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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0280001 , Town of Mayersville

29 of the 57 analytes this system has been tested for have been detected at least once, across 474 samples on record.

The other 28 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 474 samples on record, detections range from December 13, 1993 to December 3, 2025. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for Town of Mayersville, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 92 of 96 results Dec 13, 1993 Jul 12, 2023
TTHM 2950 Organic Chemical 74 of 79 results Jun 7, 2004 Dec 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 72 of 80 results Jun 7, 2004 Dec 3, 2025
Lead 1030 Inorganic Chemical 60 of 96 results Dec 13, 1993 Jul 12, 2023
Chloroform 2941 Organic Chemical 37 of 42 results May 15, 2006 Dec 17, 2019
Dichloroacetic Acid 2451 Organic Chemical 34 of 38 results Oct 11, 2007 Dec 15, 2020
Trichloroacetic Acid 2452 Organic Chemical 31 of 38 results Oct 11, 2007 Dec 15, 2020
Bromodichloromethane 2943 Organic Chemical 31 of 42 results May 15, 2006 Dec 17, 2019
Barium 1010 Inorganic Chemical 28 of 28 results Sep 16, 2003 Dec 3, 2025
Fluoride 1025 Inorganic Chemical 28 of 28 results Sep 16, 2003 Dec 3, 2025
Chromium 1020 Inorganic Chemical 20 of 28 results Sep 16, 2003 Dec 3, 2025
Monochloroacetic Acid 2450 Organic Chemical 16 of 38 results Feb 7, 2008 Jun 27, 2018
Dibromochloromethane 2944 Organic Chemical 13 of 42 results Aug 14, 2006 Dec 17, 2019
Selenium 1045 Inorganic Chemical 12 of 28 results Apr 12, 2004 Apr 16, 2008
Arsenic 1005 Inorganic Chemical 10 of 28 results Apr 12, 2004 Dec 3, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 15 results Mar 8, 2012 Oct 2, 2012
Nickel 1036 Inorganic Chemical 7 of 28 results Mar 14, 2005 Oct 15, 2019
P-Dichlorobenzene 2969 Organic Chemical 6 of 66 results Aug 30, 2007 Dec 4, 2008
Xylenes, Total 2955 Organic Chemical 6 of 66 results Jul 27, 2004 Oct 17, 2006
Monobromoacetic Acid 2453 Organic Chemical 5 of 38 results Feb 7, 2008 Dec 15, 2020
Carbon Tetrachloride 2982 Organic Chemical 5 of 66 results Oct 26, 2004 Jun 19, 2007
Ethylbenzene 2992 Organic Chemical 5 of 66 results Jul 27, 2004 Oct 26, 2004
Nitrite 1041 Inorganic Chemical 3 of 66 results Apr 24, 2024 Apr 24, 2024
O-Dichlorobenzene 2968 Organic Chemical 3 of 66 results Sep 11, 2018 Sep 11, 2018
Sodium 1052 Inorganic Chemical 2 of 2 results Mar 16, 2021 Feb 14, 2024
Dibromoacetic Acid 2454 Organic Chemical 2 of 38 results Feb 7, 2008 Dec 19, 2019
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 66 results May 27, 2008 May 27, 2008
Nitrate 1040 Inorganic Chemical 2 of 66 results May 27, 2008 May 27, 2008
Cyanide 1024 Inorganic Chemical 1 of 30 results Apr 12, 2004 Apr 12, 2004

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 131–140 of 474 samples, newest first — collected June 14, 2017 to June 13, 2018. The summary above covers all 474.

27 results from the 10 samples listed here: 4 detected, 23 not detected. Across the whole record it is 617 of 2,714. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 1 sampling point below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Town of Mayersville, every result from 131 to 140 of 474 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jun 13, 2018 12:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180614-036CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 13, 2018 12:05, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Jun 13, 2018 11:56
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180614-035CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 13, 2018 11:56, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Jun 13, 2018 12:18
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180614-026CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 13, 2018 12:18, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2017 – Dec 31, 2019
Collected
Feb 13, 2018 13:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
180214-049NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:05, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:05, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:05, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Feb 13, 2018 13:18
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180214-043NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:18, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:18, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:18, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Feb 13, 2018 13:26
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180214-042NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:26, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:26, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 13, 2018 13:26, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Nov 14, 2017 01:50
Sampling point
SMT Tank Farm Rd- St Peter Church
Sample type
Routine
Lab sample
171115-001TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 14, 2017 01:50, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 14, 2017 01:50, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 14, 2017 01:50, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 14, 2017 01:50, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Nov 14, 2017 01:50, sampling point SMT TTHM 2950 Jan 1, 2017 – Dec 31, 2017
Collected
Nov 14, 2017 01:00
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
171115-001HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 14, 2017 01:00, sampling point SMH Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 14, 2017 01:00, sampling point SMH Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 14, 2017 01:00, sampling point SMH Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 14, 2017 01:00, sampling point SMH Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 14, 2017 01:00, sampling point SMH Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Nov 14, 2017 01:00, sampling point SMH Total Haloacetic Acids (Haa5) 2456 Jan 1, 2017 – Dec 31, 2017
Collected
Jun 14, 2017 08:35
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170615-045PB
Laboratory
MSDH Lab
0.051 mg/l , sample collected Jun 14, 2017 08:35, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0032 mg/l , sample collected Jun 14, 2017 08:35, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jun 14, 2017 07:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170615-040PB
Laboratory
MSDH Lab
0.1791 mg/l , sample collected Jun 14, 2017 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0096 mg/l , sample collected Jun 14, 2017 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017

Routine (10).