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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 101–110 of 149 samples, newest first — collected August 9, 2011 to December 13, 2011. The summary above covers all 149.

22 results from the 10 samples listed here: 14 detected, 8 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.

Chemical and radiological sample results for Central W/A-Arlington, every result from 101 to 110 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
Dec 13, 2011 14:20
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
111214-064
Laboratory
Radiation Safety Engineering
1 pci/l , sample collected Dec 13, 2011 14:20, sampling point TF080 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.232 pci/l Minimum Reporting Level , sample collected Dec 13, 2011 14:20, sampling point TF080 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.232 pci/l Minimum Reporting Level , sample collected Dec 13, 2011 14:20, sampling point TF080 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.22 pci/l Minimum Reporting Level , sample collected Dec 13, 2011 14:20, sampling point TF080 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-140PB
Laboratory
MSDH Lab
0.1135 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-134PB
Laboratory
MSDH Lab
0.0235 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-133PB
Laboratory
MSDH Lab
0.0978 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0007 mg/l , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-132PB
Laboratory
MSDH Lab
0.1476 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.001 mg/l , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-131PB
Laboratory
MSDH Lab
0.1428 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0006 mg/l , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-105PB
Laboratory
MSDH Lab
0.6438 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-104PB
Laboratory
MSDH Lab
0.2218 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-103PB
Laboratory
MSDH Lab
0.0237 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 9, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110810-097PB
Laboratory
MSDH Lab
0.1419 mg/l , sample collected Aug 9, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0006 mg/l , sample collected Aug 9, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011

Routine (10).