Manganese
Aromas Water 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.
126
Samples
0
Samples exceeding legal limit (MCL)
36
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 90.0 ppb | 20 | 9 | ND - 300.0 ppb |
| 2019 | 58.8 ppb | 21 | 8 | ND - 245.0 ppb |
| 2020 | 79.0 ppb | 23 | 10 | ND - 309.0 ppb |
| 2021 | 66.1 ppb | 21 | 9 | ND - 263.0 ppb |
| 2022 | 65.1 ppb | 20 | 8 | ND - 259.0 ppb |
| 2023 | 65.0 ppb | 21 | 9 | ND - 226.0 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 |
|---|---|---|
| 2018-01-10 | CA3510004_010_010-201801101030 | ND |
| 2018-01-10 | CA3510004_004_004-201801100852 | 300.0 ppb |
| 2018-01-10 | CA3510004_007_007-201801101035 | 128.0 ppb |
| 2018-02-05 | CA3510004_010_010-201802050830 | ND |
| 2018-03-05 | CA3510004_010_010-201803050752 | ND |
| 2018-03-05 | CA3510004_007_007-201803050750 | 100.0 ppb |
| 2018-03-05 | CA3510004_004_004-201803051020 | 299.0 ppb |
| 2018-04-02 | CA3510004_004_004-201804021046 | 267.0 ppb |
| 2018-04-02 | CA3510004_010_010-201804021102 | ND |
| 2018-06-04 | CA3510004_010_010-201806040952 | ND |
| 2018-07-02 | CA3510004_004_004-201807020915 | 262.0 ppb |
| 2018-07-02 | CA3510004_007_007-201807021210 | 83.0 ppb |
| 2018-07-02 | CA3510004_010_010-201807021206 | ND |
| 2018-08-06 | CA3510004_010_010-201808061009 | ND |
| 2018-09-10 | CA3510004_010_010-201809101120 | ND |
| 2018-10-01 | CA3510004_004_004-201810011119 | 246.0 ppb |
| 2018-10-01 | CA3510004_007_007-201810011211 | 114.0 ppb |
| 2018-10-01 | CA3510004_010_010-201810011215 | ND |
| 2018-11-05 | CA3510004_010_010-201811050825 | ND |
| 2018-12-03 | CA3510004_010_010-201812030915 | ND |
| 2019-01-07 | CA3510004_007_007-201901070820 | 120.0 ppb |
| 2019-01-07 | CA3510004_004_004-201901071020 | 226.0 ppb |
| 2019-01-07 | CA3510004_010_010-201901070825 | ND |
| 2019-02-05 | CA3510004_010_010-201902050803 | ND |
| 2019-03-04 | CA3510004_010_010-201903041036 | ND |
| 2019-04-03 | CA3510004_010_010-201904030955 | ND |
| 2019-04-03 | CA3510004_004_004-201904031212 | 188.0 ppb |
| 2019-04-03 | CA3510004_007_007-201904030945 | 93.0 ppb |
| 2019-05-06 | CA3510004_010_010-201905061106 | ND |
| 2019-06-03 | CA3510004_010_010-201906031131 | ND |
| 2019-07-01 | CA3510004_004_004-201907011041 | 245.0 ppb |
| 2019-07-01 | CA3510004_007_007-201907011301 | 80.0 ppb |
| 2019-07-01 | CA3510004_011_011-201907010824 | ND |
| 2019-07-01 | CA3510004_010_010-201907011309 | ND |
| 2019-08-05 | CA3510004_010_010-201908050957 | ND |
| 2019-09-09 | CA3510004_010_010-201909090933 | ND |
| 2019-10-07 | CA3510004_004_004-201910071120 | 198.0 ppb |
| 2019-10-07 | CA3510004_007_007-201910070946 | 85.0 ppb |
| 2019-10-07 | CA3510004_010_010-201910070953 | ND |
| 2019-11-04 | CA3510004_010_010-201911041044 | ND |
| 2019-12-09 | CA3510004_010_010-201912091035 | ND |
| 2020-01-06 | CA3510004_004_004-202001061031 | 219.0 ppb |
| 2020-01-06 | CA3510004_007_007-202001061214 | 104.0 ppb |
| 2020-01-06 | CA3510004_010_010-202001061208 | ND |
| 2020-02-03 | CA3510004_010_010-202002030918 | ND |
| 2020-03-04 | CA3510004_010_010-202003040843 | ND |
| 2020-04-06 | CA3510004_010_010-202004061036 | ND |
| 2020-04-06 | CA3510004_004_004-202004060915 | 230.0 ppb |
| 2020-04-06 | CA3510004_007_007-202004061046 | 99.0 ppb |
| 2020-05-04 | CA3510004_010_010-202005040935 | ND |
| 2020-06-01 | CA3510004_010_010-202006010934 | ND |
| 2020-07-06 | CA3510004_004_004-202007061154 | 252.0 ppb |
| 2020-07-06 | CA3510004_010_010-202007060824 | ND |
| 2020-07-06 | CA3510004_007_007-202007060818 | 109.0 ppb |
| 2020-08-03 | CA3510004_010_010-202008031043 | ND |
| 2020-09-08 | CA3510004_010_010-202009081059 | ND |
| 2020-10-05 | CA3510004_007_007-202010051036 | 104.0 ppb |
| 2020-10-05 | CA3510004_010_010-202010051041 | ND |
| 2020-10-05 | CA3510004_004_004-202010051150 | 273.0 ppb |
| 2020-10-26 | CA3510004_011_011-202010260858 | ND |
| 2020-10-26 | CA3510004_004_004-202010261008 | 309.0 ppb |
| 2020-10-26 | CA3510004_007_007-202010260955 | 117.0 ppb |
| 2020-11-02 | CA3510004_010_010-202011021033 | ND |
| 2020-12-07 | CA3510004_010_010-202012070945 | ND |
| 2021-01-04 | CA3510004_004_004-202101041106 | 198.0 ppb |
| 2021-01-04 | CA3510004_010_010-202101040920 | ND |
| 2021-01-04 | CA3510004_007_007-202101040916 | 84.0 ppb |
| 2021-02-01 | CA3510004_010_010-202102011115 | ND |
| 2021-03-01 | CA3510004_010_010-202103010850 | ND |
| 2021-04-05 | CA3510004_004_004-202104051036 | 222.0 ppb |
| 2021-04-05 | CA3510004_010_010-202104051016 | ND |
| 2021-04-05 | CA3510004_007_007-202104051014 | 95.0 ppb |
| 2021-05-03 | CA3510004_010_010-202105030808 | ND |
| 2021-06-07 | CA3510004_010_010-202106070918 | ND |
| 2021-07-12 | CA3510004_010_010-202107121110 | ND |
| 2021-07-12 | CA3510004_004_004-202107121155 | 240.0 ppb |
| 2021-07-12 | CA3510004_007_007-202107121105 | 92.0 ppb |
| 2021-07-12 | CA3510004_007_007-202107121105 | 92.0 ppb |
| 2021-08-02 | CA3510004_010_010-202108020900 | ND |
| 2021-09-13 | CA3510004_010_010-202109131158 | ND |
| 2021-10-04 | CA3510004_004_004-202110041144 | 263.0 ppb |
| 2021-10-04 | CA3510004_007_007-202110041115 | 102.0 ppb |
| 2021-10-04 | CA3510004_010_010-202110041310 | ND |
| 2021-11-01 | CA3510004_010_010-202111011010 | ND |
| 2021-12-06 | CA3510004_010_010-202112061124 | ND |
| 2022-01-03 | CA3510004_004_004-202201031150 | 247.0 ppb |
| 2022-01-03 | CA3510004_007_007-202201031021 | 93.0 ppb |
| 2022-01-03 | CA3510004_010_010-202201031025 | ND |
| 2022-02-07 | CA3510004_010_010-202202071035 | ND |
| 2022-03-07 | CA3510004_010_010-202203071108 | ND |
| 2022-04-04 | CA3510004_004_004-202204041120 | 233.0 ppb |
| 2022-04-04 | CA3510004_007_007-202204040928 | 89.0 ppb |
| 2022-04-04 | CA3510004_010_010-202204040933 | ND |
| 2022-05-02 | CA3510004_010_010-202205021026 | ND |
| 2022-06-06 | CA3510004_010_010-202206060935 | ND |
| 2022-07-11 | CA3510004_004_004-202207111211 | 259.0 ppb |
| 2022-07-11 | CA3510004_007_007-202207110930 | 91.0 ppb |
| 2022-07-11 | CA3510004_010_010-202207110940 | ND |
| 2022-08-01 | CA3510004_010_010-202208011100 | ND |
| 2022-09-12 | CA3510004_010_010-202209120945 | ND |
| 2022-10-03 | CA3510004_004_004-202210031038 | 204.0 ppb |
| 2022-10-03 | CA3510004_007_007-202210031010 | 86.0 ppb |
| 2022-10-03 | CA3510004_010_010-202210031014 | ND |
| 2022-11-07 | CA3510004_010_010-202211070936 | ND |
| 2022-12-05 | CA3510004_010_010-202212050930 | ND |
| 2023-01-11 | CA3510004_004_004-202301111114 | 216.0 ppb |
| 2023-01-11 | CA3510004_007_007-202301111052 | 98.0 ppb |
| 2023-01-11 | CA3510004_010_010-202301111058 | ND |
| 2023-02-06 | CA3510004_010_010-202302061028 | ND |
| 2023-03-06 | CA3510004_010_010-202303060941 | ND |
| 2023-04-03 | CA3510004_004_004-202304031150 | 210.0 ppb |
| 2023-04-03 | CA3510004_011_011-202304030850 | 104.0 ppb |
| 2023-04-03 | CA3510004_010_010-202304030923 | ND |
| 2023-04-03 | CA3510004_007_007-202304030923 | 98.0 ppb |
| 2023-05-01 | CA3510004_010_010-202305010959 | ND |
| 2023-06-05 | CA3510004_010_010-202306051034 | ND |
| 2023-07-03 | CA3510004_007_007-202307030907 | 101.0 ppb |
| 2023-07-03 | CA3510004_004_004-202307031033 | 218.0 ppb |
| 2023-07-03 | CA3510004_010_010-202307030912 | ND |
| 2023-08-07 | CA3510004_010_010-202308070933 | ND |
| 2023-09-11 | CA3510004_010_010-202309110917 | ND |
| 2023-10-02 | CA3510004_004_004-202310021013 | 226.0 ppb |
| 2023-10-02 | CA3510004_010_010-202310021112 | ND |
| 2023-10-02 | CA3510004_007_007-202310021036 | 95.0 ppb |
| 2023-11-06 | CA3510004_010_010-202311061012 | ND |
| 2023-12-04 | CA3510004_010_010-202312041307 | ND |