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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

MS0470105 , Marshall Co Water Assn

18 of the 61 analytes this system has been tested for have been detected at least once, across 449 samples on record.

The other 43 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 449 samples on record, detections range from October 8, 2003 to July 9, 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 Marshall Co Water Assn, 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 313 of 313 results Sep 23, 2004 Jul 30, 2024
Lead 1030 Inorganic Chemical 184 of 313 results Sep 23, 2004 Jul 30, 2024
Barium 1010 Inorganic Chemical 14 of 14 results Oct 8, 2003 Mar 11, 2025
Sodium 1052 Inorganic Chemical 8 of 8 results Sep 17, 2019 Feb 25, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 14, 2011 Jul 19, 2012
Calcium 1016 Inorganic Chemical 4 of 4 results Nov 19, 2021 Dec 1, 2021
Chloride 1017 Inorganic Chemical 4 of 4 results Nov 19, 2021 Dec 1, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 4 of 4 results Nov 19, 2021 Dec 1, 2021
Alkalinity, Total 1927 Water Quality 4 of 4 results Nov 19, 2021 Dec 1, 2021
Xylenes, Total 2955 Organic Chemical 3 of 15 results Aug 2, 2023 Jul 9, 2026
Nickel 1036 Inorganic Chemical 3 of 14 results Mar 10, 2004 Mar 11, 2025
Chromium 1020 Inorganic Chemical 2 of 14 results Mar 1, 2016 Jul 12, 2023
Sulfate 1055 Inorganic Chemical 2 of 6 results Nov 19, 2021 Nov 19, 2021
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 20 results Aug 28, 2007 Jun 17, 2010
TTHM 2950 Organic Chemical 2 of 21 results Aug 28, 2007 Jun 17, 2010
Color 1905 Water Quality 1 of 4 results Dec 1, 2021 Dec 1, 2021
Dichloromethane 2964 Organic Chemical 1 of 15 results Aug 26, 2004 Aug 26, 2004
Selenium 1045 Inorganic Chemical 1 of 14 results Mar 10, 2004 Mar 10, 2004

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 table below lists 1–10 of 23 samples, newest first — collected March 11, 2025 to July 9, 2026. The summary above covers all 23.

53 results from the 10 samples listed here: 3 detected, 50 not detected. Across the whole record it is 557 of 1,447. 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 2 sampling points 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 Marshall Co Water Assn, every result from 1 to 10 of 23 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
Jul 9, 2026
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
35050686001
Laboratory
Pace Analytical Services, LLC
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
2 ug/l , sample collected Jul 9, 2026, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Benzene 2990 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Toluene 2991 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF081 Styrene 2996 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Collected
Feb 3, 2026 11:00
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
RU-260204-001
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2026 11:00, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Jan 1, 2026 – Dec 31, 2034
Collected
Dec 1, 2025 11:12
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-173536-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2025 11:12, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2025 11:12, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2025 11:12, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2025 11:12, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 1, 2025 11:12, sampling point SM2 TTHM 2950 EPA method 524.2 Not recorded
Collected
Oct 8, 2025 10:35
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
RU-251009-005
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 8, 2025 10:35, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Oct 1, 2025 – Dec 31, 2025
Collected
Sep 25, 2025 13:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-165591-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 25, 2025 13:30, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Sep 16, 2025 10:35
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
CN-250917-011
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 16, 2025 10:35, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Sep 16, 2025 10:29
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-250917-018
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 16, 2025 10:29, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 8, 2025 10:40
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
RU-250709-003
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 8, 2025 10:40, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Jul 1, 2025 – Sep 30, 2025
Collected
Apr 8, 2025 10:05
Sampling point
TF081 TF081
Sample type
Routine
Lab sample
RU-250409-006
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 8, 2025 10:05, sampling point TF081 Combined Uranium 4006 EPA method 200.8 Apr 1, 2025 – Jun 30, 2025
Collected
Mar 11, 2025 10:03
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
IN-250312-041
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:03, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0076 mg/l , sample collected Mar 11, 2025 10:03, sampling point TF080 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 11, 2025 10:03, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:03, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:03, sampling point TF080 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2023 – Dec 31, 2025
0.0006 mg/l , sample collected Mar 11, 2025 10:03, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:03, sampling point TF080 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 11, 2025 10:03, sampling point TF080 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 11, 2025 10:03, sampling point TF080 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 11, 2025 10:03, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).