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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

MS0170005 , Days Water Association

25 of the 63 analytes this system has been tested for have been detected at least once, across 351 samples on record.

The other 38 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 351 samples on record, detections range from August 18, 1993 to August 24, 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 Days Water Association, 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 171 of 202 results Aug 18, 1993 Aug 24, 2025
Lead 1030 Inorganic Chemical 94 of 202 results Aug 18, 1993 Aug 24, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 23 of 25 results May 5, 2004 Jan 29, 2025
Nitrate 1040 Inorganic Chemical 23 of 25 results May 5, 2004 Jan 29, 2025
Barium 1010 Inorganic Chemical 19 of 19 results Apr 23, 2002 Feb 6, 2024
Nickel 1036 Inorganic Chemical 17 of 19 results Apr 23, 2002 Feb 6, 2024
Fluoride 1025 Inorganic Chemical 16 of 20 results Apr 23, 2002 Feb 6, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 12 of 31 results Jul 9, 2007 Oct 8, 2024
Chromium 1020 Inorganic Chemical 11 of 19 results Apr 23, 2002 Feb 6, 2024
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 13, 2011 Jul 10, 2012
TTHM 2950 Organic Chemical 4 of 28 results May 17, 2004 Aug 9, 2023
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 23, 2019 Sep 14, 2021
Dichloroacetic Acid 2451 Organic Chemical 3 of 6 results Sep 15, 2008 Jul 29, 2020
Selenium 1045 Inorganic Chemical 3 of 19 results Apr 23, 2002 Jan 23, 2006
Sulfate 1055 Inorganic Chemical 2 of 4 results Sep 10, 2003 Sep 14, 2021
Cadmium 1015 Inorganic Chemical 2 of 19 results Feb 28, 2005 Jan 23, 2006
Calcium 1016 Inorganic Chemical 1 of 1 result Sep 14, 2021 Sep 14, 2021
Chloride 1017 Inorganic Chemical 1 of 1 result Sep 14, 2021 Sep 14, 2021
Conductivity @ 25 C Umhos/CM 1064 Water Quality 1 of 1 result Sep 14, 2021 Sep 14, 2021
Alkalinity, Total 1927 Water Quality 1 of 1 result Sep 14, 2021 Sep 14, 2021
Monochloroacetic Acid 2450 Organic Chemical 1 of 6 results Aug 1, 2018 Aug 1, 2018
Trichloroacetic Acid 2452 Organic Chemical 1 of 6 results Sep 15, 2008 Sep 15, 2008
Chloroform 2941 Organic Chemical 1 of 6 results Sep 15, 2008 Sep 15, 2008
Bromodichloromethane 2943 Organic Chemical 1 of 6 results Sep 15, 2008 Sep 15, 2008
Arsenic 1005 Inorganic Chemical 1 of 19 results Apr 2, 2008 Apr 2, 2008

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 221–230 of 351 samples, newest first — collected January 24, 2011 to July 13, 2011. The summary above covers all 351.

21 results from the 10 samples listed here: 12 detected, 9 not detected. Across the whole record it is 417 of 1,154. 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 Days Water Association, every result from 221 to 230 of 351 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 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-121PB
Laboratory
MSDH Lab
0.0046 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-120PB
Laboratory
MSDH Lab
0.0045 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-119PB
Laboratory
MSDH Lab
0.0091 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-118PB
Laboratory
MSDH Lab
0.0048 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-117PB
Laboratory
MSDH Lab
0.0047 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-115PB
Laboratory
MSDH Lab
0.0385 mg/l , sample collected Jul 13, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0012 mg/l , sample collected Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-114PB
Laboratory
MSDH Lab
0.0102 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 13, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-113PB
Laboratory
MSDH Lab
0.0045 mg/l , sample collected Jul 13, 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 Jul 13, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 12, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110714-116PB
Laboratory
MSDH Lab
0.0087 mg/l , sample collected Jul 12, 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 Jul 12, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jan 24, 2011
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
110125-059NI
Laboratory
MSDH Lab
0.1 mg/l , sample collected Jan 24, 2011, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
0.1 mg/l , sample collected Jan 24, 2011, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 24, 2011, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011

Routine (10).