Manganese

Nipomo Comm. Services District

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

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	88.5 ppb	11	5	ND - 860.0 ppb
2015	17.0 ppb	2	2	7.20 ppb - 26.7 ppb
2016	N/A	0	0	N/A
2017	ND	4	0	ND
2018	0.134 ppb	5	1	ND - 0.670 ppb
2019	0.157 ppb	7	2	ND - 0.670 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
2014-01-22	5867-002-1000	9.00 ppb
2014-04-09	5867-002-0930	7.80 ppb
2014-07-23	5867-033-1045	ND
2014-07-23	5867-021-1210	ND
2014-07-23	5867-020-1235	ND
2014-07-23	5867-015-1120	ND
2014-07-23	5867-002-1000	ND
2014-07-23	5867-004-1015	90.0 ppb
2014-07-23	5867-008-1200	860.0 ppb
2014-10-07	5867-002-0915	7.10 ppb
2014-12-23	5867-005-1245	ND
2015-01-14	5867-002-0945	26.7 ppb
2015-04-08	5867-002-1115	7.20 ppb
2017-07-11	5867-033-1100	ND
2017-07-11	5867-021-1120	ND
2017-07-11	5867-020-1145	ND
2017-07-11	5867-015-1215	ND
2018-12-05	A8K1331-01	ND
2018-12-05	A8K1331-02	ND
2018-12-05	A8K1331-03	ND
2018-12-05	A8K1331-04	ND
2018-12-05	A8K1331-05	0.670 ppb
2019-03-11	A9B0822-01	ND
2019-07-08	A9F3792-01	ND
2019-07-08	A9F3792-02	ND
2019-07-08	A9F3792-03	0.430 ppb
2019-07-08	A9F3792-04	ND
2019-07-08	A9F3792-05	0.670 ppb
2019-09-12	A9H0171-01	ND