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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

MS0610030 , Union Water Association

38 of the 72 analytes this system has been tested for have been detected at least once, across 291 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 291 samples on record, detections range from October 27, 2003 to June 23, 2026. 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 Union 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 58 of 58 results Aug 7, 2007 Aug 2, 2023
Lead 1030 Inorganic Chemical 50 of 58 results Aug 7, 2007 Aug 2, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 28 of 28 results Aug 9, 2004 Jun 23, 2026
TTHM 2950 Organic Chemical 28 of 28 results Aug 9, 2004 Jun 23, 2026
Barium 1010 Inorganic Chemical 23 of 23 results Oct 27, 2003 Apr 22, 2025
Chloroform 2941 Organic Chemical 17 of 17 results Mar 9, 2009 Jun 23, 2026
Bromodichloromethane 2943 Organic Chemical 17 of 17 results Mar 9, 2009 Jun 23, 2026
Chromium 1020 Inorganic Chemical 17 of 23 results Oct 27, 2003 Apr 22, 2025
Dichloroacetic Acid 2451 Organic Chemical 16 of 17 results Mar 9, 2009 Jun 23, 2026
Trichloroacetic Acid 2452 Organic Chemical 16 of 17 results Mar 9, 2009 Jun 23, 2026
Dibromochloromethane 2944 Organic Chemical 15 of 17 results Mar 9, 2009 Jun 23, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 12 results Dec 13, 2011 Jul 18, 2012
Sodium 1052 Inorganic Chemical 8 of 8 results Mar 30, 2009 Nov 27, 2023
Nickel 1036 Inorganic Chemical 6 of 23 results May 15, 2013 Apr 22, 2025
Fluoride 1025 Inorganic Chemical 5 of 25 results May 9, 2017 Apr 22, 2025
Sulfate 1055 Inorganic Chemical 3 of 4 results Oct 27, 2003 Mar 30, 2009
Xylenes, Total 2955 Organic Chemical 2 of 42 results Jun 1, 2004 Mar 13, 2024
Monochloroacetic Acid 2450 Organic Chemical 2 of 17 results Dec 7, 2009 Jul 14, 2014
Calcium 1016 Inorganic Chemical 2 of 2 results Mar 30, 2009 Mar 30, 2009
Iron 1028 Inorganic Chemical 2 of 2 results Mar 30, 2009 Mar 30, 2009
Magnesium 1031 Inorganic Chemical 2 of 2 results Mar 30, 2009 Mar 30, 2009
Manganese 1032 Inorganic Chemical 2 of 2 results Mar 30, 2009 Mar 30, 2009
Potassium 1042 Inorganic Chemical 2 of 2 results Mar 30, 2009 Mar 30, 2009
Residue, Total, Filterable 1057 Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Alkalinity, Caco3 Stability 1067 Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Carbon Dioxide 1901 Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Color 1905 Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Alkalinity, Total 1927 Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Iron, Field Result FEFD Inorganic Chemical 2 of 2 results Mar 30, 2009 Mar 30, 2009
Calculated Sodium NACA Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
PH, Field Result PHFD Water Quality 2 of 2 results Mar 30, 2009 Mar 30, 2009
Dibromoacetic Acid 2454 Organic Chemical 2 of 17 results Mar 9, 2009 Mar 9, 2009
Dichloromethane 2964 Organic Chemical 2 of 42 results Aug 23, 2004 Aug 23, 2004
Ethylbenzene 2992 Organic Chemical 1 of 42 results Mar 13, 2024 Mar 13, 2024
Monobromoacetic Acid 2453 Organic Chemical 1 of 17 results Dec 7, 2009 Dec 7, 2009
Chloride 1017 Inorganic Chemical 1 of 2 results Mar 30, 2009 Mar 30, 2009
Carbon Tetrachloride 2982 Organic Chemical 1 of 42 results Sep 17, 2007 Sep 17, 2007

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 161–170 of 291 samples, newest first — collected July 17, 2012 to August 5, 2013. The summary above covers all 291.

46 results from the 10 samples listed here: 10 detected, 36 not detected. Across the whole record it is 357 of 1,754. 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 Union Water Association, every result from 161 to 170 of 291 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 5, 2013 01:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130806-015CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Aug 5, 2013 01:00, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Aug 5, 2013 01:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130806-014CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Aug 5, 2013 01:00, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
May 15, 2013 01:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130516-038IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0055 mg/l , sample collected May 15, 2013 01:30, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0039 mg/l , sample collected May 15, 2013 01:30, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0012 mg/l , sample collected May 15, 2013 01:30, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
May 15, 2013 01:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130516-037IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0054 mg/l , sample collected May 15, 2013 01:30, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0037 mg/l , sample collected May 15, 2013 01:30, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Fluoride 1025 EPA method 300.0 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0012 mg/l , sample collected May 15, 2013 01:30, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 15, 2013 01:30, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Mar 11, 2013 03:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130312-118NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 03:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 03:00, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 03:00, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Mar 11, 2013 03:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
130312-117NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 03:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 03:00, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2013 03:00, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Jul 18, 2012 12:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
201211090540
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Jul 18, 2012 12:30, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.434 pci/l Minimum Reporting Level , sample collected Jul 18, 2012 12:30, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.434 pci/l Minimum Reporting Level , sample collected Jul 18, 2012 12:30, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Jul 18, 2012 12:30, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 18, 2012 12:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201211090539
Laboratory
Radiation Safety Engineering
0.4 pci/l , sample collected Jul 18, 2012 12:30, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.459 pci/l Minimum Reporting Level , sample collected Jul 18, 2012 12:30, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.459 pci/l Minimum Reporting Level , sample collected Jul 18, 2012 12:30, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Jul 18, 2012 12:30, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 17, 2012 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120718-045
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Jul 17, 2012 13:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.434 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.434 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 17, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120718-044
Laboratory
Radiation Safety Engineering
0.4 pci/l , sample collected Jul 17, 2012 13:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.459 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.459 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012

Routine (10).