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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

MS0780008 , Mt Zion Water Association

36 of the 73 analytes this system has been tested for have been detected at least once, across 210 samples on record.

The other 37 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 210 samples on record, detections range from November 3, 2003 to March 31, 2025. These figures cover the whole record; the list of samples further down is narrowed.

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 Mt Zion Water Association, 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 31 of 31 results Jul 12, 2007 Aug 14, 2023
Fluoride 1025 Inorganic Chemical 23 of 26 results Nov 3, 2003 Mar 31, 2025
Barium 1010 Inorganic Chemical 22 of 22 results Nov 3, 2003 Mar 31, 2025
Lead 1030 Inorganic Chemical 19 of 31 results Jun 20, 2011 Aug 14, 2023
Chromium 1020 Inorganic Chemical 17 of 22 results Nov 3, 2003 Mar 31, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 12, 2012 Oct 2, 2012
Nickel 1036 Inorganic Chemical 9 of 22 results Apr 5, 2004 Mar 31, 2025
TTHM 2950 Organic Chemical 8 of 8 results Sep 20, 2004 Mar 3, 2025
Sodium 1052 Inorganic Chemical 8 of 8 results Jul 20, 2006 Mar 20, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 8 results Sep 17, 2007 Mar 3, 2025
Selenium 1045 Inorganic Chemical 7 of 22 results Apr 5, 2004 Apr 14, 2008
Arsenic 1005 Inorganic Chemical 6 of 22 results Apr 5, 2004 Mar 31, 2025
Calcium 1016 Inorganic Chemical 4 of 4 results Jul 20, 2006 Sep 29, 2017
Chloride 1017 Inorganic Chemical 4 of 4 results Jul 20, 2006 Sep 29, 2017
Magnesium 1031 Inorganic Chemical 4 of 4 results Jul 20, 2006 Sep 29, 2017
Manganese 1032 Inorganic Chemical 4 of 4 results Jul 20, 2006 Sep 29, 2017
Potassium 1042 Inorganic Chemical 4 of 4 results Jul 20, 2006 Sep 29, 2017
Residue, Total, Filterable 1057 Water Quality 4 of 4 results Jul 20, 2006 Sep 29, 2017
Color 1905 Water Quality 4 of 4 results Jul 20, 2006 Sep 29, 2017
Hardness, Total (As Caco3) 1915 Water Quality 4 of 4 results Jul 20, 2006 Sep 29, 2017
Alkalinity, Total 1927 Water Quality 4 of 4 results Jul 20, 2006 Sep 29, 2017
Calculated Sodium NACA Water Quality 4 of 4 results Jul 20, 2006 Sep 29, 2017
PH, Field Result PHFD Water Quality 4 of 4 results Jul 20, 2006 Sep 29, 2017
Dichloroacetic Acid 2451 Organic Chemical 4 of 4 results Sep 17, 2007 Aug 29, 2016
Trichloroacetic Acid 2452 Organic Chemical 4 of 4 results Sep 17, 2007 Aug 29, 2016
Dibromoacetic Acid 2454 Organic Chemical 4 of 4 results Sep 17, 2007 Aug 29, 2016
Chloroform 2941 Organic Chemical 4 of 4 results Sep 17, 2007 Aug 29, 2016
Bromodichloromethane 2943 Organic Chemical 4 of 4 results Sep 17, 2007 Aug 29, 2016
Dibromochloromethane 2944 Organic Chemical 4 of 4 results Sep 17, 2007 Aug 29, 2016
Alkalinity, Caco3 Stability 1067 Water Quality 3 of 3 results Aug 25, 2009 Sep 29, 2017
Iron, Field Result FEFD Inorganic Chemical 3 of 4 results Jul 20, 2006 Sep 29, 2017
Iron 1028 Inorganic Chemical 2 of 4 results Sep 29, 2017 Sep 29, 2017
Carbon Dioxide 1901 Water Quality 2 of 2 results Jul 20, 2006 Aug 25, 2009
Xylenes, Total 2955 Organic Chemical 2 of 27 results Dec 11, 2006 Aug 20, 2007
Sulfate 1055 Inorganic Chemical 2 of 8 results Nov 3, 2003 Nov 3, 2003
PH 1925 Water Quality 1 of 1 result Jul 20, 2006 Jul 20, 2006

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The 8 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.

21 results from the 8 samples listed here: 7 detected, 14 not detected. 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 Mt Zion Water Association, every result from the 8 samples on record, 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 9, 2025 14:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-251210-022
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Dec 9, 2025 14:30, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Oct 6, 2025 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-251007-008
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 6, 2025 13:00, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Apr 29, 2025 13:40
Sampling point
TF103 TF103
Sample type
Routine
Lab sample
NI-250430-004
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 29, 2025 13:40, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 29, 2025 13:40, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 29, 2025 13:40, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Apr 15, 2025 13:50
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
NI-250416-038
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 13:50, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 13:50, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 15, 2025 13:50, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Mar 31, 2025 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250401-034
Laboratory
MSDH Lab
0.0007 mg/l , sample collected Mar 31, 2025 13:00, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0092 mg/l , sample collected Mar 31, 2025 13:00, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2025 13:00, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0007 mg/l , sample collected Mar 31, 2025 13:00, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.299 mg/l , sample collected Mar 31, 2025 13:00, sampling point TF101 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
0.0006 mg/l , sample collected Mar 31, 2025 13:00, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 31, 2025 13:00, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2025 13:00, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2025 13:00, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 31, 2025 13:00, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 3, 2025 13:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-250304-004
Laboratory
MSDH Lab
49.8 ug/l , sample collected Mar 3, 2025 13:30, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2023 – Dec 31, 2025
Collected
Mar 3, 2025 13:30
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-250304-004
Laboratory
MSDH Lab
57.5 ug/l , sample collected Mar 3, 2025 13:30, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2023 – Dec 31, 2025
Collected
Oct 7, 2024 14:50
Sampling point
TF103 TF103
Sample type
Routine
Lab sample
CN-241008-009
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 7, 2024 14:50, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2022 – Dec 31, 2024

Routine (8).