Manganese
Hawkins Water Co-cal Water Service (puc)
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.
168
Samples
0
Samples exceeding legal limit (MCL)
76
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 222.7 ppb | 26 | 12 | ND - 530.0 ppb |
| 2019 | 237.6 ppb | 25 | 12 | ND - 540.0 ppb |
| 2020 | 238.5 ppb | 26 | 15 | ND - 510.0 ppb |
| 2021 | 265.9 ppb | 22 | 18 | ND - 520.0 ppb |
| 2022 | 174.2 ppb | 33 | 29 | ND - 570.0 ppb |
| 2023 | 171.8 ppb | 36 | 22 | ND - 500.0 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 |
|---|---|---|
| 2018-01-15 | CA4900546_001_001-201801151300 | 473.6 ppb |
| 2018-01-15 | CA4900546_003_003-201801151255 | ND |
| 2018-02-08 | CA4900546_003_003-201802080930 | ND |
| 2018-02-08 | CA4900546_001_001-201802080925 | 522.7 ppb |
| 2018-03-13 | CA4900546_001_001-201803131350 | 520.0 ppb |
| 2018-03-13 | CA4900546_003_003-201803131355 | ND |
| 2018-03-14 | CA4900546_003_003-201803141250 | ND |
| 2018-04-12 | CA4900546_003_003-201804121115 | ND |
| 2018-04-12 | CA4900546_001_001-201804121120 | 440.0 ppb |
| 2018-04-12 | CA4900546_003_003-201804121115 | ND |
| 2018-05-08 | CA4900546_003_003-201805081345 | ND |
| 2018-05-08 | CA4900546_001_001-201805081340 | 450.8 ppb |
| 2018-06-12 | CA4900546_001_001-201806121155 | 483.1 ppb |
| 2018-06-12 | CA4900546_003_003-201806121200 | ND |
| 2018-07-10 | CA4900546_003_003-201807101310 | ND |
| 2018-07-10 | CA4900546_001_001-201807101315 | 479.2 ppb |
| 2018-08-20 | CA4900546_001_001-201808201148 | 466.0 ppb |
| 2018-08-20 | CA4900546_003_003-201808201255 | ND |
| 2018-09-12 | CA4900546_001_001-201809121135 | 485.9 ppb |
| 2018-09-12 | CA4900546_003_003-201809121140 | ND |
| 2018-10-13 | CA4900546_003_003-201810131245 | ND |
| 2018-10-13 | CA4900546_001_001-201810131235 | 416.6 ppb |
| 2018-11-14 | CA4900546_003_003-201811141235 | ND |
| 2018-11-14 | CA4900546_001_001-201811141230 | 522.2 ppb |
| 2018-12-26 | CA4900546_001_001-201812261405 | 530.0 ppb |
| 2018-12-26 | CA4900546_003_003-201812261410 | ND |
| 2019-01-28 | CA4900546_003_003-201901281015 | ND |
| 2019-01-28 | CA4900546_001_001-201901281017 | 540.0 ppb |
| 2019-02-25 | CA4900546_001_001-201902251335 | 450.0 ppb |
| 2019-02-25 | CA4900546_003_003-201902251337 | ND |
| 2019-03-19 | CA4900546_003_003-201903191115 | ND |
| 2019-03-26 | CA4900546_001_001-201903261215 | 500.0 ppb |
| 2019-03-26 | CA4900546_003_003-201903261220 | ND |
| 2019-04-10 | CA4900546_001_001-201904101210 | 470.0 ppb |
| 2019-04-10 | CA4900546_003_003-201904101215 | ND |
| 2019-05-27 | CA4900546_001_001-201905271335 | 500.0 ppb |
| 2019-05-27 | CA4900546_003_003-201905271340 | ND |
| 2019-06-24 | CA4900546_001_001-201906241040 | 470.0 ppb |
| 2019-06-24 | CA4900546_003_003-201906241045 | ND |
| 2019-07-14 | CA4900546_003_003-201907141240 | ND |
| 2019-07-14 | CA4900546_001_001-201907141245 | 490.0 ppb |
| 2019-08-12 | CA4900546_001_001-201908121105 | 520.0 ppb |
| 2019-08-12 | CA4900546_003_003-201908121110 | ND |
| 2019-09-24 | CA4900546_001_001-201909241130 | 460.0 ppb |
| 2019-09-24 | CA4900546_003_003-201909241125 | ND |
| 2019-10-06 | CA4900546_001_001-201910060805 | 520.0 ppb |
| 2019-10-06 | CA4900546_003_003-201910060810 | ND |
| 2019-11-24 | CA4900546_001_001-201911240835 | 500.0 ppb |
| 2019-11-24 | CA4900546_003_003-201911240830 | ND |
| 2019-12-15 | CA4900546_003_003-201912150820 | ND |
| 2019-12-15 | CA4900546_001_001-201912150815 | 520.0 ppb |
| 2020-01-23 | CA4900546_001_001-202001231355 | 510.0 ppb |
| 2020-01-23 | CA4900546_003_003-202001231400 | ND |
| 2020-02-16 | CA4900546_001_001-202002160800 | 500.0 ppb |
| 2020-02-16 | CA4900546_003_003-202002160805 | ND |
| 2020-03-18 | CA4900546_001_001-202003181305 | 480.0 ppb |
| 2020-03-18 | CA4900546_003_003-202003181310 | ND |
| 2020-04-06 | CA4900546_001_001-202004061100 | 440.0 ppb |
| 2020-04-06 | CA4900546_003_003-202004061110 | ND |
| 2020-05-29 | CA4900546_001_001-202005291240 | 460.0 ppb |
| 2020-05-29 | CA4900546_003_003-202005291245 | ND |
| 2020-06-08 | CA4900546_001_001-202006081415 | 470.0 ppb |
| 2020-06-08 | CA4900546_003_003-202006081410 | 100.0 ppb |
| 2020-06-25 | CA4900546_001_001-202006251400 | 490.0 ppb |
| 2020-06-25 | CA4900546_003_003-202006251410 | ND |
| 2020-07-20 | CA4900546_003_003-202007201225 | ND |
| 2020-07-20 | CA4900546_001_001-202007201220 | 440.0 ppb |
| 2020-07-20 | CA4900546_003_003-202007201215 | ND |
| 2020-08-13 | CA4900546_003_003-202008130700 | ND |
| 2020-08-13 | CA4900546_001_001-202008130700 | 460.0 ppb |
| 2020-08-18 | CA4900546_001_001-202008181240 | 450.0 ppb |
| 2020-09-22 | CA4900546_001_001-202009220740 | 490.0 ppb |
| 2020-09-22 | CA4900546_003_003-202009220730 | 32.0 ppb |
| 2020-10-13 | CA4900546_001_001-202010131240 | 450.0 ppb |
| 2020-10-13 | CA4900546_003_003-202010131235 | ND |
| 2020-11-10 | CA4900546_001_001-202011101200 | 430.0 ppb |
| 2020-11-10 | CA4900546_003_003-202011101205 | ND |
| 2021-01-13 | CA4900546_003_003-202101131030 | 120.0 ppb |
| 2021-01-13 | CA4900546_001_001-202101131035 | 490.0 ppb |
| 2021-02-09 | CA4900546_003_003-202102091145 | ND |
| 2021-02-09 | CA4900546_001_001-202102091140 | 480.0 ppb |
| 2021-03-11 | CA4900546_001_001-202103110750 | 480.0 ppb |
| 2021-03-11 | CA4900546_003_003-202103110755 | ND |
| 2021-04-08 | CA4900546_003_003-202104080745 | ND |
| 2021-04-08 | CA4900546_001_001-202104080750 | 440.0 ppb |
| 2021-05-12 | CA4900546_001_001-202105120810 | 450.0 ppb |
| 2021-05-12 | CA4900546_003_003-202105120800 | 42.0 ppb |
| 2021-06-08 | CA4900546_003_003-202106081050 | ND |
| 2021-06-08 | CA4900546_001_001-202106081040 | 440.0 ppb |
| 2021-07-05 | CA4900546_003_003-202107050745 | 430.0 ppb |
| 2021-07-05 | CA4900546_001_001-202107050750 | 440.0 ppb |
| 2021-09-13 | CA4900546_001_001-202109130805 | 500.0 ppb |
| 2021-09-13 | CA4900546_003_003-202109130810 | 2.70 ppb |
| 2021-10-05 | CA4900546_001_001-202110050815 | 520.0 ppb |
| 2021-10-05 | CA4900546_003_003-202110050810 | 6.20 ppb |
| 2021-11-03 | CA4900546_003_003-202111030950 | 6.30 ppb |
| 2021-11-03 | CA4900546_001_001-202111030940 | 510.0 ppb |
| 2021-12-08 | CA4900546_001_001-202112080805 | 490.0 ppb |
| 2021-12-08 | CA4900546_003_003-202112080810 | 3.10 ppb |
| 2022-01-12 | CA4900546_001_001-202201120750 | 19.0 ppb |
| 2022-01-12 | CA4900546_003_003-202201120745 | 37.0 ppb |
| 2022-02-08 | CA4900546_003_003-202202081214 | 14.0 ppb |
| 2022-02-08 | CA4900546_001_001-202202081220 | 480.0 ppb |
| 2022-03-08 | CA4900546_001_001-202203080810 | 440.0 ppb |
| 2022-03-08 | CA4900546_003_003-202203080815 | 2.50 ppb |
| 2022-04-12 | CA4900546_001_001-202204120815 | 450.0 ppb |
| 2022-04-12 | CA4900546_003_003-202204120810 | 12.0 ppb |
| 2022-04-12 | CA4900546_003_003-202204120810 | 7.70 ppb |
| 2022-05-09 | CA4900546_001_001-202205090815 | 450.0 ppb |
| 2022-05-09 | CA4900546_003_003-202205090800 | 70.9 ppb |
| 2022-05-09 | CA4900546_003_003-202205090800 | 12.0 ppb |
| 2022-05-18 | CA4900546_003_003-202205180805 | 2.80 ppb |
| 2022-05-18 | CA4900546_001_001-202205180810 | 450.0 ppb |
| 2022-06-13 | CA4900546_003_003-202206130815 | 2.50 ppb |
| 2022-06-13 | CA4900546_001_001-202206130810 | 460.0 ppb |
| 2022-06-13 | CA4900546_003_003-202206130815 | 2.30 ppb |
| 2022-07-12 | CA4900546_001_001-202207120830 | 460.0 ppb |
| 2022-07-12 | CA4900546_003_003-202207120840 | 4.90 ppb |
| 2022-07-12 | CA4900546_003_003-202207120840 | 7.40 ppb |
| 2022-08-09 | CA4900546_003_003-202208090820 | 7.00 ppb |
| 2022-08-09 | CA4900546_001_001-202208090815 | 570.0 ppb |
| 2022-08-09 | CA4900546_003_003-202208090820 | 5.10 ppb |
| 2022-09-13 | CA4900546_003_003-202209130815 | ND |
| 2022-09-13 | CA4900546_001_001-202209130830 | 450.0 ppb |
| 2022-10-05 | CA4900546_003_003-202210050810 | 9.00 ppb |
| 2022-10-11 | CA4900546_003_003-202210110900 | ND |
| 2022-10-11 | CA4900546_001_001-202210110845 | 440.0 ppb |
| 2022-11-27 | CA4900546_003_003-202211270740 | ND |
| 2022-11-27 | CA4900546_001_001-202211270745 | 420.0 ppb |
| 2022-12-13 | CA4900546_003_003-202212130825 | 1.000 ppb |
| 2022-12-13 | CA4900546_001_001-202212130830 | 460.0 ppb |
| 2022-12-13 | CA4900546_003_003-202212130825 | ND |
| 2023-01-12 | CA4900546_001_001-202301121400 | 440.0 ppb |
| 2023-01-12 | CA4900546_003_003-202301121405 | ND |
| 2023-01-12 | CA4900546_003_003-202301121405 | 1.30 ppb |
| 2023-02-14 | CA4900546_003_003-202302140815 | ND |
| 2023-02-14 | CA4900546_003_003-202302140845 | ND |
| 2023-02-14 | CA4900546_001_001-202302140830 | 450.0 ppb |
| 2023-03-16 | CA4900546_001_001-202303160755 | 460.0 ppb |
| 2023-03-16 | CA4900546_003_003-202303160750 | 2.10 ppb |
| 2023-03-16 | CA4900546_003_003-202303160750 | ND |
| 2023-04-10 | CA4900546_001_001-202304100745 | 460.0 ppb |
| 2023-04-10 | CA4900546_003_003-202304100740 | 2.10 ppb |
| 2023-04-10 | CA4900546_003_003-202304100740 | ND |
| 2023-05-16 | CA4900546_003_003-202305160805 | 3.40 ppb |
| 2023-05-16 | CA4900546_001_001-202305160810 | 460.0 ppb |
| 2023-05-16 | CA4900546_003_003-202305160805 | ND |
| 2023-06-15 | CA4900546_003_003-202306150755 | ND |
| 2023-06-15 | CA4900546_001_001-202306150750 | 500.0 ppb |
| 2023-06-15 | CA4900546_003_003-202306150755 | 1.60 ppb |
| 2023-07-16 | CA4900546_003_003-202307160815 | ND |
| 2023-07-16 | CA4900546_003_003-202307160815 | 3.40 ppb |
| 2023-07-16 | CA4900546_001_001-202307160810 | 450.0 ppb |
| 2023-08-10 | CA4900546_003_003-202308100750 | ND |
| 2023-08-10 | CA4900546_001_001-202308100755 | 430.0 ppb |
| 2023-08-29 | CA4900546_001_001-202308290810 | 410.0 ppb |
| 2023-09-13 | CA4900546_003_003-202309130810 | ND |
| 2023-09-13 | CA4900546_001_001-202309130805 | 420.0 ppb |
| 2023-09-13 | CA4900546_003_003-202309130810 | 5.40 ppb |
| 2023-10-09 | CA4900546_003_003-202310090750 | 4.00 ppb |
| 2023-10-26 | CA4900546_001_001-202310261300 | 390.0 ppb |
| 2023-10-26 | CA4900546_003_003-202310261258 | ND |
| 2023-11-15 | CA4900546_001_001-202311151155 | 460.0 ppb |
| 2023-11-15 | CA4900546_003_003-202311151200 | ND |
| 2023-12-04 | CA4900546_003_003-202312041405 | ND |
| 2023-12-04 | CA4900546_001_001-202312041407 | 410.0 ppb |
| 2023-12-16 | CA4900546_003_003-202312160800 | ND |
| 2023-12-16 | CA4900546_001_001-202312160805 | 420.0 ppb |