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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

MS0500001 , Central W/A-Arlington

34 of the 71 analytes this system has been tested for have been detected at least once, across 149 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 149 samples on record, detections range from October 8, 2003 to November 18, 2025. These figures cover the whole record.

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 Central W/A-Arlington, 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 60 of 60 results Jun 12, 2007 Sep 12, 2023
Lead 1030 Inorganic Chemical 21 of 60 results Jun 12, 2007 Sep 12, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 16 of 17 results Aug 30, 2007 Nov 18, 2025
TTHM 2950 Organic Chemical 16 of 16 results Jul 21, 2004 Nov 12, 2024
Dichloroacetic Acid 2451 Organic Chemical 12 of 12 results Aug 30, 2007 Nov 18, 2025
Trichloroacetic Acid 2452 Organic Chemical 11 of 12 results Aug 30, 2007 Nov 18, 2025
Chloroform 2941 Organic Chemical 11 of 11 results Aug 30, 2007 Nov 12, 2024
Bromodichloromethane 2943 Organic Chemical 11 of 11 results Aug 30, 2007 Nov 12, 2024
Dibromochloromethane 2944 Organic Chemical 11 of 11 results Aug 30, 2007 Nov 12, 2024
Barium 1010 Inorganic Chemical 9 of 9 results Oct 8, 2003 Mar 18, 2025
Nickel 1036 Inorganic Chemical 6 of 9 results Mar 10, 2004 Mar 18, 2025
Fluoride 1025 Inorganic Chemical 5 of 11 results Oct 8, 2003 Mar 18, 2025
Sodium 1052 Inorganic Chemical 5 of 5 results Apr 7, 2017 Feb 25, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 13, 2011 Jul 18, 2012
Dibromoacetic Acid 2454 Organic Chemical 4 of 12 results Aug 30, 2007 Nov 18, 2025
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 8, 2003 Apr 7, 2017
Chromium 1020 Inorganic Chemical 4 of 9 results Oct 8, 2003 Mar 7, 2016
Calcium 1016 Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Chloride 1017 Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Iron 1028 Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Magnesium 1031 Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Manganese 1032 Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Potassium 1042 Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Apr 7, 2017 Apr 7, 2017
Color 1905 Water Quality 2 of 2 results Apr 7, 2017 Apr 7, 2017
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results Apr 7, 2017 Apr 7, 2017
Alkalinity, Total 1927 Water Quality 2 of 2 results Apr 7, 2017 Apr 7, 2017
Iron, Field Result FEFD Inorganic Chemical 2 of 2 results Apr 7, 2017 Apr 7, 2017
Calculated Sodium NACA Water Quality 2 of 2 results Apr 7, 2017 Apr 7, 2017
PH, Field Result PHFD Water Quality 2 of 2 results Apr 7, 2017 Apr 7, 2017
Selenium 1045 Inorganic Chemical 2 of 9 results Mar 10, 2004 Apr 4, 2005
Monobromoacetic Acid 2453 Organic Chemical 1 of 12 results Sep 21, 2020 Sep 21, 2020
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Apr 7, 2017 Apr 7, 2017
Carbon Dioxide 1901 Water Quality 1 of 1 result Apr 7, 2017 Apr 7, 2017

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 11–20 of 149 samples, newest first — collected September 12, 2023 to June 3, 2024. The summary above covers all 149.

38 results from the 10 samples listed here: 22 detected, 16 not detected. Across the whole record it is 242 of 642. 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 8 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 Central W/A-Arlington, every result from 11 to 20 of 149 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
Jun 3, 2024 15:40
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-240604-024
Laboratory
MSDH Lab
15.4 ug/l , sample collected Jun 3, 2024 15:40, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Apr 2, 2024 15:25
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-240403-051
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 2, 2024 15:25, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 2, 2024 15:25, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 2, 2024 15:25, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Mar 12, 2024 12:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-97299-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 12:15, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
4.4 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
4 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 12:15, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 12:15, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
8.4 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Mar 31, 2024
12 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 12:15, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
7.4 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
4.1 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
23.5 ug/l , sample collected Mar 12, 2024 12:15, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Mar 31, 2024
Collected
Mar 12, 2024 11:35
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-97299-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 11:35, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
1.8 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
2 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 11:35, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 11:35, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
3.8 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Mar 31, 2024
4.5 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 12, 2024 11:35, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
2.5 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.3 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
8.3 ug/l , sample collected Mar 12, 2024 11:35, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Mar 31, 2024
Collected
Sep 12, 2023 07:30
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-230913-200
Laboratory
MSDH Lab
0.241 mg/l , sample collected Sep 12, 2023 07:30, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2023 07:30, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 12, 2023 06:00
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230913-199
Laboratory
MSDH Lab
0.136 mg/l , sample collected Sep 12, 2023 06:00, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2023 06:00, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 12, 2023 07:00
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-230913-198
Laboratory
MSDH Lab
0.148 mg/l , sample collected Sep 12, 2023 07:00, sampling point LC0001 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2023 07:00, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 12, 2023 06:15
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-230913-197
Laboratory
MSDH Lab
0.0661 mg/l , sample collected Sep 12, 2023 06:15, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2023 06:15, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 12, 2023 05:32
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-230913-196
Laboratory
MSDH Lab
0.292 mg/l , sample collected Sep 12, 2023 05:32, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 12, 2023 05:32, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Sep 12, 2023 08:30
Sampling point
LC0009 Location withheld
Sample type
Routine
Lab sample
PB-230913-195
Laboratory
MSDH Lab
0.0905 mg/l , sample collected Sep 12, 2023 08:30, sampling point LC0009 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.7 ug/l , sample collected Sep 12, 2023 08:30, sampling point LC0009 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023

Routine (10).