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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

MS0510012 , North Decatur W/A #1

38 of the 72 analytes this system has been tested for have been detected at least once, across 335 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 335 samples on record, detections range from October 13, 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 North Decatur W/A #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 66 of 66 results Aug 2, 2007 Jul 9, 2026
Lead 1030 Inorganic Chemical 33 of 66 results Aug 2, 2007 Sep 12, 2023
Xylenes, Total 2955 Organic Chemical 24 of 111 results May 21, 2012 Oct 20, 2014
Barium 1010 Inorganic Chemical 22 of 22 results Oct 13, 2003 Jul 9, 2026
TTHM 2950 Organic Chemical 16 of 18 results Jul 19, 2004 Aug 11, 2025
Sodium 1052 Inorganic Chemical 13 of 13 results Mar 26, 2010 Jun 16, 2026
Chloroform 2941 Organic Chemical 12 of 13 results Sep 24, 2007 Aug 11, 2025
Bromodichloromethane 2943 Organic Chemical 11 of 13 results Sep 24, 2007 Aug 11, 2025
Chromium 1020 Inorganic Chemical 11 of 22 results Oct 13, 2003 Jan 9, 2024
Dibromochloromethane 2944 Organic Chemical 10 of 13 results Sep 24, 2007 Aug 11, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 10 of 18 results Jun 16, 2010 Dec 2, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 15 results Mar 13, 2012 Oct 3, 2012
Trichloroacetic Acid 2452 Organic Chemical 9 of 12 results Aug 19, 2013 Dec 2, 2024
Fluoride 1025 Inorganic Chemical 6 of 25 results Mar 26, 2010 Jul 9, 2026
Nitrate-Nitrite 1038 Inorganic Chemical 6 of 53 results May 24, 2004 May 11, 2009
Nitrate 1040 Inorganic Chemical 6 of 53 results May 24, 2004 May 11, 2009
Dichloroacetic Acid 2451 Organic Chemical 5 of 12 results Aug 19, 2013 Dec 2, 2024
Sulfate 1055 Inorganic Chemical 5 of 5 results Oct 13, 2003 Mar 26, 2010
Nickel 1036 Inorganic Chemical 4 of 19 results Apr 4, 2005 Mar 31, 2014
Cyanide 1024 Inorganic Chemical 3 of 18 results May 22, 2017 Mar 8, 2021
Calcium 1016 Inorganic Chemical 3 of 3 results Mar 26, 2010 Mar 26, 2010
Chloride 1017 Inorganic Chemical 3 of 3 results Mar 26, 2010 Mar 26, 2010
Magnesium 1031 Inorganic Chemical 3 of 3 results Mar 26, 2010 Mar 26, 2010
Manganese 1032 Inorganic Chemical 3 of 3 results Mar 26, 2010 Mar 26, 2010
Potassium 1042 Inorganic Chemical 3 of 3 results Mar 26, 2010 Mar 26, 2010
Residue, Total, Filterable 1057 Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Carbon Dioxide 1901 Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Color 1905 Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Hardness, Total (As Caco3) 1915 Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Alkalinity, Total 1927 Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Iron, Field Result FEFD Inorganic Chemical 3 of 3 results Mar 26, 2010 Mar 26, 2010
Calculated Sodium NACA Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
PH, Field Result PHFD Water Quality 3 of 3 results Mar 26, 2010 Mar 26, 2010
Thallium, Total 1085 Inorganic Chemical 2 of 22 results Apr 28, 2020 Apr 28, 2020
Ethylbenzene 2992 Organic Chemical 2 of 111 results Jan 30, 2013 Jan 30, 2013
Iron 1028 Inorganic Chemical 2 of 3 results Mar 26, 2010 Mar 26, 2010
Nitrite 1041 Inorganic Chemical 1 of 53 results Mar 9, 2022 Mar 9, 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 1–10 of 14 samples, newest first — collected February 25, 2025 to July 9, 2026. The summary above covers all 14.

55 results from the 10 samples listed here: 15 detected, 40 not detected. Across the whole record it is 331 of 3,164. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Units in this table

Sodium is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

We withheld the location of 1 sampling point 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 North Decatur W/A #1, every result from 1 to 10 of 14 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
TF103
Sample type
Routine
Lab sample
35050692002
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
14.3 ug/l , sample collected Jul 9, 2026, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
3.5 ug/l , sample collected Jul 9, 2026, sampling point TF103 Copper, Free 1022 EPA method 200.8 Not recorded
0.051 mg/l , sample collected Jul 9, 2026, sampling point TF103 Fluoride 1025 EPA method 300.0 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Lead 1030 EPA method 200.8 Not recorded
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Mercury 1035 EPA method 245.1 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Collected
Jul 9, 2026
Sampling point
TF102
Sample type
Routine
Lab sample
35050692001
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
14.2 ug/l , sample collected Jul 9, 2026, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
2.9 ug/l , sample collected Jul 9, 2026, sampling point TF102 Copper, Free 1022 EPA method 200.8 Not recorded
0.052 mg/l , sample collected Jul 9, 2026, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Lead 1030 EPA method 200.8 Not recorded
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Mercury 1035 EPA method 245.1 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 9, 2026, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2026 – Dec 31, 2031
Collected
Jun 16, 2026
Sampling point
TF101
Sample type
Routine
Lab sample
35044945001
Laboratory
Pace Analytical Services, LLC
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Arsenic 1005 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
10.3 ug/l , sample collected Jun 16, 2026, sampling point TF101 Barium 1010 EPA method 200.7 Apr 1, 2026 – Jun 30, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Cadmium 1015 EPA method 200.7 Apr 1, 2026 – Jun 30, 2026
Not detected below 5 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Chromium 1020 EPA method 200.7 Apr 1, 2026 – Jun 30, 2026
0.097 mg/l , sample collected Jun 16, 2026, sampling point TF101 Fluoride 1025 EPA method 300.0 Apr 1, 2026 – Jun 30, 2026
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Mercury 1035 EPA method 245.1 Apr 1, 2026 – Jun 30, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Selenium 1045 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
55200 ug/l , sample collected Jun 16, 2026, sampling point TF101 Sodium 1052 EPA method 200.7 Jan 1, 2026 – Dec 31, 2028
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
Not detected below 4 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Beryllium, Total 1075 EPA method 200.7 Apr 1, 2026 – Jun 30, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 16, 2026, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Apr 1, 2026 – Jun 30, 2026
Collected
Dec 8, 2025 15:12
Sampling point
TF103
Sample type
Routine
Lab sample
NI-251209-003
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 8, 2025 15:12, 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 Dec 8, 2025 15:12, 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 Dec 8, 2025 15:12, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Dec 8, 2025 15:18
Sampling point
TF102
Sample type
Routine
Lab sample
NI-251209-002
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 8, 2025 15:18, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Dec 8, 2025 15:18, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Dec 8, 2025 15:18, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Nov 10, 2025 09:05
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-171553-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 10, 2025 09:05, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 10, 2025 09:05, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 10, 2025 09:05, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 10, 2025 09:05, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 10, 2025 09:05, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 10, 2025 09:05, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Aug 11, 2025 09:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-159505-1
Laboratory
Eurofins Eaton Analytical South Bend in
1.7 ug/l , sample collected Aug 11, 2025 09:45, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 11, 2025 09:45, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
1.2 ug/l , sample collected Aug 11, 2025 09:45, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.69 ug/l , sample collected Aug 11, 2025 09:45, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.59 ug/l , sample collected Aug 11, 2025 09:45, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 24, 2025 13:38
Sampling point
TF101
Sample type
Routine
Lab sample
NI-250325-025
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 24, 2025 13:38, 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 Mar 24, 2025 13:38, 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 Mar 24, 2025 13:38, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2025 – Dec 31, 2025
Collected
Feb 25, 2025 14:21
Sampling point
TF103
Sample type
Routine
Lab sample
NA-250226-063
Laboratory
MSDH Lab
53.4 mg/l , sample collected Feb 25, 2025 14:21, sampling point TF103 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025
Collected
Feb 25, 2025 14:10
Sampling point
TF102
Sample type
Routine
Lab sample
NA-250226-064
Laboratory
MSDH Lab
55.4 mg/l , sample collected Feb 25, 2025 14:10, sampling point TF102 Sodium 1052 EPA method 200.7 Jan 1, 2023 – Dec 31, 2025

Routine (10).