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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

MS0310001 , Tallahala W/A-Antioch

23 of the 57 analytes this system has been tested for have been detected at least once, across 895 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 895 samples on record, detections range from September 22, 2003 to October 1, 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 Tallahala W/A-Antioch, 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 429 of 429 results Aug 29, 2007 Jul 23, 2024
Lead 1030 Inorganic Chemical 323 of 429 results Aug 29, 2007 Jul 23, 2024
Barium 1010 Inorganic Chemical 57 of 59 results Sep 22, 2003 Feb 25, 2025
Chromium 1020 Inorganic Chemical 35 of 59 results Sep 22, 2003 Feb 25, 2025
TTHM 2950 Organic Chemical 26 of 26 results Jun 14, 2004 Oct 1, 2025
Fluoride 1025 Inorganic Chemical 23 of 59 results Sep 22, 2003 Feb 25, 2025
Nickel 1036 Inorganic Chemical 19 of 59 results Mar 1, 2004 Feb 25, 2025
Xylenes, Total 2955 Organic Chemical 19 of 119 results Apr 28, 2004 Jul 12, 2022
Chloroform 2941 Organic Chemical 18 of 18 results May 17, 2006 Oct 1, 2025
Sodium 1052 Inorganic Chemical 18 of 18 results Sep 19, 2019 Feb 4, 2025
Bromodichloromethane 2943 Organic Chemical 17 of 18 results May 17, 2006 Oct 1, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 16 of 26 results Mar 29, 2006 Apr 1, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 16 of 21 results Mar 6, 2012 Jan 9, 2018
Dibromochloromethane 2944 Organic Chemical 13 of 18 results May 17, 2006 Oct 1, 2025
Sulfate 1055 Inorganic Chemical 10 of 10 results Sep 22, 2003 Mar 1, 2004
Nitrate-Nitrite 1038 Inorganic Chemical 8 of 128 results Mar 23, 2015 Apr 24, 2024
Nitrate 1040 Inorganic Chemical 8 of 128 results Mar 23, 2015 Apr 24, 2024
Dichloroacetic Acid 2451 Organic Chemical 6 of 15 results Sep 24, 2008 Sep 17, 2024
Trichloroacetic Acid 2452 Organic Chemical 6 of 15 results Sep 24, 2008 Sep 17, 2024
Ethylbenzene 2992 Organic Chemical 6 of 119 results Aug 3, 2004 Jun 2, 2005
Monochloroacetic Acid 2450 Organic Chemical 2 of 15 results Aug 6, 2018 Mar 4, 2020
Nitrite 1041 Inorganic Chemical 1 of 128 results Feb 21, 2023 Feb 21, 2023
Carbon Tetrachloride 2982 Organic Chemical 1 of 119 results Jul 12, 2022 Jul 12, 2022

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 11–20 of 37 samples, newest first — collected February 25, 2025 to August 20, 2025. The summary above covers all 37.

70 results from the 10 samples listed here: 17 detected, 53 not detected. Across the whole record it is 1,077 of 4,784. 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 Tallahala W/A-Antioch, every result from 11 to 20 of 37 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
Aug 20, 2025 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250821-014
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 13:00, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
May 6, 2025 10:50
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-147422-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
2.5 ug/l , sample collected May 6, 2025 10:50, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:50, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
2.1 ug/l , sample collected May 6, 2025 10:50, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.5 ug/l , sample collected May 6, 2025 10:50, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.1 ug/l , sample collected May 6, 2025 10:50, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
May 6, 2025 10:55
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-147422-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
2.5 ug/l , sample collected May 6, 2025 10:55, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 6, 2025 10:55, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
2.1 ug/l , sample collected May 6, 2025 10:55, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.5 ug/l , sample collected May 6, 2025 10:55, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.1 ug/l , sample collected May 6, 2025 10:55, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 29, 2025 12:40
Sampling point
TF107 Treatment Facility TF107
Sample type
Routine
Lab sample
CN-250430-026
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Apr 29, 2025 12:40, sampling point TF107 Cyanide 1024 EPA method QC10204001X Jan 1, 2025 – Dec 31, 2025
Collected
Apr 1, 2025 12:25
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-250402-005
Laboratory
MSDH Lab
1.64 ug/l , sample collected Apr 1, 2025 12:25, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Apr 1, 2025 12:24
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-250402-004
Laboratory
MSDH Lab
3.16 ug/l , sample collected Apr 1, 2025 12:24, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Feb 25, 2025 13:56
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
IN-250226-035
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 13:56, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0234 mg/l , sample collected Feb 25, 2025 13:56, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 13:56, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0031 mg/l , sample collected Feb 25, 2025 13:56, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 13:56, sampling point TF104 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 Feb 25, 2025 13:56, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0031 mg/l , sample collected Feb 25, 2025 13:56, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 13:56, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 13:56, sampling point TF104 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 Feb 25, 2025 13:56, sampling point TF104 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 Feb 25, 2025 13:56, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 25, 2025 14:45
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
IN-250226-034
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:45, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0086 mg/l , sample collected Feb 25, 2025 14:45, 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 Feb 25, 2025 14:45, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:45, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.243 mg/l , sample collected Feb 25, 2025 14:45, 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 Feb 25, 2025 14:45, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:45, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:45, 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 Feb 25, 2025 14:45, 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 Feb 25, 2025 14:45, 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 Feb 25, 2025 14:45, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 25, 2025 14:23
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
IN-250226-033
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0184 mg/l , sample collected Feb 25, 2025 14:23, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 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 Feb 25, 2025 14:23, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:23, sampling point TF102 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 Feb 25, 2025 14:23, sampling point TF102 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 Feb 25, 2025 14:23, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 25, 2025 14:22
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250226-032
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:22, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0186 mg/l , sample collected Feb 25, 2025 14:22, 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 Feb 25, 2025 14:22, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:22, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:22, sampling point TF101 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 Feb 25, 2025 14:22, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:22, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 25, 2025 14:22, 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 Feb 25, 2025 14:22, 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 Feb 25, 2025 14:22, 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 Feb 25, 2025 14:22, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).