City of St. Helens
Chromium-6 testing from 2013-2015

Chromium-6 Testing Summary
California's Public Health Goal for chromium-6 is 0.02 parts per billion (ppb)

Samples:8
Detects:8
Average :0.17 ppb
Range:0.055-0.37 ppb

Chromium-6 Tests

Sample DateSample FacilitySample PointResult
2015-02-24Distribution SystemMax. Res. Time in Dist. System0.14 ppb
2015-02-24Ranney Collectors TPEPTDS from Ranney Collectors0.26 ppb
2015-05-12Distribution SystemMax. Res. Time in Dist. System0.16 ppb
2015-05-12Ranney Collectors TPEPTDS from Ranney Collectors0.15 ppb
2015-08-11Distribution SystemMax. Res. Time in Dist. System0.068 ppb
2015-08-11Ranney Collectors TPEPTDS from Ranney Collectors0.15 ppb
2015-11-10Ranney Collectors TPEPTDS from Ranney Collectors0.37 ppb
2015-11-10Distribution SystemMax. Res. Time in Dist. System0.055 ppb

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