Manganese

Hillview Water Company-oakhurst/sierra Lakes

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

448

Samples

Samples exceeding legal limit (MCL)

173

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2014	106.3 ppb	69	49	ND - 550.0 ppb
2015	187.1 ppb	49	27	ND - 870.0 ppb
2016	179.0 ppb	54	45	ND - 580.0 ppb
2017	138.4 ppb	52	48	ND - 680.0 ppb
2018	132.4 ppb	56	39	ND - 490.0 ppb
2019	73.8 ppb	168	85	ND - 330.0 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
2014-01-22	5810-013-1127	ND
2014-01-22	5810-014-1024	ND
2014-01-22	5810-026-1023	360.0 ppb
2014-01-22	5810-027-1126	95.0 ppb
2014-02-19	5810-013-1101	ND
2014-02-19	5810-014-0931	ND
2014-02-19	5810-026-0930	310.0 ppb
2014-02-19	5810-027-1100	200.0 ppb
2014-03-05	5810-030-0925	ND
2014-03-05	5810-031-0910	65.0 ppb
2014-03-05	5810-032-0853	140.0 ppb
2014-03-05	5810-033-0900	56.0 ppb
2014-03-05	5810-034-0940	52.0 ppb
2014-03-13	5810-013-1545	ND
2014-04-17	5810-013-1537	ND
2014-04-17	5810-014-1454	ND
2014-04-17	5810-026-1453	330.0 ppb
2014-04-17	5810-027-1536	79.0 ppb
2014-04-28	106550P	3.60 ppb
2014-04-28	106551P	7.30 ppb
2014-04-28	106548P	29.0 ppb
2014-04-28	106549P	34.0 ppb
2014-04-28	306633P	72.0 ppb
2014-04-30	306634P	5.30 ppb
2014-05-22	5810-002-1510	310.0 ppb
2014-05-22	5810-003-1458	130.0 ppb
2014-05-22	5810-007-1545	55.0 ppb
2014-05-22	5810-009-1555	39.0 ppb
2014-05-22	5810-010-1602	84.0 ppb
2014-05-22	5810-013-1548	ND
2014-05-22	5810-014-0949	ND
2014-05-22	5810-024-1522	360.0 ppb
2014-05-22	5810-026-0948	310.0 ppb
2014-05-22	5810-027-1547	73.0 ppb
2014-05-22	5810-028-1425	ND
2014-06-24	5810-013-1339	21.0 ppb
2014-06-24	5810-014-1145	ND
2014-06-24	5810-026-1144	460.0 ppb
2014-06-24	5810-027-1338	220.0 ppb
2014-07-23	5810-013-1045	29.0 ppb
2014-07-23	5810-014-1023	ND
2014-07-23	5810-026-1022	350.0 ppb
2014-07-23	5810-027-1044	51.0 ppb
2014-08-18	5810-013-1515	29.0 ppb
2014-08-18	5810-014-1427	ND
2014-08-18	5810-026-1426	390.0 ppb
2014-08-18	5810-027-1514	100.0 ppb
2014-09-24	5810-013-1045	26.0 ppb
2014-09-24	5810-014-1201	ND
2014-09-24	5810-026-1200	550.0 ppb
2014-09-24	5810-027-1043	25.0 ppb
2014-10-16	5810-013-1138	30.0 ppb
2014-10-16	5810-014-1306	ND
2014-10-16	5810-026-1305	540.0 ppb
2014-10-16	5810-027-1137	130.0 ppb
2014-10-21	109401P	ND
2014-10-21	309325P	5.90 ppb
2014-10-21	109402P	7.70 ppb
2014-10-21	309324P	14.0 ppb
2014-10-21	109400P	29.0 ppb
2014-10-21	109399P	37.0 ppb
2014-11-17	5810-013-1329	ND
2014-11-17	5810-014-1400	ND
2014-11-17	5810-026-1359	360.0 ppb
2014-11-17	5810-027-1328	160.0 ppb
2014-12-17	5810-013-1036	64.0 ppb
2014-12-17	5810-014-1541	ND
2014-12-17	5810-026-1540	440.0 ppb
2014-12-17	5810-027-1035	66.0 ppb
2015-01-19	5810-013-1108	ND
2015-01-19	5810-014-1310	ND
2015-01-19	5810-026-1309	520.0 ppb
2015-01-19	5810-027-1107	76.0 ppb
2015-02-09	5810-013-1351	ND
2015-02-09	5810-014-1459	ND
2015-02-09	5810-026-1458	460.0 ppb
2015-02-09	5810-027-1350	75.0 ppb
2015-03-09	5810-013-1125	ND
2015-03-09	5810-014-1632	ND
2015-03-09	5810-026-1631	560.0 ppb
2015-03-09	5810-027-1124	150.0 ppb
2015-04-20	5810-013-1334	ND
2015-04-20	5810-014-1007	ND
2015-04-20	5810-026-1006	630.0 ppb
2015-04-20	5810-027-1333	74.0 ppb
2015-05-19	5810-013-1313	ND
2015-05-19	5810-014-1054	ND
2015-05-19	5810-026-1053	650.0 ppb
2015-05-19	5810-027-1312	210.0 ppb
2015-06-08	5810-013-1542	ND
2015-06-08	5810-014-1042	ND
2015-06-08	5810-026-1041	680.0 ppb
2015-06-08	5810-027-1541	340.0 ppb
2015-07-14	5810-013-1623	ND
2015-07-14	5810-014-1608	ND
2015-07-14	5810-026-1607	550.0 ppb
2015-07-14	5810-027-1622	80.0 ppb
2015-08-18	5810-013-0418	ND
2015-08-18	5810-014-0951	ND
2015-08-18	5810-026-0950	380.0 ppb
2015-08-18	5810-027-0417	420.0 ppb
2015-09-15	5810-001-1059	500.0 ppb
2015-09-15	5810-013-1527	ND
2015-09-15	5810-014-1046	130.0 ppb
2015-09-15	5810-026-1045	320.0 ppb
2015-09-15	5810-027-1525	370.0 ppb
2015-10-06	5810-013-1414	ND
2015-10-06	5810-014-1624	ND
2015-10-06	5810-026-1623	350.0 ppb
2015-10-06	5810-027-1413	53.0 ppb
2015-11-10	5810-013-1424	33.0 ppb
2015-11-10	5810-014-1455	ND
2015-11-10	5810-026-1454	870.0 ppb
2015-11-10	5810-027-1423	240.0 ppb
2015-12-15	5810-013-0957	ND
2015-12-15	5810-014-1043	ND
2015-12-15	5810-026-1042	370.0 ppb
2015-12-15	5810-027-0956	76.0 ppb
2016-01-19	5810-013-1031	23.0 ppb
2016-01-19	5810-014-1416	ND
2016-01-19	5810-026-1415	180.0 ppb
2016-01-19	5810-027-1030	580.0 ppb
2016-02-09	5810-013-1143	49.0 ppb
2016-02-09	5810-014-1009	ND
2016-02-09	5810-026-1008	310.0 ppb
2016-02-09	5810-027-1142	78.0 ppb
2016-03-01	5810-013-1325	ND
2016-03-01	5810-014-1046	ND
2016-03-01	5810-026-1045	440.0 ppb
2016-03-01	5810-027-1324	97.0 ppb
2016-04-18	5810-013-1157	ND
2016-04-18	5810-027-1156	300.0 ppb
2016-04-19	5810-001-0849	360.0 ppb
2016-04-19	5810-002-0838	50.0 ppb
2016-04-19	5810-003-0822	220.0 ppb
2016-05-23	5810-001-1420	42.0 ppb
2016-05-23	5810-002-1409	250.0 ppb
2016-05-23	5810-003-1428	120.0 ppb
2016-05-23	5810-013-1340	ND
2016-05-23	5810-027-1339	220.0 ppb
2016-06-07	5810-013-1111	ND
2016-06-07	5810-027-1110	280.0 ppb
2016-07-05	5810-013-1328	ND
2016-07-05	5810-027-1327	450.0 ppb
2016-07-19	5810-001-1435	350.0 ppb
2016-07-19	5810-002-1438	160.0 ppb
2016-07-19	5810-003-1445	150.0 ppb
2016-08-09	5810-001-0950	390.0 ppb
2016-08-09	5810-002-1000	200.0 ppb
2016-08-09	5810-003-0935	170.0 ppb
2016-08-09	5810-013-1133	ND
2016-08-09	5810-027-1132	360.0 ppb
2016-09-13	5810-001-1108	390.0 ppb
2016-09-13	5810-002-1111	540.0 ppb
2016-09-13	5810-003-1102	110.0 ppb
2016-09-13	5810-013-1345	84.0 ppb
2016-09-13	5810-027-1344	87.0 ppb
2016-10-18	5810-001-1132	330.0 ppb
2016-10-18	5810-002-1135	370.0 ppb
2016-10-18	5810-003-1148	140.0 ppb
2016-10-18	5810-013-1100	24.0 ppb
2016-10-18	5810-027-1059	280.0 ppb
2016-11-08	5810-001-1404	340.0 ppb
2016-11-08	5810-002-1025	67.0 ppb
2016-11-08	5810-003-1411	150.0 ppb
2016-11-08	5810-013-1346	24.0 ppb
2016-11-08	5810-027-1345	49.0 ppb
2016-12-06	5810-001-1055	310.0 ppb
2016-12-06	5810-002-1105	180.0 ppb
2016-12-06	5810-003-1110	170.0 ppb
2016-12-06	5810-013-1347	73.0 ppb
2016-12-06	5810-027-1346	120.0 ppb
2017-01-16	5810-001-1533	360.0 ppb
2017-01-16	5810-002-1522	39.0 ppb
2017-01-16	5810-003-1512	680.0 ppb
2017-01-16	5810-013-1410	62.0 ppb
2017-01-16	5810-027-1409	60.0 ppb
2017-02-14	5810-001-1010	130.0 ppb
2017-02-14	5810-002-1015	78.0 ppb
2017-02-14	5810-003-1020	200.0 ppb
2017-02-14	5810-013-1152	72.0 ppb
2017-02-14	5810-027-1151	75.0 ppb
2017-03-07	5810-001-0910	280.0 ppb
2017-03-07	5810-002-0918	74.0 ppb
2017-03-07	5810-003-0932	150.0 ppb
2017-03-07	5810-013-1117	35.0 ppb
2017-03-07	5810-027-1116	200.0 ppb
2017-04-11	5810-001-1508	160.0 ppb
2017-04-11	5810-002-1449	69.0 ppb
2017-04-11	5810-003-1455	260.0 ppb
2017-04-11	5810-013-1314	25.0 ppb
2017-04-11	5810-027-1313	96.0 ppb
2017-05-16	5810-001-1330	130.0 ppb
2017-05-16	5810-002-0940	66.0 ppb
2017-05-16	5810-003-0920	160.0 ppb
2017-05-16	5810-013-1336	35.0 ppb
2017-05-16	5810-027-1335	230.0 ppb
2017-06-20	5810-001-1110	180.0 ppb
2017-06-20	5810-002-1115	ND
2017-06-20	5810-003-1115	160.0 ppb
2017-07-27	5810-039-0920	31.0 ppb
2017-07-27	5810-040-0840	36.0 ppb
2017-07-27	5810-041-0910	21.0 ppb
2017-08-01	5810-002-1545	31.0 ppb
2017-08-01	5810-003-1555	160.0 ppb
2017-08-01	5810-028-1510	ND
2017-08-02	5810-007-0851	49.0 ppb
2017-08-02	5810-030-0905	48.0 ppb
2017-08-02	5810-031-0919	ND
2017-08-02	5810-032-0933	64.0 ppb
2017-08-02	5810-033-0956	64.0 ppb
2017-08-02	5810-034-0908	65.0 ppb
2017-09-05	5810-001-1432	340.0 ppb
2017-09-05	5810-002-1438	160.0 ppb
2017-09-05	5810-003-1450	140.0 ppb
2017-10-25	5810-001-0909	300.0 ppb
2017-10-25	5810-002-0921	ND
2017-10-25	5810-003-0856	210.0 ppb
2017-11-07	5810-001-1013	370.0 ppb
2017-11-07	5810-002-1003	31.0 ppb
2017-11-07	5810-003-1027	330.0 ppb
2017-12-07	5810-001-1150	150.0 ppb
2017-12-07	5810-002-1137	33.0 ppb
2017-12-07	5810-003-1034	500.0 ppb
2018-01-02	5810-001-1026	190.0 ppb
2018-01-02	5810-002-1015	23.0 ppb
2018-01-02	5810-003-1144	170.0 ppb
2018-02-06	5810-001-1017	230.0 ppb
2018-02-06	5810-002-0958	ND
2018-02-06	5810-003-1007	170.0 ppb
2018-03-01	5810-001-0908	210.0 ppb
2018-03-01	5810-002-0922	ND
2018-03-01	5810-003-0915	160.0 ppb
2018-04-03	5810-001-1145	220.0 ppb
2018-04-03	5810-002-1150	ND
2018-04-03	5810-003-1137	170.0 ppb
2018-04-30	5810-024-1445	440.0 ppb
2018-04-30	5810-046-1410	200.0 ppb
2018-04-30	5810-047-1410	180.0 ppb
2018-04-30	5810-048-1432	320.0 ppb
2018-05-09	5810-001-0905	130.0 ppb
2018-05-09	5810-002-0950	30.0 ppb
2018-05-25	5810-003-1022	270.0 ppb
2018-06-12	5810-001-1450	160.0 ppb
2018-06-12	5810-002-1452	ND
2018-06-12	5810-003-1445	240.0 ppb
2018-06-12	5810-024-1500	490.0 ppb
2018-07-10	5810-001-0955	240.0 ppb
2018-07-10	5810-002-0925	ND
2018-07-10	5810-003-1020	140.0 ppb
2018-07-25	5810-009-1000	44.0 ppb
2018-07-25	5810-010-1025	220.0 ppb
2018-08-01	5810-001-1002	310.0 ppb
2018-08-01	5810-002-0941	120.0 ppb
2018-08-01	5810-003-1017	140.0 ppb
2018-08-01	5810-014-0854	ND
2018-08-01	5810-026-0854	220.0 ppb
2018-09-19	5810-001-0911	300.0 ppb
2018-09-19	5810-014-1031	ND
2018-09-19	5810-026-1030	250.0 ppb
2018-10-03	5810-014-1003	ND
2018-10-03	5810-026-1006	200.0 ppb
2018-11-07	5810-014-0940	ND
2018-11-07	5810-026-0940	210.0 ppb
2018-12-04	5810-013-1646	ND
2018-12-04	5810-027-1646	72.0 ppb
2018-12-05	5810-014-0957	ND
2018-12-05	5810-026-0948	210.0 ppb
2018-12-11	5810-013-1238	ND
2018-12-11	5810-050-1218	42.0 ppb
2018-12-12	5810-014-0959	ND
2018-12-12	5810-026-1000	200.0 ppb
2018-12-18	5810-013-1026	ND
2018-12-18	5810-014-1217	ND
2018-12-18	5810-026-1215	190.0 ppb
2018-12-18	5810-027-1008	20.0 ppb
2018-12-27	5810-013-1309	ND
2018-12-27	5810-014-1630	ND
2018-12-27	5810-026-1622	210.0 ppb
2018-12-27	5810-027-1258	76.0 ppb
2019-01-02	5810-013-1105	ND
2019-01-02	5810-014-1729	ND
2019-01-02	5810-026-1727	200.0 ppb
2019-01-02	5810-027-1105	60.0 ppb
2019-01-08	5810-013-1018	ND
2019-01-08	5810-014-1202	ND
2019-01-08	5810-026-1200	200.0 ppb
2019-01-08	5810-027-1016	91.0 ppb
2019-01-15	5810-013-1049	ND
2019-01-15	5810-014-1236	ND
2019-01-15	5810-026-1230	200.0 ppb
2019-01-15	5810-027-1047	200.0 ppb
2019-01-21	5810-013-1324	ND
2019-01-21	5810-014-1547	ND
2019-01-21	5810-026-1541	210.0 ppb
2019-01-21	5810-027-1320	100.0 ppb
2019-01-29	5810-014-0937	30.0 ppb
2019-01-29	5810-026-0937	210.0 ppb
2019-02-01	5810-013-1200	ND
2019-02-01	5810-027-1155	160.0 ppb
2019-02-07	5810-013-1505	ND
2019-02-07	5810-027-1500	99.0 ppb
2019-02-08	5810-014-1118	ND
2019-02-08	5810-026-1116	200.0 ppb
2019-02-12	5810-013-1047	ND
2019-02-12	5810-027-1044	82.0 ppb
2019-02-13	5810-014-0957	ND
2019-02-13	5810-026-0957	210.0 ppb
2019-02-20	5810-013-0957	ND
2019-02-20	5810-014-1339	ND
2019-02-20	5810-026-1330	200.0 ppb
2019-02-20	5810-027-0954	330.0 ppb
2019-02-26	5810-013-0946	ND
2019-02-26	5810-014-1139	ND
2019-02-26	5810-026-1135	200.0 ppb
2019-02-26	5810-027-0943	100.0 ppb
2019-03-06	5810-013-1017	ND
2019-03-06	5810-014-1129	ND
2019-03-06	5810-026-1128	200.0 ppb
2019-03-06	5810-027-1020	110.0 ppb
2019-03-12	5810-013-0920	ND
2019-03-12	5810-014-1106	ND
2019-03-12	5810-026-1104	210.0 ppb
2019-03-12	5810-027-0914	83.0 ppb
2019-03-19	5810-013-0943	ND
2019-03-19	5810-014-1135	ND
2019-03-19	5810-026-1133	210.0 ppb
2019-03-19	5810-027-0940	75.0 ppb
2019-03-26	5810-013-0918	ND
2019-03-26	5810-014-1125	ND
2019-03-26	5810-026-1123	230.0 ppb
2019-03-26	5810-027-0915	67.0 ppb
2019-04-02	5810-013-0942	ND
2019-04-02	5810-014-1407	ND
2019-04-02	5810-026-1407	230.0 ppb
2019-04-02	5810-027-0939	64.0 ppb
2019-04-08	5810-026-1158	210.0 ppb
2019-04-09	5810-013-1535	ND
2019-04-09	5810-014-1200	ND
2019-04-09	5810-027-1529	78.0 ppb
2019-04-16	5810-013-1004	ND
2019-04-16	5810-014-1257	ND
2019-04-16	5810-026-1255	220.0 ppb
2019-04-16	5810-027-1004	82.0 ppb
2019-04-23	5810-013-0933	ND
2019-04-23	5810-014-1314	ND
2019-04-23	5810-026-1210	210.0 ppb
2019-04-23	5810-027-0930	71.0 ppb
2019-04-30	5810-013-0913	ND
2019-04-30	5810-014-1146	ND
2019-04-30	5810-026-1142	210.0 ppb
2019-04-30	5810-027-0906	71.0 ppb
2019-05-07	5810-013-0930	ND
2019-05-07	5810-014-1058	ND
2019-05-07	5810-026-1055	210.0 ppb
2019-05-07	5810-027-0924	67.0 ppb
2019-05-13	5810-014-1150	ND
2019-05-13	5810-026-1148	220.0 ppb
2019-05-14	5810-013-0939	ND
2019-05-14	5810-027-0933	78.0 ppb
2019-05-21	5810-013-0855	ND
2019-05-21	5810-014-1057	ND
2019-05-21	5810-026-1050	210.0 ppb
2019-05-21	5810-027-0850	67.0 ppb
2019-05-28	5810-013-1056	ND
2019-05-28	5810-014-1213	ND
2019-05-28	5810-026-1211	200.0 ppb
2019-05-28	5810-027-1053	86.0 ppb
2019-06-03	5810-014-0944	ND
2019-06-03	5810-026-0942	220.0 ppb
2019-06-04	5810-013-0851	ND
2019-06-04	5810-027-0846	76.0 ppb
2019-06-11	5810-014-0914	ND
2019-06-11	5810-026-0909	220.0 ppb
2019-06-12	5810-013-1025	ND
2019-06-12	5810-027-1010	56.0 ppb
2019-06-17	5810-014-1604	ND
2019-06-17	5810-026-1602	220.0 ppb
2019-06-18	5810-013-1124	ND
2019-06-18	5810-027-1121	70.0 ppb
2019-06-25	5810-013-1120	ND
2019-06-25	5810-014-0957	ND
2019-06-25	5810-026-0954	220.0 ppb
2019-06-25	5810-027-1115	63.0 ppb
2019-07-02	5810-013-1438	ND
2019-07-02	5810-027-1433	64.0 ppb
2019-07-03	5810-014-0840	ND
2019-07-03	5810-026-0838	230.0 ppb
2019-07-09	5810-013-1015	ND
2019-07-09	5810-014-0854	ND
2019-07-09	5810-026-0852	230.0 ppb
2019-07-09	5810-027-1013	60.0 ppb
2019-07-16	5810-013-1011	ND
2019-07-16	5810-027-1002	56.0 ppb
2019-07-17	5810-014-1005	ND
2019-07-17	5810-026-1003	230.0 ppb
2019-07-23	5810-013-0942	ND
2019-07-23	5810-014-0843	ND
2019-07-23	5810-026-0840	230.0 ppb
2019-07-23	5810-027-0939	55.0 ppb
2019-07-30	5810-013-1458	ND
2019-07-30	5810-014-0852	ND
2019-07-30	5810-026-0848	230.0 ppb
2019-07-30	5810-027-1453	51.0 ppb
2019-08-06	5810-013-0947	ND
2019-08-06	5810-014-0852	ND
2019-08-06	5810-026-0847	230.0 ppb
2019-08-06	5810-027-0944	55.0 ppb
2019-08-13	5810-013-1123	ND
2019-08-13	5810-027-1120	48.0 ppb
2019-08-14	5810-014-1001	ND
2019-08-14	5810-026-0959	240.0 ppb
2019-08-20	5810-013-1032	ND
2019-08-20	5810-014-1234	ND
2019-08-20	5810-026-1232	210.0 ppb
2019-08-20	5810-027-1031	58.0 ppb
2019-08-27	5810-013-1145	ND
2019-08-27	5810-027-1143	48.0 ppb
2019-08-28	5810-014-0950	ND
2019-08-28	5810-026-0939	220.0 ppb
2019-09-03	5810-013-1154	ND
2019-09-03	5810-027-1152	44.0 ppb
2019-09-04	5810-014-0948	ND
2019-09-04	5810-026-0944	220.0 ppb
2019-09-10	5810-013-1114	ND
2019-09-10	5810-014-0857	ND
2019-09-10	5810-026-0855	230.0 ppb
2019-09-10	5810-027-1108	50.0 ppb
2019-09-17	5810-013-1550	ND
2019-09-17	5810-027-1548	47.0 ppb
2019-09-18	5810-014-0847	ND
2019-09-18	5810-026-0848	230.0 ppb
2019-09-24	5810-013-0944	ND
2019-09-24	5810-014-0850	ND
2019-09-24	5810-026-0848	220.0 ppb
2019-09-24	5810-027-0942	44.0 ppb
2019-10-01	5810-013-1241	ND
2019-10-01	5810-027-1209	50.0 ppb
2019-10-02	5810-014-0837	ND
2019-10-02	5810-026-0827	210.0 ppb
2019-11-05	5810-013-0926	ND
2019-11-05	5810-014-0827	ND
2019-11-05	5810-026-0825	210.0 ppb
2019-11-05	5810-027-0924	46.0 ppb
2019-12-03	5810-013-1318	ND
2019-12-03	5810-027-1315	41.0 ppb
2019-12-04	5810-014-0852	ND
2019-12-04	5810-026-0850	220.0 ppb