014-01-079590-062-1330ND
2014-02-069590-019-11150.150 ppm
2014-02-069590-034-1330ND
2014-02-069590-036-09000.190 ppm
2014-02-069590-041-1020ND
2014-02-069590-043-09400.310 ppm
2014-02-069590-044-11000.140 ppm
2014-02-069590-045-11300.140 ppm
2014-02-069590-046-11370.140 ppm
2014-02-069590-049-11470.840 ppm
2014-02-069590-059-09150.310 ppm
2014-02-129590-021-09000.370 ppm
2014-02-129590-027-10200.330 ppm
2014-02-129590-028-14502.70 ppm
2014-02-129590-039-11000.380 ppm
2014-02-129590-052-11450.390 ppm
2014-02-129590-054-13550.450 ppm
2014-02-269590-030-07300.390 ppm
2014-03-069590-019-09460.130 ppm
2014-03-069590-034-0740ND
2014-03-069590-036-12550.180 ppm
2014-03-069590-041-0826ND
2014-03-069590-043-11250.310 ppm
2014-03-069590-044-13340.130 ppm
2014-03-069590-045-10150.120 ppm
2014-03-069590-046-10160.120 ppm
2014-03-069590-049-14060.810 ppm
2014-03-069590-059-13150.310 ppm
2014-03-129590-028-15352.60 ppm
2014-03-129590-052-13000.390 ppm
2014-03-259590-062-1455ND
2014-04-039590-019-09270.170 ppm
2014-04-039590-034-1442ND
2014-04-039590-036-12520.200 ppm
2014-04-039590-041-1230ND
2014-04-039590-043-08250.320 ppm
2014-04-039590-044-13310.170 ppm
2014-04-039590-045-13500.160 ppm
2014-04-039590-046-13520.170 ppm
2014-04-039590-049-09530.830 ppm
2014-04-039590-059-09050.310 ppm
2014-05-019590-019-11490.260 ppm
2014-05-019590-034-1350ND
2014-05-019590-036-08280.310 ppm
2014-05-019590-041-1043ND
2014-05-019590-043-09450.310 ppm
2014-05-019590-044-11210.260 ppm
2014-05-019590-045-11540.260 ppm
2014-05-019590-046-11550.250 ppm
2014-05-019590-049-13160.830 ppm
2014-05-019590-059-09000.310 ppm
2014-05-149590-024-13250.310 ppm
2014-05-149590-038-10350.240 ppm
2014-05-149590-043-09150.310 ppm
2014-05-149590-055-11450.290 ppm
2014-05-159590-019-11550.260 ppm
2014-05-159590-022-08500.320 ppm
2014-05-159590-023-10050.370 ppm
2014-05-159590-034-1500ND
2014-06-059590-019-08500.260 ppm
2014-06-059590-034-0750ND
2014-06-059590-036-11150.310 ppm
2014-06-059590-041-0800ND
2014-06-059590-043-09500.320 ppm
2014-06-059590-044-08150.270 ppm
2014-06-059590-045-08400.270 ppm
2014-06-059590-046-08450.270 ppm
2014-06-059590-049-08250.790 ppm
2014-06-059590-059-10500.300 ppm
2014-06-119590-028-13002.60 ppm
2014-06-119590-052-11030.380 ppm
2014-06-179590-062-1340ND
2014-07-099590-019-14050.260 ppm
2014-07-099590-034-1340ND
2014-07-099590-036-15100.310 ppm
2014-07-099590-041-1350ND
2014-07-099590-043-14450.320 ppm
2014-07-099590-044-14000.260 ppm
2014-07-099590-045-14150.820 ppm
2014-07-099590-046-14200.830 ppm
2014-07-099590-049-13500.830 ppm
2014-07-099590-059-14550.320 ppm
2014-07-249590-055-08300.300 ppm
2014-08-079590-019-11250.260 ppm
2014-08-079590-034-0745ND
2014-08-079590-036-09200.290 ppm
2014-08-079590-041-0935ND
2014-08-079590-043-08100.300 ppm
2014-08-079590-044-09500.250 ppm
2014-08-079590-045-11100.250 ppm
2014-08-079590-046-11150.260 ppm
2014-08-079590-049-10200.830 ppm
2014-08-079590-059-08350.290 ppm
2014-08-139590-015-09300.380 ppm
2014-08-139590-031-14550.390 ppm
2014-08-139590-032-11000.330 ppm
2014-08-139590-033-13150.380 ppm
2014-08-219590-029-09000.260 ppm
2014-08-269590-003-14000.450 ppm
2014-08-279590-014-13150.250 ppm
2014-08-279590-056-14150.330 ppm
2014-08-289590-013-10300.370 ppm
2014-09-049590-019-08150.260 ppm
2014-09-049590-034-0730ND
2014-09-049590-036-10200.290 ppm
2014-09-049590-041-0940ND
2014-09-049590-043-10500.310 ppm
2014-09-049590-044-09000.260 ppm
2014-09-049590-045-08300.260 ppm
2014-09-049590-046-08350.270 ppm
2014-09-049590-049-08000.850 ppm
2014-09-049590-059-10300.280 ppm
2014-09-109590-028-14302.90 ppm
2014-09-109590-052-07300.360 ppm
2014-09-169590-062-0830ND
2014-10-029590-019-08200.240 ppm
2014-10-029590-034-0730ND
2014-10-029590-036-09200.280 ppm
2014-10-029590-041-0900ND
2014-10-029590-043-10000.310 ppm
2014-10-029590-044-08350.240 ppm
2014-10-029590-045-08100.430 ppm
2014-10-029590-046-08150.370 ppm
2014-10-029590-049-08000.710 ppm
2014-10-029590-059-09300.290 ppm
2014-11-069590-019-10000.200 ppm
2014-11-069590-034-0740ND
2014-11-069590-036-09200.270 ppm
2014-11-069590-041-0910ND
2014-11-069590-043-11000.300 ppm
2014-11-069590-044-09350.200 ppm
2014-11-069590-045-14150.190 ppm
2014-11-069590-046-14200.200 ppm
2014-11-069590-049-10100.780 ppm
2014-11-069590-059-10500.290 ppm
2014-12-029590-019-09100.150 ppm
2014-12-029590-034-0800ND
2014-12-029590-036-10300.270 ppm
2014-12-029590-041-1020ND
2014-12-029590-043-10500.310 ppm
2014-12-029590-044-09500.150 ppm
2014-12-029590-045-09300.360 ppm
2014-12-029590-046-09400.380 ppm
2014-12-029590-049-08500.740 ppm
2014-12-029590-059-11100.250 ppm
2014-12-109590-028-11002.50 ppm
2014-12-109590-052-09500.360 ppm
2015-01-139590-019-11000.1000 ppm
2015-01-139590-034-0740ND
2015-01-139590-036-09300.250 ppm
2015-01-139590-041-0945ND
2015-01-139590-043-08300.290 ppm
2015-01-139590-044-1020ND
2015-01-139590-045-1030ND
2015-01-139590-046-10400.230 ppm
2015-01-139590-059-09150.250 ppm
2015-02-039590-030-10000.780 ppm
2015-02-059590-019-08500.130 ppm
2015-02-059590-034-0755ND
2015-02-059590-036-09300.260 ppm
2015-02-059590-041-1020ND
2015-02-059590-043-09400.300 ppm
2015-02-059590-044-09000.130 ppm
2015-02-059590-045-08200.130 ppm
2015-02-059590-046-08300.130 ppm
2015-02-059590-059-09250.280 ppm
2015-02-129590-027-09000.320 ppm
2015-02-129590-028-14202.70 ppm
2015-02-129590-030-08100.370 ppm
2015-02-129590-039-09500.370 ppm
2015-02-129590-052-13300.360 ppm
2015-02-179590-049-10300.760 ppm
2015-03-059590-019-0900ND
2015-03-059590-034-0740ND
2015-03-059590-036-14200.240 ppm
2015-03-059590-041-0950ND
2015-03-059590-043-11000.310 ppm
2015-03-059590-044-0840ND
2015-03-059590-045-0920ND
2015-03-059590-046-0930ND
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2015-05-069590-034-1130ND
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2015-05-289590-034-0830ND
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2015-06-049590-034-0830ND
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2015-06-049590-041-1300ND
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2015-07-159590-034-0830ND
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2015-08-069590-034-0830ND
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2015-08-069590-041-0900ND
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2015-09-039590-041-1130ND
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2015-10-019590-034-0830ND
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2015-10-019590-041-1130ND
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2015-11-059590-034-0800ND
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2015-11-059590-041-1420ND
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2015-12-039590-019-09300.200 ppm
2015-12-039590-034-0800ND
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2015-12-039590-041-1220ND
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2015-12-089590-062-1410ND
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2016-01-079590-034-0830ND
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2016-01-079590-041-1130ND
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2016-02-049590-034-0830ND
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2016-03-109590-034-0750ND
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2016-05-119590-034-0820ND
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2016-05-119590-041-1540ND
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2016-06-149590-062-1430ND
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2016-07-079590-034-0830ND
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2016-08-049590-034-0820ND
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2016-08-049590-041-1030ND
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2016-08-249590-034-0900ND
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2016-09-139590-062-1020ND
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2016-10-139590-034-0730ND
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2016-10-139590-041-1520ND
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2016-11-039590-034-0825ND
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2017-03-099590-057-1400ND
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2017-03-219590-062-1540ND
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2017-04-069590-057-1400ND
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2017-05-049590-034-1438ND
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2017-05-119590-041-1120ND
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2017-05-119590-057-1420ND
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2017-06-069590-062-1550ND
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2017-07-059590-034-0820ND
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2017-07-059590-041-1410ND
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2017-07-059590-057-1200ND
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2017-08-039590-034-0810ND
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2017-08-039590-041-1500ND
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2017-08-039590-057-1010ND
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2017-08-109590-034-1220ND
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2017-09-079590-034-0820ND
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2017-09-079590-041-1430ND
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2017-09-079590-057-1030ND
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2017-09-199590-062-1500ND
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2017-10-059590-034-0830ND
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2017-10-059590-041-1320ND
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2017-10-059590-044-10400.290 ppm
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2017-10-059590-049-09250.710 ppm
2017-10-059590-057-1100ND
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2017-11-029590-034-0830ND
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2017-11-029590-041-1540ND
2017-11-029590-043-10500.320 ppm
2017-11-029590-044-13300.260 ppm
2017-11-029590-045-09500.250 ppm
2017-11-029590-046-10000.250 ppm
2017-11-029590-049-09300.710 ppm
2017-11-029590-057-1350ND
2017-11-029590-058-1400ND
2017-11-029590-059-15200.330 ppm
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2017-12-079590-034-0800ND
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2017-12-079590-041-1315ND
2017-12-079590-043-13150.320 ppm
2017-12-079590-044-10200.230 ppm
2017-12-079590-045-09300.240 ppm
2017-12-079590-046-09400.240 ppm
2017-12-079590-049-09150.710 ppm
2017-12-079590-057-1110ND
2017-12-079590-058-1120ND
2017-12-079590-059-14500.320 ppm