Manganese

Cal Am Water Company - Bishop

Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.

MORE ABOUT THIS CONTAMINANT

110

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	28.7 ppb	19	9	ND - 192.0 ppb
2015	22.5 ppb	18	11	ND - 48.0 ppb
2016	26.1 ppb	19	12	ND - 56.0 ppb
2017	29.0 ppb	21	12	ND - 80.0 ppb
2018	23.1 ppb	15	8	ND - 57.0 ppb
2019	28.2 ppb	18	7	ND - 184.0 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 100 ppb

The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-01-08	1225-018-1030	ND
2014-02-06	1225-018-1015	ND
2014-03-20	1225-016-1330	88.0 ppb
2014-03-20	1225-018-0945	ND
2014-04-03	1225-018-1334	ND
2014-04-07	1225-016-0920	48.0 ppb
2014-05-14	1225-018-0904	ND
2014-06-12	1225-018-1230	ND
2014-06-18	1225-016-1310	54.0 ppb
2014-06-18	1225-018-1225	ND
2014-07-07	1225-018-1000	28.0 ppb
2014-08-07	1225-018-1000	ND
2014-09-02	1225-016-1225	42.0 ppb
2014-09-18	1225-018-0925	192.0 ppb
2014-09-30	1225-018-0835	ND
2014-10-08	1225-018-1100	ND
2014-11-04	1225-018-1310	21.0 ppb
2014-12-18	1225-016-1405	52.0 ppb
2014-12-18	1225-018-1410	21.0 ppb
2015-01-05	1225-018-1230	ND
2015-02-05	1225-018-0940	25.0 ppb
2015-03-04	1225-016-0940	ND
2015-03-04	1225-018-1100	32.0 ppb
2015-04-16	1225-018-1200	28.0 ppb
2015-05-19	1225-018-0856	ND
2015-06-22	1225-018-1320	ND
2015-06-30	1225-016-1500	44.0 ppb
2015-07-09	1225-018-1000	29.0 ppb
2015-07-14	1225-016-1000	44.0 ppb
2015-08-05	1225-018-1130	ND
2015-08-18	1225-016-1040	45.0 ppb
2015-09-30	1225-016-0900	48.0 ppb
2015-09-30	1225-018-0845	27.0 ppb
2015-10-26	1225-018-0900	ND
2015-11-25	1225-018-1100	42.0 ppb
2015-12-09	1225-018-1350	ND
2015-12-10	1225-016-0945	41.0 ppb
2016-01-20	1225-018-1329	ND
2016-02-10	1225-018-1132	30.0 ppb
2016-03-09	1225-016-1120	56.0 ppb
2016-03-09	1225-018-1111	49.0 ppb
2016-03-29	1225-016-1449	52.0 ppb
2016-04-11	1225-018-1040	33.0 ppb
2016-04-27	1225-016-1213	43.0 ppb
2016-05-09	1225-018-1145	30.0 ppb
2016-06-07	1225-018-1107	31.0 ppb
2016-06-08	1225-016-1124	39.0 ppb
2016-06-29	1225-019-1008	ND
2016-07-11	1225-018-1050	ND
2016-08-09	1225-018-1152	ND
2016-09-07	1225-018-0845	30.0 ppb
2016-10-05	1225-018-1055	ND
2016-11-10	1225-018-1350	ND
2016-12-07	1225-018-1115	ND
2016-12-20	1225-016-1039	53.0 ppb
2016-12-27	1225-016-1247	49.0 ppb
2017-01-05	1225-018-1024	ND
2017-01-31	1225-016-1215	80.0 ppb
2017-01-31	1225-016-1610	45.0 ppb
2017-01-31	1225-019-1240	ND
2017-01-31	1225-019-1550	ND
2017-02-08	1225-018-1155	ND
2017-02-28	1225-016-1320	67.0 ppb
2017-03-06	1225-018-1156	ND
2017-04-13	1225-018-1100	ND
2017-04-25	1225-016-1405	67.0 ppb
2017-05-03	1225-018-1102	ND
2017-05-30	1225-016-1400	70.0 ppb
2017-06-22	1225-018-1030	ND
2017-07-26	1225-016-1421	46.0 ppb
2017-07-26	1225-018-1410	38.0 ppb
2017-08-30	1225-018-1030	37.0 ppb
2017-09-06	1225-018-0917	33.0 ppb
2017-10-04	1225-018-0814	ND
2017-10-05	1225-016-1352	51.0 ppb
2017-11-06	1225-018-0943	42.0 ppb
2017-12-07	1225-018-1230	34.0 ppb
2018-01-29	1225-016-0855	52.0 ppb
2018-01-29	1225-018-0845	20.0 ppb
2018-02-07	1225-018-1031	42.0 ppb
2018-03-07	1225-018-1015	ND
2018-04-03	1225-016-1033	46.0 ppb
2018-04-03	1225-018-0957	ND
2018-05-02	1225-018-0845	45.0 ppb
2018-06-05	1225-018-0945	ND
2018-07-25	1225-016-0912	51.0 ppb
2018-07-25	1225-018-0843	57.0 ppb
2018-08-01	1225-018-1105	33.0 ppb
2018-09-06	1225-018-1100	ND
2018-10-04	1225-018-0915	ND
2018-11-06	1225-018-0930	ND
2018-12-03	1225-018-0910	ND
2019-01-03	1225-018-1015	ND
2019-02-08	1225-018-1230	ND
2019-03-07	1225-018-1215	ND
2019-04-18	1225-018-1415	ND
2019-04-24	1225-019-1300	ND
2019-05-07	1225-018-1230	ND
2019-05-14	1225-016-1615	50.0 ppb
2019-06-07	1225-018-1300	ND
2019-07-08	1225-016-1720	57.0 ppb
2019-07-16	1225-018-1200	ND
2019-08-12	1225-018-1455	ND
2019-09-12	1225-018-1250	ND
2019-10-10	1225-018-1135	184.0 ppb
2019-10-16	1225-018-1340	67.0 ppb
2019-10-17	1225-016-1715	52.0 ppb
2019-10-21	1225-018-1740	38.0 ppb
2019-11-05	1225-018-1330	60.0 ppb
2019-12-18	1225-018-1308	ND