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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

MS0110002 , C S & I Water Assn #1

31 of the 59 analytes this system has been tested for have been detected at least once, across 405 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 405 samples on record, detections range from November 3, 1993 to August 4, 2026. 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 C S & I Water Assn #1, 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 132 of 144 results Nov 3, 1993 Aug 4, 2026
Lead 1030 Inorganic Chemical 111 of 144 results Nov 3, 1993 Aug 4, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 48 of 51 results May 19, 2004 Oct 8, 2025
TTHM 2950 Organic Chemical 48 of 52 results May 19, 2004 Oct 8, 2025
Chloroform 2941 Organic Chemical 34 of 35 results Sep 14, 2006 Oct 8, 2025
Bromodichloromethane 2943 Organic Chemical 32 of 36 results Sep 14, 2006 Oct 8, 2025
Dichloroacetic Acid 2451 Organic Chemical 31 of 31 results Jan 30, 2008 Oct 8, 2025
Dibromochloromethane 2944 Organic Chemical 31 of 36 results Sep 14, 2006 Oct 8, 2025
Trichloroacetic Acid 2452 Organic Chemical 29 of 31 results Jan 30, 2008 Oct 8, 2025
Barium 1010 Inorganic Chemical 25 of 25 results Mar 12, 2002 Jan 13, 2025
Fluoride 1025 Inorganic Chemical 25 of 25 results Mar 12, 2002 Jan 13, 2025
Dibromoacetic Acid 2454 Organic Chemical 22 of 31 results Jan 30, 2008 Oct 8, 2025
Bromoform 2942 Organic Chemical 20 of 36 results Sep 14, 2006 Oct 8, 2025
Chromium 1020 Inorganic Chemical 19 of 25 results Jan 28, 2004 Jan 13, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 14 of 14 results Dec 7, 2011 Jul 12, 2012
Monochloroacetic Acid 2450 Organic Chemical 11 of 31 results Jan 30, 2008 Jan 4, 2010
Monobromoacetic Acid 2453 Organic Chemical 7 of 31 results Jan 14, 2009 Feb 14, 2011
Arsenic 1005 Inorganic Chemical 6 of 25 results Jan 25, 2006 Jan 13, 2025
Nickel 1036 Inorganic Chemical 6 of 25 results Jan 25, 2006 Jan 13, 2025
Selenium 1045 Inorganic Chemical 6 of 25 results Feb 14, 2005 Mar 26, 2008
Xylenes, Total 2955 Organic Chemical 5 of 31 results May 18, 2021 Feb 26, 2024
Sodium 1052 Inorganic Chemical 4 of 4 results Apr 12, 2021 Oct 14, 2024
Vinyl Chloride 2976 Organic Chemical 4 of 31 results Apr 25, 2018 Oct 3, 2023
Gross Alpha, Excl. Radon & U 4000 Radionuclide 3 of 4 results Mar 22, 2012 Jun 13, 2012
Gross Alpha Particle Activity 4109 Radionuclide 3 of 4 results Mar 22, 2012 Jun 13, 2012
Sulfate 1055 Inorganic Chemical 3 of 5 results Mar 12, 2002 Jan 28, 2004
Combined Uranium 4006 Radionuclide 2 of 16 results Jun 13, 2012 Jun 13, 2012
Ethylbenzene 2992 Organic Chemical 1 of 31 results May 18, 2021 May 18, 2021
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 18 results Mar 22, 2012 Mar 22, 2012
Radium-226 4020 Radionuclide 1 of 18 results Mar 22, 2012 Mar 22, 2012
Radium-228 4030 Radionuclide 1 of 18 results Mar 22, 2012 Mar 22, 2012

Showing samples collected between September 26, 2024 and September 26, 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 table below lists 21–25 of 25 samples, newest first — collected October 14, 2024 to January 29, 2025. The summary above covers all 25.

19 results from the 5 samples listed here: 7 detected, 12 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 C S & I Water Assn #1, every result from 21 to 25 of 25 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
Jan 29, 2025 08:45
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
NI-250129-042
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 08:45, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 08:45, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 08:45, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Jan 29, 2025 08:44
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NI-250129-043
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 29, 2025 08:44, 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 Jan 29, 2025 08:44, 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 Jan 29, 2025 08:44, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Jan 13, 2025 09:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250114-035
Laboratory
MSDH Lab
0.0005 mg/l , sample collected Jan 13, 2025 09:30, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0133 mg/l , sample collected Jan 13, 2025 09:30, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 09:30, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0027 mg/l , sample collected Jan 13, 2025 09:30, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.708 mg/l , sample collected Jan 13, 2025 09:30, sampling point TF103 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 09:30, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0011 mg/l , sample collected Jan 13, 2025 09:30, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 09:30, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2025 09:30, sampling point TF103 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 Jan 13, 2025 09:30, sampling point TF103 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 Jan 13, 2025 09:30, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Oct 14, 2024 10:20
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
NA-241014-001
Laboratory
MSDH Lab
162 mg/l , sample collected Oct 14, 2024 10:20, sampling point TF104 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024
Collected
Oct 14, 2024 10:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
NA-241014-002
Laboratory
MSDH Lab
159 mg/l , sample collected Oct 14, 2024 10:05, sampling point TF103 Sodium 1052 EPA method 200.7 Jan 1, 2022 – Dec 31, 2024

Routine (5).