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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 271–280 of 474 samples, newest first — collected November 2, 2009 to December 28, 2009. The summary above covers all 474.

55 results from the 10 samples listed here: 34 detected, 21 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.

Units in this table

TTHM is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

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 271 to 280 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
Dec 28, 2009
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
091229-002TH
Laboratory
MSDH Lab
55.3 ug/l , sample collected Dec 28, 2009, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 28, 2009, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
10.5 ug/l , sample collected Dec 28, 2009, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
2.17 ug/l , sample collected Dec 28, 2009, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
67.97 ug/l , sample collected Dec 28, 2009, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Dec 28, 2009
Sampling point
SM1 Tank Farm Rd- St Peter Church
Sample type
Routine
Lab sample
091229-001TH
Laboratory
MSDH Lab
47.3 ug/l , sample collected Dec 28, 2009, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 28, 2009, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
7.98 ug/l , sample collected Dec 28, 2009, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.83 ug/l , sample collected Dec 28, 2009, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
57.11 ug/l , sample collected Dec 28, 2009, sampling point SM1 TTHM 2950 EPA method 524.2 Not recorded
Collected
Dec 28, 2009
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
091229-002HA
Laboratory
MSDH Lab
0.008 mg/l , sample collected Dec 28, 2009, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.024 mg/l , sample collected Dec 28, 2009, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.031 mg/l , sample collected Dec 28, 2009, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Dec 28, 2009, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Dec 28, 2009, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.06 mg/l , sample collected Dec 28, 2009, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 Not recorded
Collected
Dec 28, 2009
Sampling point
SM1 Tank Farm Rd- St Peter Church
Sample type
Routine
Lab sample
091229-001HA
Laboratory
MSDH Lab
0.006 mg/l , sample collected Dec 28, 2009, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.018 mg/l , sample collected Dec 28, 2009, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.022 mg/l , sample collected Dec 28, 2009, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Dec 28, 2009, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Dec 28, 2009, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.04 mg/l , sample collected Dec 28, 2009, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 Not recorded
Collected
Nov 19, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
091120-004HA
Laboratory
MSDH Lab
0.004 mg/l , sample collected Nov 19, 2009, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.007 mg/l , sample collected Nov 19, 2009, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.037 mg/l , sample collected Nov 19, 2009, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 19, 2009, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 19, 2009, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.04 mg/l , sample collected Nov 19, 2009, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Oct 1, 2009 – Dec 31, 2009
Collected
Nov 19, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
091120-004TH
Laboratory
MSDH Lab
89.1 ug/l , sample collected Nov 19, 2009, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 19, 2009, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
5.41 ug/l , sample collected Nov 19, 2009, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 19, 2009, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
94.51 ug/l , sample collected Nov 19, 2009, sampling point MRT000 TTHM 2950 EPA method 524.2 Oct 1, 2009 – Dec 31, 2009
Collected
Nov 2, 2009
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
091103-036HA
Laboratory
MSDH Lab
0.003 mg/l , sample collected Nov 2, 2009, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. , sample collected Nov 2, 2009, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 Not recorded
Collected
Nov 2, 2009
Sampling point
SM1 Tank Farm Rd- St Peter Church
Sample type
Routine
Lab sample
091103-035HA
Laboratory
MSDH Lab
0.005 mg/l , sample collected Nov 2, 2009, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.049 mg/l , sample collected Nov 2, 2009, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.048 mg/l , sample collected Nov 2, 2009, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.1 mg/l , sample collected Nov 2, 2009, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 Not recorded
Collected
Nov 2, 2009
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
091103-016TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Nov 2, 2009, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Nov 2, 2009
Sampling point
SM1 Tank Farm Rd- St Peter Church
Sample type
Routine
Lab sample
091103-015TH
Laboratory
MSDH Lab
147 ug/l , sample collected Nov 2, 2009, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
7.97 ug/l , sample collected Nov 2, 2009, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 2, 2009, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
154.97 ug/l , sample collected Nov 2, 2009, sampling point SM1 TTHM 2950 EPA method 524.2 Not recorded

Routine (10).