Mercury (inorganic)
Monroe Twp MUA
Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.
152
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 |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.267 ppb | 42 | 34 | ND - 0.911 ppb |
| 2015 | 0.365 ppb | 36 | 28 | ND - 1.90 ppb |
| 2016 | 0.332 ppb | 19 | 12 | ND - 0.990 ppb |
| 2017 | 0.234 ppb | 23 | 10 | ND - 0.900 ppb |
| 2018 | 0.288 ppb | 16 | 7 | ND - 1.000 ppb |
| 2019 | 0.231 ppb | 16 | 6 | ND - 1.000 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 1.2 ppb
The EWG Health Guideline of 1.2 ppb for mercury (inorganic) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 2 ppb
The legal limit for inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-08 | L4894465-2 | 0.531 ppb |
| 2014-01-08 | L4861511-2 | ND |
| 2014-01-15 | L4869364-3 | 0.482 ppb |
| 2014-01-15 | L4869364-6 | ND |
| 2014-01-15 | L4901190-3 | 0.0420 ppb |
| 2014-01-15 | L4901190-6 | 0.0760 ppb |
| 2014-02-04 | L3330823-2 | 0.477 ppb |
| 2014-02-04 | L4900195-2 | ND |
| 2014-03-05 | L4770090-2 | 0.367 ppb |
| 2014-03-05 | L4941106-2 | ND |
| 2014-04-02 | L4737684-2 | 0.329 ppb |
| 2014-04-02 | L4974861-2 | ND |
| 2014-04-09 | L4251497-1 | ND |
| 2014-05-07 | L5011070-3 | 0.807 ppb |
| 2014-05-07 | L5011071-3 | 0.0910 ppb |
| 2014-05-07 | L4893067-2 | 0.0380 ppb |
| 2014-06-04 | L5055997-2 | 0.198 ppb |
| 2014-06-18 | L4974863-1 | 0.901 ppb |
| 2014-06-18 | L4974863-3 | ND |
| 2014-06-18 | L4974863-5 | 0.0110 ppb |
| 2014-06-18 | L4974863-7 | 0.0590 ppb |
| 2014-06-18 | L4974863-9 | 0.0520 ppb |
| 2014-06-18 | L4974863-11 | ND |
| 2014-07-16 | L5112475-3 | 0.911 ppb |
| 2014-07-16 | L5112475-6 | 0.0620 ppb |
| 2014-07-16 | L5112475-11 | 0.412 ppb |
| 2014-07-16 | L5112475-13 | 0.336 ppb |
| 2014-07-16 | L5112475-9 | 0.147 ppb |
| 2014-08-06 | L5158343-8 | 0.873 ppb |
| 2014-08-06 | L5158343-2 | 0.114 ppb |
| 2014-09-10 | L5202850-8 | 0.829 ppb |
| 2014-09-10 | L5202850-10 | 0.0680 ppb |
| 2014-10-08 | L5240118-8 | 0.795 ppb |
| 2014-10-08 | L5240118-2 | 0.0500 ppb |
| 2014-10-08 | L5240118-4 | 0.0560 ppb |
| 2014-10-08 | L5240118-6 | 0.178 ppb |
| 2014-11-05 | L5284698-2 | 0.0710 ppb |
| 2014-11-05 | L5284698-4 | 0.0830 ppb |
| 2014-11-19 | L5292114-2 | 0.848 ppb |
| 2014-12-03 | L5320702-8 | 0.842 ppb |
| 2014-12-03 | L5320702-2 | 0.0310 ppb |
| 2014-12-03 | L5320702-4 | 0.0320 ppb |
| 2015-01-07 | L5364526-8 | 0.849 ppb |
| 2015-01-07 | L5364526-2 | 0.0680 ppb |
| 2015-01-07 | L5364526-4 | 0.0750 ppb |
| 2015-01-07 | L5364526-6 | 0.180 ppb |
| 2015-02-04 | L5406334-8 | 0.976 ppb |
| 2015-02-04 | L5406334-2 | 0.0360 ppb |
| 2015-02-04 | L5406334-4 | 0.0160 ppb |
| 2015-03-04 | L5450244-8 | 0.932 ppb |
| 2015-03-04 | L5450244-4 | 0.0310 ppb |
| 2015-04-01 | L5489116-8 | 0.875 ppb |
| 2015-04-01 | L5489116-2 | 0.0430 ppb |
| 2015-04-01 | L5489116-4 | 0.0320 ppb |
| 2015-04-01 | L5489116-6 | 0.139 ppb |
| 2015-04-15 | L5489175-3 | ND |
| 2015-05-06 | L5576820-3 | ND |
| 2015-07-08 | L5637461-8 | 0.801 ppb |
| 2015-07-08 | L5637461-2 | ND |
| 2015-07-08 | L5637461-4 | ND |
| 2015-07-08 | L5637461-6 | 0.605 ppb |
| 2015-07-08 | L5637533-3 | ND |
| 2015-08-12 | L5707283-8 | 0.864 ppb |
| 2015-08-12 | L5707283-2 | ND |
| 2015-08-12 | L5707283-4 | ND |
| 2015-08-12 | L5707283-6 | 0.163 ppb |
| 2015-09-09 | L5760284-8 | 0.874 ppb |
| 2015-09-09 | L5760284-2 | 0.0720 ppb |
| 2015-09-09 | L5760284-4 | 0.0910 ppb |
| 2015-09-09 | L5760284-6 | 0.527 ppb |
| 2015-12-09 | L5908499-8 | 0.795 ppb |
| 2015-12-09 | L5908499-2 | 0.0320 ppb |
| 2015-12-09 | L5908499-4 | ND |
| 2015-12-09 | L5908499-6 | 0.773 ppb |
| 2015-12-09 | L5908499-7 | 1.90 ppb |
| 2015-12-09 | L5908499-1 | 0.0900 ppb |
| 2015-12-09 | L5908499-3 | 0.342 ppb |
| 2015-12-09 | L5908499-5 | 0.952 ppb |
| 2016-03-02 | L6065294-8 | 0.777 ppb |
| 2016-03-02 | L6065294-2 | ND |
| 2016-03-02 | L6065294-4 | ND |
| 2016-03-02 | L6065294-6 | 0.669 ppb |
| 2016-04-06 | L6125454-8 | 0.777 ppb |
| 2016-04-06 | L6125454-4 | 0.0300 ppb |
| 2016-04-06 | L6125454-6 | 0.828 ppb |
| 2016-04-13 | L6125516-2 | 0.0550 ppb |
| 2016-07-06 | L6313227-2 | 0.790 ppb |
| 2016-07-06 | L6313308-2 | ND |
| 2016-07-06 | L6313227-4 | ND |
| 2016-07-06 | L6313227-6 | 0.570 ppb |
| 2016-10-12 | L6466142-8 | 0.590 ppb |
| 2016-10-12 | L6466142-2 | ND |
| 2016-10-12 | L6466142-4 | ND |
| 2016-10-12 | L6466142-7 | 0.990 ppb |
| 2016-10-12 | L6466142-1 | ND |
| 2016-10-12 | L6466142-3 | 0.170 ppb |
| 2016-12-21 | L6605364-2 | 0.0610 ppb |
| 2017-01-11 | L6597066-8 | 0.640 ppb |
| 2017-01-11 | L6597066-2 | ND |
| 2017-01-11 | L6597066-4 | ND |
| 2017-03-21 | L6581802-2 | ND |
| 2017-04-20 | L6718598-8 | 0.710 ppb |
| 2017-04-20 | L6718598-2 | ND |
| 2017-04-20 | L6718598-4 | ND |
| 2017-04-20 | L6718598-6 | 0.0550 ppb |
| 2017-07-12 | L6853457-8 | 0.710 ppb |
| 2017-07-12 | L6853457-2 | ND |
| 2017-07-12 | L6853457-4 | ND |
| 2017-07-12 | L6853457-6 | 0.280 ppb |
| 2017-10-11 | 3800327 | 0.900 ppb |
| 2017-10-11 | 3800324 | ND |
| 2017-10-11 | 3800325 | 0.800 ppb |
| 2017-10-11 | 3800326 | 0.400 ppb |
| 2017-10-18 | L6963413-5 | 0.710 ppb |
| 2017-10-18 | L6963414-1 | ND |
| 2017-10-18 | L6963414-3 | ND |
| 2017-10-18 | L6963413-7 | 0.170 ppb |
| 2017-10-18 | L6963413-3 | ND |
| 2017-10-18 | L6963413-1 | ND |
| 2017-11-29 | L6977979-1 | ND |
| 2018-01-17 | L6994578-3 | 0.730 ppb |
| 2018-01-17 | L6994578-7 | ND |
| 2018-01-17 | L6994578-1 | ND |
| 2018-01-17 | L6994578-5 | 0.280 ppb |
| 2018-04-11 | 380411232 | 0.800 ppb |
| 2018-04-11 | 380411236 | ND |
| 2018-04-11 | 380411238 | ND |
| 2018-04-11 | 380411234 | ND |
| 2018-07-12 | 380712232.1 | 0.800 ppb |
| 2018-07-12 | 380712231.1 | ND |
| 2018-07-12 | 380712233.1 | ND |
| 2018-07-12 | 380712241.1 | 0.400 ppb |
| 2018-10-09 | 381009715.2 | 1.000 ppb |
| 2018-10-09 | 381009714.2 | 0.600 ppb |
| 2018-10-09 | 381009709.2 | ND |
| 2018-10-09 | 381009713.2 | ND |
| 2019-01-16 | 390116753.1 | 1.000 ppb |
| 2019-01-16 | 390116754.1 | ND |
| 2019-01-16 | 390116751.1 | 0.200 ppb |
| 2019-01-16 | 390116752.1 | 0.500 ppb |
| 2019-04-09 | 390409733.1 | 0.700 ppb |
| 2019-04-09 | 390409734.1 | ND |
| 2019-04-09 | 390409735.1 | ND |
| 2019-04-09 | 390409732.1 | ND |
| 2019-07-19 | 390719720.1 | 0.600 ppb |
| 2019-07-19 | 390719724.1 | ND |
| 2019-07-19 | 390719725.1 | ND |
| 2019-07-19 | 390719726.1 | ND |
| 2019-10-22 | 391022708.2 | 0.700 ppb |
| 2019-10-22 | 391022709.2 | ND |
| 2019-10-22 | 391022710.2 | ND |
| 2019-10-22 | 391022711.2 | ND |