Chromium (total)

United Water New York

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.

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266

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	0.287 ppb	85	40	ND - 3.70 ppb
2015	1.13 ppb	49	28	ND - 7.10 ppb
2016	0.454 ppb	35	7	ND - 3.30 ppb
2017	3.92 ppb	34	33	ND - 12.2 ppb
2018	4.24 ppb	31	29	ND - 11.7 ppb
2019	4.52 ppb	32	30	ND - 24.3 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
2014-01-14	370299	ND
2014-01-14	370293	ND
2014-01-14	370296	2.00 ppb
2014-01-15	370365	ND
2014-01-29	201401300199AM	ND
2014-01-29	201401300188AM	ND
2014-02-24	372743	ND
2014-02-24	372741	ND
2014-02-25	372865	ND
2014-02-26	372908	ND
2014-02-27	372986	ND
2014-02-27	372983	ND
2014-03-03	373156	ND
2014-03-12	201403130199AM	0.720 ppb
2014-03-12	201403130211AM	0.260 ppb
2014-03-13	201403140158AM	0.330 ppb
2014-03-25	374567	ND
2014-03-25	374568	ND
2014-04-03	201404040247AM	0.520 ppb
2014-04-03	201404040249AM	0.450 ppb
2014-04-09	201404100804AM	0.320 ppb
2014-04-09	201404100834AM	0.350 ppb
2014-04-10	201404120066AM	0.370 ppb
2014-04-10	201404120081AM	0.370 ppb
2014-04-21	201404220351AM	ND
2014-04-21	201404220231AM	ND
2014-04-22	201404230464AM	ND
2014-04-24	201404250178AM	0.200 ppb
2014-04-24	201404250164AM	0.470 ppb
2014-04-24	201404250191AM	0.360 ppb
2014-04-24	201404250193AM	0.300 ppb
2014-04-29	201404300619AM	0.530 ppb
2014-04-30	201405010472AM	ND
2014-05-08	201405090500AM	0.410 ppb
2014-05-15	377573	ND
2014-05-15	377573	ND
2014-05-22	378009	ND
2014-05-28	201405290396AM	0.300 ppb
2014-06-05	378810	ND
2014-06-05	378812	ND
2014-06-05	378813	ND
2014-06-18	379603	ND
2014-06-19	379677	ND
2014-06-19	379678	ND
2014-07-08	201407090899AM	ND
2014-07-08	201407090744AM	ND
2014-07-08	201407090781AM	ND
2014-07-10	380900	ND
2014-07-10	380903	ND
2014-07-24	381907	ND
2014-07-24	381908	ND
2014-07-29	382113	ND
2014-07-29	382115	ND
2014-08-11	201408120565AM	0.500 ppb
2014-08-11	201408120487AM	0.290 ppb
2014-09-22	201409230414AM	1.20 ppb
2014-09-22	201409230471AM	0.440 ppb
2014-09-23	385568	ND
2014-09-23	385566	ND
2014-09-24	385712	ND
2014-09-24	385713	ND
2014-10-07	201410080375AM	0.270 ppb
2014-10-14	201410150233AM	0.490 ppb
2014-10-14	201410150286AM	0.620 ppb
2014-10-14	201410150322AM	0.710 ppb
2014-10-15	201410160400AM	0.790 ppb
2014-10-15	201410160395AM	0.460 ppb
2014-10-21	387420	ND
2014-10-27	201410280529AM	0.410 ppb
2014-10-27	201410280617AM	0.370 ppb
2014-11-05	201411060357AM	0.340 ppb
2014-11-05	201411060337AM	0.750 ppb
2014-11-05	201411060319AM	0.550 ppb
2014-11-06	201411070463AM	0.590 ppb
2014-11-06	201411070400AM	0.600 ppb
2014-11-06	201411070563AM	0.670 ppb
2014-11-12	201411130787AM	0.690 ppb
2014-11-18	201411190537AM	0.690 ppb
2014-11-20	201411210451AM	3.70 ppb
2014-12-03	201412040521AM	ND
2014-12-08	390173	ND
2014-12-10	201412110818AM	0.640 ppb
2014-12-10	201412110840AM	0.400 ppb
2014-12-25	372867	ND
2014-12-29	382114	ND
2015-01-29	201501300226AM	0.590 ppb
2015-02-11	201502130070AM	0.540 ppb
2015-02-11	201502130074AM	0.510 ppb
2015-05-20	201505210482AM	0.470 ppb
2015-05-20	201505210593AM	0.400 ppb
2015-05-20	201505210578AM	0.480 ppb
2015-05-20	201505210574AM	0.580 ppb
2015-05-20	201505210542AM	0.590 ppb
2015-05-20	201505210564AM	0.740 ppb
2015-06-15	401044PRI	2.40 ppb
2015-06-15	401045PRI	ND
2015-06-15	401043PRI	2.60 ppb
2015-06-16	401162PRI	2.00 ppb
2015-06-16	401161PRI	2.40 ppb
2015-06-16	401160PRI	2.40 ppb
2015-06-16	401159PRI	2.20 ppb
2015-06-17	201506190045AM	0.460 ppb
2015-06-17	201506180531AM	0.700 ppb
2015-06-17	201506180448AM	0.330 ppb
2015-06-25	201506260205AM	0.440 ppb
2015-07-16	402969PRI	ND
2015-07-16	402968PRI	ND
2015-07-30	403858PRI	ND
2015-08-24	405503PRI	ND
2015-08-27	405688PRI	ND
2015-09-09	406318PRI	4.20 ppb
2015-09-10	406391PRI	7.10 ppb
2015-09-10	406395PRI	6.80 ppb
2015-09-24	407264PRI	ND
2015-10-01	201510020407AM	0.230 ppb
2015-10-07	407978PRI	ND
2015-10-07	407893	2.00 ppb
2015-10-19	408617PRI	ND
2015-10-20	408684PRI	ND
2015-10-20	408688PRI	ND
2015-10-20	408685PRI	ND
2015-10-20	408687	ND
2015-10-20	408686PRI	ND
2015-10-21	408867PRI	ND
2015-10-21	408866PRI	ND
2015-10-29	409362PRI	3.90 ppb
2015-10-29	409364PRI	3.10 ppb
2015-10-29	409363PRI	5.30 ppb
2015-11-05	409791PRI	ND
2015-11-19	410731PRI	ND
2015-11-19	410730PRI	ND
2015-12-02	411296PRI	ND
2015-12-02	411295PRI	2.00 ppb
2015-12-22	412606PRI	ND
2016-02-11	415532	ND
2016-02-11	415531	ND
2016-02-11	415534	ND
2016-02-11	415535	ND
2016-02-11	415533	ND
2016-02-25	416415	ND
2016-04-18	419460	ND
2016-04-18	419458	ND
2016-04-18	419459	ND
2016-04-20	419630	ND
2016-04-20	419627	ND
2016-04-20	419628	ND
2016-04-20	419631	ND
2016-04-20	419629	ND
2016-05-23	421722	ND
2016-06-27	423842	ND
2016-06-28	423913	ND
2016-06-29	424007	ND
2016-06-29	424002	ND
2016-06-29	424005	ND
2016-07-06	424311PRI	ND
2016-07-13	424844	2.50 ppb
2016-07-13	424842	ND
2016-07-14	427908	ND
2016-07-14	424812	ND
2016-07-21	425483	ND
2016-07-25	425641	3.30 ppb
2016-07-25	425643	2.20 ppb
2016-07-27	425841	2.00 ppb
2016-07-28	425956	ND
2016-07-28	425955	2.00 ppb
2016-07-29	426033	ND
2016-08-25	427984	ND
2016-08-25	427983	2.30 ppb
2016-10-03	430551	1.60 ppb
2017-04-27	443308PRI	2.46 ppb
2017-04-27	443309PRI	1.73 ppb
2017-04-27	443310PRI	3.09 ppb
2017-05-02	443512PRI	0.859 ppb
2017-05-02	443509PRI	1.31 ppb
2017-05-04	443740PRI	2.63 ppb
2017-05-04	443741PRI	3.72 ppb
2017-05-04	443742PRI	4.18 ppb
2017-05-11	444252PRI	7.92 ppb
2017-05-16	444483PRI	6.35 ppb
2017-05-18	444733PRI	6.81 ppb
2017-05-30	445322PRI	6.10 ppb
2017-06-15	446365PRI	2.63 ppb
2017-06-15	446366PRI	2.60 ppb
2017-06-28	447099PRI	1.47 ppb
2017-06-28	447101PRI	6.04 ppb
2017-07-05	447424PRI	ND
2017-07-05	447432PRI	2.12 ppb
2017-07-12	447967PRI	2.06 ppb
2017-07-12	447969PRI	1.95 ppb
2017-07-12	447968PRI	1.08 ppb
2017-07-24	448791	12.2 ppb
2017-07-26	448935PRI	4.98 ppb
2017-07-26	448934PRI	5.12 ppb
2017-08-09	449964PRI	5.22 ppb
2017-08-09	449963PRI	3.73 ppb
2017-08-23	450942PRI	5.16 ppb
2017-08-23	450943PRI	5.71 ppb
2017-11-01	455570PRI	4.60 ppb
2017-11-03	455741	5.37 ppb
2017-11-15	456541PRI	4.73 ppb
2017-11-29	457411PRI	2.89 ppb
2017-12-06	457772PRI	5.25 ppb
2017-12-08	457983PRI	1.25 ppb
2018-01-12	8010316-01PRI	3.31 ppb
2018-01-12	8010316-02	1.96 ppb
2018-01-22	8010547-01	9.39 ppb
2018-01-24	8010621-02	5.28 ppb
2018-02-09	8020291-01	7.33 ppb
2018-02-09	8020291-02PRI	5.97 ppb
2018-02-21	8020663-01	5.74 ppb
2018-02-21	8020664-01	5.01 ppb
2018-04-02	8040010-01PRI	4.26 ppb
2018-04-02	8040010-02	0.917 ppb
2018-06-25	8061065-01	11.7 ppb
2018-07-25	8071023-02	7.71 ppb
2018-07-25	8071023-01	6.17 ppb
2018-08-24	8081074-02	0.860 ppb
2018-08-24	8081074-01	8.51 ppb
2018-09-19	8090747-02	ND
2018-09-19	8090747-01	ND
2018-09-21	8090887-01	9.92 ppb
2018-10-01	8010621-01PRI	3.55 ppb
2018-10-03	8100174-01	4.91 ppb
2018-10-03	8100174-02	3.33 ppb
2018-10-15	8100644-01	2.54 ppb
2018-10-17	8100796-01	3.85 ppb
2018-10-17	8100796-02PRI	1.85 ppb
2018-10-19	8100901-01	0.583 ppb
2018-11-26	8110940-01	5.76 ppb
2018-11-30	8111163-02PRI	1.96 ppb
2018-11-30	8111163-01	0.726 ppb
2018-12-05	8120157-01PRI	5.25 ppb
2018-12-05	8120156-01	0.703 ppb
2018-12-14	8120558-01	2.32 ppb
2019-01-09	9010309-01	0.856 ppb
2019-01-25	9010917-01	14.3 ppb
2019-01-25	9010918-01	13.1 ppb
2019-02-06	9020228-01	6.23 ppb
2019-02-08	9020349-01	2.37 ppb
2019-02-08	9020348-01	2.99 ppb
2019-03-22	9090946-01PRI	24.3 ppb
2019-03-22	9030945-01	3.30 ppb
2019-04-01	940033-01	2.45 ppb
2019-04-03	9040192-01	2.29 ppb
2019-04-03	9040193-01	2.67 ppb
2019-04-05	9040335-01	2.08 ppb
2019-04-05	9040334-01	1.72 ppb
2019-04-15	9040667-01	3.16 ppb
2019-04-15	9040666-01	1.99 ppb
2019-04-17	9040797-01PRI	0.663 ppb
2019-05-17	9050831-02	6.86 ppb
2019-05-17	9050831-01	0.571 ppb
2019-06-28	9061206-01	0.218 ppb
2019-06-28	9061206-02	2.12 ppb
2019-07-05	9070284-01	5.01 ppb
2019-07-05	9070285-01	6.49 ppb
2019-07-24	9071226-01	0.500 ppb
2019-07-24	9071225-01	3.97 ppb
2019-08-05	9080161-01	1.81 ppb
2019-08-07	9080340-01	ND
2019-08-19	9080934-02	6.29 ppb
2019-10-16	9100816-01	5.94 ppb
2019-10-28	9101324-01	16.6 ppb
2019-11-27	9111241-01	2.63 ppb
2019-12-18	8010316-01	1.10 ppb
2019-12-19	8100796-01	ND