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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

MS0600007 , City of Marks

38 of the 72 analytes this system has been tested for have been detected at least once, across 258 samples on record.

The other 34 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 258 samples on record, detections range from October 20, 2003 to July 2, 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 City of Marks, 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 168 of 168 results Aug 7, 2007 Jul 2, 2025
Lead 1030 Inorganic Chemical 94 of 169 results Aug 7, 2007 Jul 2, 2025
Barium 1010 Inorganic Chemical 10 of 10 results Oct 20, 2003 Apr 14, 2025
Fluoride 1025 Inorganic Chemical 10 of 12 results Oct 20, 2003 Apr 14, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 9 of 21 results Jun 7, 2004 Mar 21, 2012
Nitrate 1040 Inorganic Chemical 9 of 21 results Jun 7, 2004 Mar 21, 2012
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 18 results Sep 4, 2007 Aug 23, 2023
TTHM 2950 Organic Chemical 7 of 18 results Sep 4, 2007 Aug 23, 2023
Chromium 1020 Inorganic Chemical 6 of 10 results Apr 11, 2005 Apr 14, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Sodium 1052 Inorganic Chemical 4 of 4 results May 20, 2010 Dec 13, 2023
Nickel 1036 Inorganic Chemical 3 of 10 results Apr 11, 2005 Apr 14, 2025
Sulfate 1055 Inorganic Chemical 3 of 3 results Oct 20, 2003 May 20, 2010
Dichloroacetic Acid 2451 Organic Chemical 2 of 12 results Sep 6, 2013 Dec 7, 2016
Chloroform 2941 Organic Chemical 2 of 13 results Sep 5, 2013 Dec 7, 2016
Calcium 1016 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Chloride 1017 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Iron 1028 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Magnesium 1031 Inorganic Chemical 2 of 2 results May 20, 2010 May 20, 2010
Residue, Total, Filterable 1057 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Carbon Dioxide 1901 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Alkalinity, Total 1927 Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Calculated Sodium NACA Water Quality 2 of 2 results May 20, 2010 May 20, 2010
PH, Field Result PHFD Water Quality 2 of 2 results May 20, 2010 May 20, 2010
Nitrite 1041 Inorganic Chemical 1 of 21 results Oct 13, 2021 Oct 13, 2021
Monochloroacetic Acid 2450 Organic Chemical 1 of 12 results Sep 6, 2013 Sep 6, 2013
Trichloroacetic Acid 2452 Organic Chemical 1 of 12 results Sep 6, 2013 Sep 6, 2013
Monobromoacetic Acid 2453 Organic Chemical 1 of 12 results Sep 6, 2013 Sep 6, 2013
Bromodichloromethane 2943 Organic Chemical 1 of 13 results Sep 5, 2013 Sep 5, 2013
Manganese 1032 Inorganic Chemical 1 of 1 result May 20, 2010 May 20, 2010
Potassium 1042 Inorganic Chemical 1 of 1 result May 20, 2010 May 20, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result May 20, 2010 May 20, 2010
Color 1905 Water Quality 1 of 1 result May 20, 2010 May 20, 2010
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result May 20, 2010 May 20, 2010
Cadmium 1015 Inorganic Chemical 1 of 10 results Apr 11, 2005 Apr 11, 2005
Selenium 1045 Inorganic Chemical 1 of 10 results Apr 11, 2005 Apr 11, 2005
Dichloromethane 2964 Organic Chemical 1 of 7 results Aug 23, 2004 Aug 23, 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 121–130 of 258 samples, newest first — collected May 17, 2016 to May 18, 2016. The summary above covers all 258.

20 results from the 10 samples listed here: 15 detected, 5 not detected. Across the whole record it is 372 of 874. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for City of Marks, every result from 121 to 130 of 258 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
May 18, 2016 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-030PB
Laboratory
MSDH Lab
0.0042 mg/l , sample collected May 18, 2016 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2016 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 18, 2016 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-029PB
Laboratory
MSDH Lab
0.0056 mg/l , sample collected May 18, 2016 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
0.0012 mg/l , sample collected May 18, 2016 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 18, 2016 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-028PB
Laboratory
MSDH Lab
0.0017 mg/l , sample collected May 18, 2016 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2016 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 18, 2016
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-027PB
Laboratory
MSDH Lab
0.0021 mg/l , sample collected May 18, 2016, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2016, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 18, 2016
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-025PB
Laboratory
MSDH Lab
0.018 mg/l , sample collected May 18, 2016, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
0.0062 mg/l , sample collected May 18, 2016, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 18, 2016 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-022PB
Laboratory
MSDH Lab
0.0037 mg/l , sample collected May 18, 2016 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 18, 2016 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 18, 2016 03:40
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-021PB
Laboratory
MSDH Lab
0.0113 mg/l , sample collected May 18, 2016 03:40, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
0.001 mg/l , sample collected May 18, 2016 03:40, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 17, 2016 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-036PB
Laboratory
MSDH Lab
0.157 mg/l , sample collected May 17, 2016 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
0.0161 mg/l , sample collected May 17, 2016 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 17, 2016 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-026PB
Laboratory
MSDH Lab
0.0284 mg/l , sample collected May 17, 2016 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
0.0014 mg/l , sample collected May 17, 2016 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Collected
May 17, 2016
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160519-024PB
Laboratory
MSDH Lab
0.0027 mg/l , sample collected May 17, 2016, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 17, 2016, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Jun 30, 2016

Routine (10).