Manganese
California Water Service Company - Hermosa / Redondo Beach
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.
106
Samples
0
Samples exceeding legal limit (MCL)
1
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 10.3 ppb | 26 | 22 | ND - 165.9 ppb |
| 2015 | 0.560 ppb | 25 | 15 | ND - 2.63 ppb |
| 2016 | ND | 22 | 0 | ND |
| 2017 | ND | 11 | 0 | ND |
| 2018 | 0.227 ppb | 11 | 2 | ND - 1.50 ppb |
| 2019 | 4.77 ppb | 7 | 3 | ND - 31.0 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 | 5701-009-1236 | 1.60 ppb |
| 2014-01-08 | 5701-015-1335 | 0.400 ppb |
| 2014-02-05 | 5701-009-1200 | 0.167 ppb |
| 2014-02-05 | 5701-015-1236 | 0.355 ppb |
| 2014-03-05 | 5701-009-1325 | 2.36 ppb |
| 2014-03-05 | 5701-015-1402 | 0.730 ppb |
| 2014-04-16 | 5810-009-0952 | ND |
| 2014-04-16 | 5810-015-1019 | ND |
| 2014-05-21 | 5701-009-1330 | 0.401 ppb |
| 2014-05-21 | 5701-015-1236 | 1.52 ppb |
| 2014-06-11 | 5701-009-1021 | 1.12 ppb |
| 2014-06-11 | 5701-015-0945 | 0.281 ppb |
| 2014-07-09 | 5701-009-1116 | 0.641 ppb |
| 2014-07-09 | 5701-015-1050 | 0.989 ppb |
| 2014-08-06 | 5701-009-1437 | 0.536 ppb |
| 2014-08-06 | 5701-015-0940 | 0.538 ppb |
| 2014-09-10 | 5701-009-1412 | 0.669 ppb |
| 2014-09-10 | 5701-015-1255 | 0.674 ppb |
| 2014-10-08 | 5701-009-1022 | 0.520 ppb |
| 2014-10-08 | 5701-015-0932 | 0.200 ppb |
| 2014-11-05 | 5701-009-0941 | 165.9 ppb |
| 2014-11-05 | 5701-015-0957 | 86.3 ppb |
| 2014-11-19 | 9590-009-1540 | ND |
| 2014-11-19 | 9590-015-1410 | ND |
| 2014-12-03 | 5701-009-1053 | 1.53 ppb |
| 2014-12-03 | 5701-015-0915 | 0.229 ppb |
| 2015-01-07 | 5701-009-1207 | 0.489 ppb |
| 2015-01-07 | 5701-015-1532 | 2.63 ppb |
| 2015-02-04 | 5701-009-1350 | 0.781 ppb |
| 2015-02-04 | 5701-015-1316 | 2.48 ppb |
| 2015-03-04 | 5701-009-1000 | 0.832 ppb |
| 2015-03-04 | 5701-015-0905 | ND |
| 2015-04-01 | 5701-009-1020 | 0.0750 ppb |
| 2015-04-01 | 5701-015-1128 | 0.890 ppb |
| 2015-05-06 | 5701-009-1148 | 1.17 ppb |
| 2015-05-06 | 5701-015-1308 | 0.382 ppb |
| 2015-05-28 | 9590-016-1400 | ND |
| 2015-06-03 | 5701-009-1305 | 1.09 ppb |
| 2015-06-03 | 5701-015-1225 | 0.344 ppb |
| 2015-07-15 | 5701-009-1040 | 0.921 ppb |
| 2015-07-15 | 5701-015-1130 | 0.646 ppb |
| 2015-08-05 | 5701-009-1215 | 0.739 ppb |
| 2015-08-06 | 5701-015-1005 | 0.532 ppb |
| 2015-09-02 | 5701-009-1028 | ND |
| 2015-09-02 | 5701-015-0950 | ND |
| 2015-10-21 | 5701-009-1015 | ND |
| 2015-10-21 | 5701-015-1135 | ND |
| 2015-11-18 | 5701-009-1012 | ND |
| 2015-11-18 | 5701-015-1127 | ND |
| 2015-12-09 | 5701-009-1342 | ND |
| 2015-12-09 | 5701-015-1301 | ND |
| 2016-01-06 | 5701-009-1014 | ND |
| 2016-01-06 | 5701-015-1027 | ND |
| 2016-02-03 | 5701-009-0943 | ND |
| 2016-02-03 | 5701-015-1335 | ND |
| 2016-03-09 | 5701-009-0925 | ND |
| 2016-03-09 | 5701-015-1005 | ND |
| 2016-05-12 | 5701-009-1433 | ND |
| 2016-05-12 | 5701-015-0958 | ND |
| 2016-06-15 | 5701-009-0932 | ND |
| 2016-06-15 | 5701-015-1015 | ND |
| 2016-07-21 | 5701-015-0920 | ND |
| 2016-07-26 | 5701-009-1240 | ND |
| 2016-08-17 | 5701-009-1044 | ND |
| 2016-08-17 | 5701-015-1023 | ND |
| 2016-09-27 | 5701-009-1049 | ND |
| 2016-09-27 | 5701-015-1034 | ND |
| 2016-10-12 | 5701-009-1317 | ND |
| 2016-10-12 | 5701-015-1417 | ND |
| 2016-11-16 | 5701-009-0930 | ND |
| 2016-11-16 | 5701-015-1027 | ND |
| 2016-12-08 | 5701-009-1207 | ND |
| 2016-12-08 | 5701-015-1302 | ND |
| 2017-01-11 | 5701-009-1007 | ND |
| 2017-01-11 | 5701-015-0940 | ND |
| 2017-02-08 | 5701-015-1252 | ND |
| 2017-03-08 | 5701-015-1101 | ND |
| 2017-06-14 | 5701-015-1333 | ND |
| 2017-07-12 | 5701-015-1043 | ND |
| 2017-08-09 | 5701-015-1320 | ND |
| 2017-09-06 | 5701-015-1308 | ND |
| 2017-10-11 | 5701-015-1413 | ND |
| 2017-11-08 | 5701-015-1045 | ND |
| 2017-12-06 | 5701-015-1337 | ND |
| 2018-01-10 | 5701-015-1025 | ND |
| 2018-02-07 | 5701-015-1325 | ND |
| 2018-03-08 | 5810-015-1129 | ND |
| 2018-04-04 | 5810-015-1328 | ND |
| 2018-05-02 | 5701-015-1354 | ND |
| 2018-06-07 | 5701-015-1346 | ND |
| 2018-09-19 | 201809190653 | 1.50 ppb |
| 2018-12-06 | 201812060673 | 1.000 ppb |
| 2018-12-19 | 5810-009-1130 | ND |
| 2018-12-19 | 5810-015-1132 | ND |
| 2018-12-19 | 9590-015-1135 | ND |
| 2019-03-20 | 201903200662 | 1.60 ppb |
| 2019-03-26 | 5810-015-1300 | ND |
| 2019-03-27 | 5810-009-1305 | ND |
| 2019-06-06 | 201906060676 | 0.760 ppb |
| 2019-12-26 | 5810-009-1140 | ND |
| 2019-12-26 | 5810-009-1235 | ND |
| 2019-12-26 | 5810-015-1055 | 31.0 ppb |
| 2020-07-22 | 202007220443 | 3.90 ppb |
| 2020-08-26 | 202008260616 | 3.10 ppb |
| 2020-12-08 | 202012080484 | 1.20 ppb |
| 2020-12-08 | 202012080492 | 10.00 ppb |