Manganese

California Water Service (CWS) - Bakersfield

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

332

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	0.704 ppb	61	43	ND - 14.0 ppb
2015	1.33 ppb	44	17	ND - 21.0 ppb
2016	ND	48	0	ND
2017	ND	31	0	ND
2018	0.734 ppb	67	12	ND - 21.0 ppb
2019	1.85 ppb	79	19	ND - 58.0 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
2014-01-06	5810-026-1415	ND
2014-01-06	5701-168-1525	ND
2014-01-13	5701-168-0920	0.735 ppb
2014-01-14	5810-002-1008	ND
2014-02-04	5810-009-0931	ND
2014-03-04	5701-253-0740	0.349 ppb
2014-03-04	5810-253-0810	ND
2014-05-05	5701-250-0958	0.0550 ppb
2014-05-27	5701-250-0916	0.0370 ppb
2014-06-02	5701-250-1048	0.0530 ppb
2014-06-04	5701-131-0953	0.0510 ppb
2014-06-05	5810-005-1016	ND
2014-06-09	5701-250-1017	0.0740 ppb
2014-06-16	5701-250-0908	0.0850 ppb
2014-06-16	5810-253-0735	ND
2014-06-18	5701-163-1105	0.278 ppb
2014-06-23	5701-250-1115	0.0200 ppb
2014-06-25	5810-018-1018	ND
2014-06-25	5810-020-0934	ND
2014-06-30	5810-021-1025	ND
2014-06-30	5701-250-0916	0.0790 ppb
2014-07-07	5806-011-1500	ND
2014-07-07	5701-055-1115	0.0510 ppb
2014-07-07	5701-250-1050	0.173 ppb
2014-07-08	5701-005-1230	0.127 ppb
2014-07-08	5701-091-1430	0.0910 ppb
2014-07-10	5806-031-1345	ND
2014-07-14	5701-250-0909	0.0610 ppb
2014-07-15	5701-129-1100	0.264 ppb
2014-07-28	5701-250-0952	0.0300 ppb
2014-08-06	5806-024-1420	ND
2014-08-13	5806-015-1120	ND
2014-08-13	5701-250-1108	0.0640 ppb
2014-08-18	5701-250-1042	0.146 ppb
2014-08-25	5701-250-1102	0.0400 ppb
2014-09-02	5701-250-0553	0.0920 ppb
2014-09-08	5701-250-1100	0.0420 ppb
2014-09-10	5701-143-1350	0.0400 ppb
2014-09-11	5701-253-0800	0.620 ppb
2014-09-24	5701-143-1255	0.0600 ppb
2014-09-29	5701-250-0922	0.0560 ppb
2014-10-06	5701-006-1032	0.333 ppb
2014-10-06	5701-055-0914	0.0180 ppb
2014-10-06	5701-250-0947	0.0690 ppb
2014-10-07	5701-091-1000	0.0660 ppb
2014-10-08	5701-050-0955	11.9 ppb
2014-10-08	5806-050-1013	14.0 ppb
2014-10-09	5806-004-1326	ND
2014-10-13	5701-250-0956	3.00 ppb
2014-10-20	5806-006-1125	ND
2014-10-20	5701-250-0858	0.0490 ppb
2014-10-27	5701-250-0848	0.0400 ppb
2014-11-03	5701-250-1202	0.329 ppb
2014-12-02	5701-253-1031	0.306 ppb
2014-12-08	5701-143-1345	ND
2014-12-08	5701-163-1420	4.23 ppb
2014-12-08	5701-250-0935	0.132 ppb
2014-12-09	5701-129-1425	4.15 ppb
2014-12-09	5701-131-1348	0.382 ppb
2014-12-16	5810-003-2240	ND
2014-12-21	5701-250-0747	0.151 ppb
2015-01-08	5701-072-1412	0.501 ppb
2015-01-12	5701-055-1000	1.36 ppb
2015-01-12	5701-091-1015	0.553 ppb
2015-01-12	5701-250-1006	0.184 ppb
2015-01-20	5701-250-1420	0.108 ppb
2015-01-26	5701-250-1033	0.574 ppb
2015-02-09	5701-250-1040	0.139 ppb
2015-02-17	5701-250-0915	0.0190 ppb
2015-03-02	5701-143-1526	0.0270 ppb
2015-03-02	5701-250-1306	0.117 ppb
2015-03-04	5806-051-1130	ND
2015-03-04	5806-072-1215	ND
2015-03-12	5701-253-0902	ND
2015-03-19	5806-253-0735	ND
2015-04-06	5701-250-0914	0.128 ppb
2015-04-20	5806-053-1307	ND
2015-04-21	5806-038-1450	ND
2015-05-11	5806-096-1025	ND
2015-05-11	5806-105-1331	13.0 ppb
2015-05-11	5806-156-0938	ND
2015-06-10	5701-143-1015	0.0390 ppb
2015-06-11	5701-253-0811	0.232 ppb
2015-06-16	5701-129-1258	1.68 ppb
2015-07-08	5806-059-1410	ND
2015-07-08	5806-068-1132	ND
2015-08-05	5806-099-1400	ND
2015-08-10	5806-098-1035	ND
2015-08-13	5806-160-0934	ND
2015-09-08	5701-250-0937	ND
2015-09-09	5701-253-0920	ND
2015-09-10	5806-092-1437	ND
2015-09-29	5701-091-1501	ND
2015-09-29	5701-129-1430	ND
2015-10-05	5806-079-1335	ND
2015-10-05	5806-091-1205	ND
2015-10-06	5806-058-1050	ND
2015-10-27	5806-056-1205	ND
2015-12-02	5701-129-1415	ND
2015-12-02	5701-131-1349	ND
2015-12-03	5701-253-0905	ND
2015-12-09	5806-106-1300	21.0 ppb
2015-12-09	5806-163-1203	19.0 ppb
2015-12-10	5806-094-1315	ND
2015-12-15	5806-108-1015	ND
2016-01-04	5806-106-0905	ND
2016-01-04	5806-107-0905	ND
2016-02-01	5701-250-1045	ND
2016-02-10	5806-122-1321	ND
2016-02-16	5701-250-0855	ND
2016-03-02	5701-143-2100	ND
2016-03-07	5701-106-1042	ND
2016-03-07	5701-250-1105	ND
2016-03-16	5806-253-1025	ND
2016-03-16	5701-253-1110	ND
2016-05-04	5806-124-1235	ND
2016-05-05	5806-118-1350	ND
2016-05-09	5701-250-1200	ND
2016-05-16	5701-250-1224	ND
2016-05-20	5806-110-1350	ND
2016-05-20	5806-126-1250	ND
2016-05-23	5810-106-1315	ND
2016-05-23	5701-250-1218	ND
2016-06-06	5701-250-1004	ND
2016-06-08	5806-148-1230	ND
2016-06-08	5701-253-1028	ND
2016-06-15	5806-131-1045	ND
2016-06-15	5701-131-1100	ND
2016-06-16	5806-055-1025	ND
2016-06-17	5806-151-1015	ND
2016-06-20	5701-106-1206	ND
2016-07-06	5701-250-0938	ND
2016-07-14	5806-109-1200	ND
2016-07-18	5701-055-1134	ND
2016-08-08	5806-149-1240	ND
2016-08-08	5806-154-0945	ND
2016-08-10	5701-106-1200	ND
2016-08-15	5806-125-1013	ND
2016-08-15	5701-250-1019	ND
2016-08-18	5806-069-1051	ND
2016-08-18	5806-150-1153	ND
2016-09-07	5806-119-1120	ND
2016-09-08	5806-052-1120	ND
2016-09-12	5806-143-1015	ND
2016-09-12	5806-146-1055	ND
2016-09-15	5701-253-0755	ND
2016-09-22	5806-117-0930	ND
2016-10-03	5701-106-1136	ND
2016-10-11	5701-129-1509	ND
2016-10-11	5701-129-1510	ND
2016-10-11	5806-129-1519	ND
2016-10-11	5701-250-1132	ND
2016-12-20	5701-253-0815	ND
2017-01-09	5701-250-0912	ND
2017-01-10	5806-002-1025	ND
2017-01-17	5701-250-0820	ND
2017-01-19	5806-026-0949	ND
2017-02-06	5701-250-0920	ND
2017-02-13	5701-250-0920	ND
2017-03-14	5701-253-0840	ND
2017-03-14	5806-253-0850	ND
2017-03-23	5806-021-0904	ND
2017-04-10	5806-009-1125	ND
2017-04-19	5806-004-1145	ND
2017-06-08	5701-253-0805	ND
2017-06-13	5701-005-1135	ND
2017-06-19	5806-018-0936	ND
2017-06-19	5701-250-1044	ND
2017-06-20	5806-005-1035	ND
2017-06-20	5806-015-1019	ND
2017-06-26	5806-006-0947	ND
2017-06-26	5701-250-1040	ND
2017-07-12	5806-003-0741	ND
2017-07-17	5701-250-0903	ND
2017-07-18	5806-031-1100	ND
2017-08-09	5701-106-1120	ND
2017-08-23	5806-024-1337	ND
2017-09-13	5810-253-0726	ND
2017-10-02	5701-250-0925	ND
2017-11-02	5701-106-1240	ND
2017-11-06	5806-011-1027	ND
2017-11-29	5701-250-1215	ND
2017-12-07	5701-253-0829	ND
2017-12-28	5806-020-1010	ND
2018-01-25	5701-267-1426	ND
2018-02-06	5701-250-1015	ND
2018-02-07	5701-106-1040	ND
2018-03-13	5810-253-0900	ND
2018-03-14	5806-051-1140	ND
2018-03-14	5806-072-1250	ND
2018-03-22	5806-253-0800	ND
2018-04-09	5701-250-0955	ND
2018-04-12	5701-267-1523	ND
2018-04-16	5806-156-1057	ND
2018-04-17	5806-053-1400	ND
2018-04-17	5806-105-0930	21.0 ppb
2018-04-23	5806-094-1107	ND
2018-04-25	5806-096-0930	ND
2018-04-26	5806-038-1145	ND
2018-05-07	5701-106-1140	ND
2018-06-13	5701-253-0815	ND
2018-06-15	9590-026-0945	ND
2018-06-25	5701-091-0909	ND
2018-07-11	5806-068-1118	ND
2018-07-11	5806-092-1400	ND
2018-07-11	5806-106-1431	ND
2018-07-12	5806-056-1444	ND
2018-07-24	5806-059-1414	ND
2018-07-24	5806-091-0850	ND
2018-08-08	5701-106-1103	ND
2018-08-13	5806-099-0950	ND
2018-08-14	201808160646	0.410 ppb
2018-08-15	201808170447	ND
2018-08-15	201808170417	ND
2018-08-20	201808220455	1.40 ppb
2018-08-20	201808220415	ND
2018-08-21	5806-098-0942	ND
2018-08-27	5806-160-1221	ND
2018-09-10	201809120907	ND
2018-09-11	201809130844	ND
2018-09-12	201809130822	ND
2018-09-13	5806-058-0955	ND
2018-09-17	5701-253-0843	ND
2018-09-20	5806-069-1025	ND
2018-09-24	201809260162	8.00 ppb
2018-09-24	201809260131	ND
2018-09-24	201809260286	ND
2018-10-09	201810110854	ND
2018-10-11	201810120499	0.660 ppb
2018-10-11	201810120500	0.750 ppb
2018-10-15	201810160358	ND
2018-10-15	201810160467	ND
2018-10-18	201810190244	0.520 ppb
2018-10-18	201810190178	ND
2018-10-18	201810190192	ND
2018-10-25	5806-058-1144	ND
2018-11-05	201811070860	ND
2018-11-05	201811070516	12.0 ppb
2018-11-13	201811140107	ND
2018-11-13	201811140277	2.10 ppb
2018-11-13	201811140638	ND
2018-11-15	5701-106-1147	ND
2018-11-16	5806-048-1128	ND
2018-11-29	201812040473	0.430 ppb
2018-12-06	5810-253-0847	ND
2018-12-10	201812120312	ND
2018-12-12	201812130621	1.20 ppb
2018-12-17	201812210200	ND
2018-12-17	201812210247	ND
2018-12-18	201812210208	0.700 ppb
2018-12-19	201812210233	ND
2019-01-08	201901110338	ND
2019-01-09	5806-107-1109	ND
2019-01-16	201901170185	ND
2019-01-22	201901240095	ND
2019-01-22	201901240292	ND
2019-01-23	201901240300	0.650 ppb
2019-02-06	5810-106-1050	22.0 ppb
2019-02-13	5806-122-1021	ND
2019-02-20	201902220166	ND
2019-02-20	201902220150	0.520 ppb
2019-02-22	201902270144	ND
2019-02-25	201902270123	ND
2019-02-26	201902270114	2.50 ppb
2019-03-06	A9B1209-04	ND
2019-03-06	A9B1213-04	ND
2019-03-06	A9B1434-01	6.00 ppb
2019-03-11	A9B1447-01	ND
2019-03-11	A9B1452-01	ND
2019-03-15	201903190149	3.00 ppb
2019-03-19	5810-253-0650	ND
2019-03-25	A9B1440-04	ND
2019-03-26	5806-253-1055	ND
2019-04-08	A9C0891-01	ND
2019-04-08	A9C1237-01	ND
2019-04-08	A9C1782-04	ND
2019-04-09	5701-091-0845	ND
2019-04-11	A9C0890-01	0.420 ppb
2019-04-11	A9C1235-01	0.550 ppb
2019-04-11	A9C1236-01	0.660 ppb
2019-04-15	A9D0922-01	ND
2019-04-22	A9C1780-04	1.40 ppb
2019-04-22	A9C1784-01	5.80 ppb
2019-04-30	5701-267-0920	ND
2019-05-06	5810-106-1330	58.0 ppb
2019-05-13	A9D1735-01	7.10 ppb
2019-05-13	A9D2005-01	1.10 ppb
2019-05-14	5806-125-0840	ND
2019-05-14	5806-126-0920	ND
2019-05-15	5806-118-1330	ND
2019-05-20	A9D1743-04	ND
2019-05-23	A9D1750-01	ND
2019-05-29	5806-110-1130	ND
2019-05-29	5806-124-0930	ND
2019-05-30	5810-106-1030	ND
2019-06-04	A9E0245-04	ND
2019-06-05	5810-253-0833	ND
2019-06-10	5806-148-1100	ND
2019-06-10	5806-151-1059	ND
2019-06-21	A9E0247-04	ND
2019-06-24	5810-124-1230	ND
2019-06-26	A9F0305-04	0.750 ppb
2019-06-26	A9E0244-01	ND
2019-07-10	A9F2439-04	ND
2019-07-10	A9F0754-01	ND
2019-07-10	A9F0863-01	ND
2019-07-11	A9F0853-01	ND
2019-07-11	A9F0934-01	ND
2019-07-15	A9F2433-01	ND
2019-07-18	5806-109-0955	ND
2019-08-07	5810-106-1325	ND
2019-08-07	5810-124-0950	ND
2019-08-12	5806-117-1130	ND
2019-08-12	5806-149-1054	ND
2019-08-12	5806-154-1259	ND
2019-09-04	A9H1696-04	0.430 ppb
2019-09-09	5810-253-0643	ND
2019-09-10	5806-146-0836	ND
2019-09-11	5806-143-0920	ND
2019-09-24	5806-055-1330	ND
2019-10-16	5806-052-1150	ND
2019-10-23	5701-018-0940	ND
2019-10-28	5806-150-1135	ND
2019-11-05	A9J2648-01	0.440 ppb
2019-11-06	A9J2640-04	10.00 ppb
2019-11-14	5810-106-1310	ND
2019-11-20	5806-108-0835	25.0 ppb
2019-11-20	5810-124-1400	ND
2019-12-03	5810-253-0739	ND
2019-12-10	5806-119-0845	ND
2020-01-28	ADA1035-04	ND
2020-05-12	ADD1358-01	ND