Manganese
City of Colusa
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.
127
Samples
0
Samples exceeding legal limit (MCL)
13
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 69.2 ppb | 20 | 20 | 40.0 ppb - 120.0 ppb |
| 2019 | 67.5 ppb | 20 | 20 | 20.0 ppb - 120.0 ppb |
| 2020 | 92.5 ppb | 28 | 28 | 30.0 ppb - 450.0 ppb |
| 2021 | 62.1 ppb | 19 | 19 | 40.0 ppb - 90.0 ppb |
| 2022 | 74.4 ppb | 20 | 20 | 39.0 ppb - 133.0 ppb |
| 2023 | 61.9 ppb | 20 | 19 | ND - 133.0 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2018-01-02 | CA0610002_004_004-201801020800 | 74.8 ppb |
| 2018-02-12 | CA0610002_002_002-201802120740 | 68.1 ppb |
| 2018-02-12 | CA0610002_003_003-201802120800 | 98.7 ppb |
| 2018-03-13 | CA0610002_006_006-201803130735 | 87.9 ppb |
| 2018-03-13 | CA0610002_005_005-201803130725 | 40.5 ppb |
| 2018-06-11 | CA0610002_006_006-201806110900 | 40.0 ppb |
| 2018-06-12 | CA0610002_003_003-201806120745 | 80.0 ppb |
| 2018-06-12 | CA0610002_002_002-201806120735 | 70.0 ppb |
| 2018-06-12 | CA0610002_004_004-201806120715 | 80.0 ppb |
| 2018-06-12 | CA0610002_005_005-201806120700 | 40.0 ppb |
| 2018-08-07 | CA0610002_005_005-201808070900 | 40.0 ppb |
| 2018-08-07 | CA0610002_006_006-201808070920 | 40.0 ppb |
| 2018-08-07 | CA0610002_004_004-201808070830 | 110.0 ppb |
| 2018-08-13 | CA0610002_003_003-201808130840 | 62.9 ppb |
| 2018-08-13 | CA0610002_002_002-201808130920 | 71.5 ppb |
| 2018-11-19 | CA0610002_006_006-201811190900 | 40.0 ppb |
| 2018-12-17 | CA0610002_004_004-201812170720 | 120.0 ppb |
| 2018-12-17 | CA0610002_005_005-201812170745 | 40.0 ppb |
| 2018-12-18 | CA0610002_003_003-201812180710 | 110.0 ppb |
| 2018-12-18 | CA0610002_002_002-201812180700 | 70.0 ppb |
| 2019-01-14 | CA0610002_004_004-201901140740 | 100.0 ppb |
| 2019-02-20 | CA0610002_002_002-201902200745 | 70.0 ppb |
| 2019-02-20 | CA0610002_003_003-201902200800 | 120.0 ppb |
| 2019-03-18 | CA0610002_005_005-201903180745 | 20.0 ppb |
| 2019-03-18 | CA0610002_006_006-201903180755 | 40.0 ppb |
| 2019-04-22 | CA0610002_003_003-201904220730 | 80.0 ppb |
| 2019-04-22 | CA0610002_002_002-201904220710 | 70.0 ppb |
| 2019-06-10 | CA0610002_006_006-201906100810 | 40.0 ppb |
| 2019-06-10 | CA0610002_004_004-201906100710 | 100.0 ppb |
| 2019-07-23 | CA0610002_006_006-201907230910 | 40.0 ppb |
| 2019-07-23 | CA0610002_004_004-201907230855 | 80.0 ppb |
| 2019-08-06 | CA0610002_005_005-201908060900 | 50.0 ppb |
| 2019-08-26 | CA0610002_005_005-201908260930 | 40.0 ppb |
| 2019-09-23 | CA0610002_002_002-201909230855 | 70.0 ppb |
| 2019-09-23 | CA0610002_003_003-201909230750 | 80.0 ppb |
| 2019-10-07 | CA0610002_006_006-201910070825 | 40.0 ppb |
| 2019-10-07 | CA0610002_005_005-201910070800 | 50.0 ppb |
| 2019-12-16 | CA0610002_004_004-201912160850 | 90.0 ppb |
| 2019-12-31 | CA0610002_002_002-201912310910 | 60.0 ppb |
| 2019-12-31 | CA0610002_003_003-201912310845 | 110.0 ppb |
| 2020-01-09 | CA0610002_005_005-202001090930 | 40.0 ppb |
| 2020-01-27 | CA0610002_006_006-202001270920 | 40.0 ppb |
| 2020-03-02 | CA0610002_004_004-202003020905 | 170.0 ppb |
| 2020-03-17 | CA0610002_003_003-202003170815 | 80.0 ppb |
| 2020-03-17 | CA0610002_002_002-202003170845 | 60.0 ppb |
| 2020-04-07 | CA0610002_002_002-202004070800 | 60.0 ppb |
| 2020-04-07 | CA0610002_003_003-202004070840 | 80.0 ppb |
| 2020-04-20 | CA0610002_004_004-202004200950 | 90.0 ppb |
| 2020-04-27 | CA0610002_005_005-202004270840 | 40.0 ppb |
| 2020-04-30 | CA0610002_006_006-202004300800 | 450.0 ppb |
| 2020-05-04 | 118212P | 70.0 ppb |
| 2020-05-05 | 118214P | 57.0 ppb |
| 2020-05-05 | 118215P | 44.0 ppb |
| 2020-09-01 | CA0610002_006_006-202009010800 | 30.0 ppb |
| 2020-09-08 | CA0610002_005_005-202009080910 | 50.0 ppb |
| 2020-09-08 | CA0610002_004_004-202009080850 | 90.0 ppb |
| 2020-09-15 | CA0610002_002_002-202009150850 | 70.0 ppb |
| 2020-09-15 | CA0610002_003_003-202009150910 | 160.0 ppb |
| 2020-11-02 | 122355P | 62.0 ppb |
| 2020-11-02 | 122356P | 66.0 ppb |
| 2020-11-02 | 122357P | 75.0 ppb |
| 2020-11-02 | 122358P | 50.0 ppb |
| 2020-11-02 | 122359P | 36.0 ppb |
| 2020-12-07 | CA0610002_006_006-202012071000 | 330.0 ppb |
| 2020-12-07 | CA0610002_004_004-202012070840 | 80.0 ppb |
| 2020-12-07 | CA0610002_005_005-202012070915 | 40.0 ppb |
| 2020-12-08 | CA0610002_003_003-202012080815 | 100.0 ppb |
| 2020-12-08 | CA0610002_002_002-202012080835 | 70.0 ppb |
| 2021-03-16 | CA0610002_003_003-202103160910 | 90.0 ppb |
| 2021-03-16 | CA0610002_005_005-202103160940 | 40.0 ppb |
| 2021-03-16 | CA0610002_002_002-202103160850 | 60.0 ppb |
| 2021-03-16 | CA0610002_004_004-202103161005 | 80.0 ppb |
| 2021-06-07 | CA0610002_002_002-202106070830 | 70.0 ppb |
| 2021-06-07 | CA0610002_003_003-202106070740 | 60.0 ppb |
| 2021-06-07 | CA0610002_005_005-202106070900 | 40.0 ppb |
| 2021-06-07 | CA0610002_006_006-202106070910 | 40.0 ppb |
| 2021-06-07 | CA0610002_004_004-202106070810 | 90.0 ppb |
| 2021-07-20 | CA0610002_002_002-202107200825 | 70.0 ppb |
| 2021-07-20 | CA0610002_003_003-202107200800 | 60.0 ppb |
| 2021-07-20 | CA0610002_006_006-202107200835 | 40.0 ppb |
| 2021-07-20 | CA0610002_004_004-202107200725 | 80.0 ppb |
| 2021-07-20 | CA0610002_005_005-202107200740 | 40.0 ppb |
| 2021-10-14 | CA0610002_004_004-202110140800 | 70.0 ppb |
| 2021-10-14 | CA0610002_005_005-202110140815 | 40.0 ppb |
| 2021-10-18 | CA0610002_003_003-202110180725 | 90.0 ppb |
| 2021-10-18 | CA0610002_006_006-202110180810 | 50.0 ppb |
| 2021-10-18 | CA0610002_002_002-202110180700 | 70.0 ppb |
| 2022-02-15 | CA0610002_003_003-202202150730 | 90.0 ppb |
| 2022-02-15 | CA0610002_002_002-202202150800 | 60.0 ppb |
| 2022-02-15 | CA0610002_004_004-202202150835 | 80.0 ppb |
| 2022-02-15 | CA0610002_005_005-202202150745 | 50.0 ppb |
| 2022-02-15 | CA0610002_006_006-202202150855 | 90.0 ppb |
| 2022-05-17 | CA0610002_002_002-202205170700 | 70.0 ppb |
| 2022-05-17 | CA0610002_004_004-202205170630 | 80.0 ppb |
| 2022-05-17 | CA0610002_006_006-202205170820 | 70.0 ppb |
| 2022-05-17 | CA0610002_005_005-202205170800 | 50.0 ppb |
| 2022-05-17 | CA0610002_003_003-202205170720 | 100.0 ppb |
| 2022-08-09 | CA0610002_005_005-202208090730 | 40.0 ppb |
| 2022-08-09 | CA0610002_003_003-202208090700 | 90.0 ppb |
| 2022-08-09 | CA0610002_006_006-202208090715 | 50.0 ppb |
| 2022-08-09 | CA0610002_002_002-202208090815 | 90.0 ppb |
| 2022-08-09 | CA0610002_004_004-202208090630 | 80.0 ppb |
| 2022-10-18 | CA0610002_002_002-202210180925 | 78.0 ppb |
| 2022-10-18 | CA0610002_003_003-202210181000 | 133.0 ppb |
| 2022-10-18 | CA0610002_004_004-202210180850 | 104.0 ppb |
| 2022-10-18 | CA0610002_005_005-202210180750 | 43.0 ppb |
| 2022-10-18 | CA0610002_006_006-202210180805 | 39.0 ppb |
| 2023-02-22 | CA0610002_004_004-202302220755 | 118.0 ppb |
| 2023-02-22 | CA0610002_005_005-202302220700 | 40.0 ppb |
| 2023-02-22 | CA0610002_006_006-202302220730 | 60.0 ppb |
| 2023-02-28 | CA0610002_002_002-202302280720 | 52.0 ppb |
| 2023-02-28 | CA0610002_003_003-202302280710 | 60.0 ppb |
| 2023-05-09 | CA0610002_002_002-202305090730 | 51.0 ppb |
| 2023-05-09 | CA0610002_003_003-202305090735 | 63.0 ppb |
| 2023-05-09 | CA0610002_004_004-202305090720 | 75.0 ppb |
| 2023-05-09 | CA0610002_005_005-202305090745 | 52.0 ppb |
| 2023-05-09 | CA0610002_006_006-202305090815 | 39.0 ppb |
| 2023-07-10 | CA0610002_005_005-202307100710 | 52.0 ppb |
| 2023-07-10 | CA0610002_004_004-202307100755 | 70.0 ppb |
| 2023-07-10 | CA0610002_002_002-202307100820 | 84.0 ppb |
| 2023-07-10 | CA0610002_003_003-202307100850 | 133.0 ppb |
| 2023-07-10 | CA0610002_006_006-202307100745 | ND |
| 2023-10-09 | CA0610002_006_006-202310090915 | 39.7 ppb |
| 2023-10-09 | CA0610002_005_005-202310090755 | 37.2 ppb |
| 2023-10-09 | CA0610002_002_002-202310091030 | 60.0 ppb |
| 2023-10-09 | CA0610002_003_003-202310090850 | 98.5 ppb |
| 2023-10-09 | CA0610002_004_004-202310090725 | 54.4 ppb |