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EWG's Tap Water Database — 2021 UPDATE

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Chromium (total)

Aqua Pennsylvania Main System

Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

MORE ABOUT THIS CONTAMINANT

 

167

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.198 ppb10449ND - 2.60 ppb
20141.85 ppb661.20 ppb - 4.70 ppb
20152.71 ppb1915ND - 5.70 ppb
20162.37 ppb661.20 ppb - 6.00 ppb
20174.37 ppb662.30 ppb - 12.0 ppb
20184.40 ppb20201.30 ppb - 7.80 ppb
20192.47 ppb64ND - 8.00 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for total chromium, established in 1991, was based on a 1958 toxicity study in laboratory animals, and applies to both the less-toxic trivalent chromium and the more-toxic hexavalent chromium forms of this compound. This limit does not protect against the risk of cancer from ingestion of hexavalent chromium.

ppb = parts per billion

All test results

Date Lab ID Result
2013-01-13AD779430.300 ppb
2013-01-13AD779490.210 ppb
2013-01-13AD77946ND
2013-01-14AD780050.250 ppb
2013-01-14AD78011ND
2013-01-14AD780020.290 ppb
2013-01-14AD78137ND
2013-01-14AD780080.810 ppb
2013-01-14AD781400.390 ppb
2013-01-15AD77871ND
2013-01-15AD77872ND
2013-01-15AD778700.220 ppb
2013-01-16AD78023ND
2013-01-16AD780240.200 ppb
2013-01-16AD780440.320 ppb
2013-01-16AD779400.280 ppb
2013-01-16AD77952ND
2013-01-17AD78067ND
2013-01-18AD78143ND
2013-01-18AD77955ND
2013-01-22AD78014ND
2013-01-23AD77857ND
2013-01-23AD781460.370 ppb
2013-01-29AD812930.320 ppb
2013-01-29AD812870.300 ppb
2013-01-29AD812890.220 ppb
2013-02-05AD778230.280 ppb
2013-02-14AD807802.60 ppb
2013-02-18AD812550.350 ppb
2013-02-21AD807830.320 ppb
2013-02-25AD812910.260 ppb
2013-04-06AD861890.270 ppb
2013-04-06AD861800.480 ppb
2013-04-06AD861860.350 ppb
2013-04-06AD86195ND
2013-04-06AD86183ND
2013-04-06AD86192ND
2013-04-15AD86858ND
2013-04-16AD86887ND
2013-04-16AD868680.300 ppb
2013-04-16AD86892ND
2013-04-16AD86867ND
2013-04-17AD868260.220 ppb
2013-04-17AD86947ND
2013-04-17AD86946ND
2013-04-17AD86952ND
2013-04-17AD868250.280 ppb
2013-04-18AD86824ND
2013-04-18AD873720.210 ppb
2013-04-18AD873820.230 ppb
2013-06-05AD931900.550 ppb
2013-06-07AD937470.220 ppb
2013-07-16AD98126ND
2013-07-16AD98092ND
2013-07-17AD98390ND
2013-07-17AD98134ND
2013-07-17AD98135ND
2013-07-17AD98140ND
2013-07-17AD983890.250 ppb
2013-07-18AD98264ND
2013-07-18AD98277ND
2013-07-18AD98617ND
2013-07-20AD99138ND
2013-07-20AD99153ND
2013-07-20AD991410.270 ppb
2013-07-20AD99147ND
2013-07-20AD99144ND
2013-07-20AD99150ND
2013-07-22AD990111.10 ppb
2013-07-23AD991950.210 ppb
2013-07-23AD99412ND
2013-07-30AE00527ND
2013-07-30AE00521ND
2013-07-30AE00498ND
2013-07-30AE005240.230 ppb
2013-07-30AE00530ND
2013-07-30AE005040.370 ppb
2013-07-30AE005010.670 ppb
2013-07-30AE00533ND
2013-07-30AE00495ND
2013-07-31AE008160.360 ppb
2013-07-31AE008192.40 ppb
2013-07-31AE008130.310 ppb
2013-07-31AE008220.210 ppb
2013-07-31AE008250.280 ppb
2013-10-28AE130730.370 ppb
2013-10-28AE13131ND
2013-10-29AE132840.470 ppb
2013-10-29AE13286ND
2013-10-29AE13280ND
2013-10-29AE132820.340 ppb
2013-10-29AE13290ND
2013-10-29AE13288ND
2013-10-29AE13292ND
2013-10-30AE134520.290 ppb
2013-10-30AE134500.260 ppb
2013-10-30AE134480.310 ppb
2013-10-30AE13445ND
2013-10-30AE13442ND
2013-10-31AE13766ND
2013-10-31AE137620.280 ppb
2013-10-31AE137600.250 ppb
2013-10-31AE13764ND
2013-10-31AE13768ND
2014-11-18AE569541.30 ppb
2014-11-18AE569471.20 ppb
2014-11-19AE571941.20 ppb
2014-11-19AE571951.40 ppb
2014-11-19AE572281.30 ppb
2014-12-15AE582834.70 ppb
2015-01-07122898823.00 ppb
2015-01-23122908364.00 ppb
2015-02-18124046152.70 ppb
2015-02-18124046314.20 ppb
2015-02-18124046422.50 ppb
2015-02-19124045815.30 ppb
2015-02-19124045964.00 ppb
2015-02-19124046055.20 ppb
2015-03-16125187263.60 ppb
2015-03-17125187381.10 ppb
2015-03-17125187861.000 ppb
2015-03-1812518750ND
2015-03-1812518762ND
2015-03-18125187741.10 ppb
2015-04-22127525245.70 ppb
2015-04-2212752536ND
2015-08-0513138360ND
2015-08-05131383724.30 ppb
2015-08-05131383843.80 ppb
2016-02-08138738466.00 ppb
2016-02-09138738941.20 ppb
2016-02-10138738581.80 ppb
2016-02-10138738701.80 ppb
2016-02-10138738822.10 ppb
2016-03-15139892661.30 ppb
2017-02-211579915412.0 ppb
2017-02-21157991663.40 ppb
2017-02-21157992143.70 ppb
2017-02-22157992022.30 ppb
2017-02-23157991782.30 ppb
2017-02-23157991902.50 ppb
2018-01-15AF733856.70 ppb
2018-01-15AF733905.90 ppb
2018-01-17AF733336.50 ppb
2018-01-17AF733347.30 ppb
2018-01-29AF744456.40 ppb
2018-01-29AF744486.80 ppb
2018-01-31AF744427.80 ppb
2018-02-26AF772647.10 ppb
2018-02-26AF772781.30 ppb
2018-02-27AF773111.60 ppb
2018-02-28AF774551.80 ppb
2018-02-28AF774561.60 ppb
2018-02-28AF774672.30 ppb
2018-03-13AF780274.10 ppb
2018-03-13AF780305.50 ppb
2018-03-14AF780524.10 ppb
2018-03-14AF780511.80 ppb
2018-03-22AF780172.00 ppb
2018-03-26AF799154.00 ppb
2018-06-27AF868183.30 ppb
2019-02-19AG090148.00 ppb
2019-02-20AG090522.30 ppb
2019-02-20AG090531.90 ppb
2019-02-21AG093802.60 ppb
2019-05-13AG17321ND
2019-05-13AG17311ND