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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 171–180 of 291 samples, newest first — collected February 13, 2012 to July 17, 2012. The summary above covers all 291.

43 results from the 10 samples listed here: 3 detected, 40 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 171 to 180 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
Jul 17, 2012 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120718-045RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 17, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120718-044RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 13:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Jun 4, 2012 01:30
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120605-020VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 4, 2012 01:30, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2012 – Dec 31, 2012
Collected
Apr 23, 2012 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120424-131
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Apr 23, 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 Apr 23, 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 Apr 23, 2012 13:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 13:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 23, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120424-130
Laboratory
Radiation Safety Engineering
0.4 pci/l , sample collected Apr 23, 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 Apr 23, 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 Apr 23, 2012 13:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.37 pci/l Minimum Reporting Level , sample collected Apr 23, 2012 13:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 23, 2012 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120424-131RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 23, 2012 13:00, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 23, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120424-130RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 23, 2012 13:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012
Collected
Mar 19, 2012 01:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120320-071NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 19, 2012 01:00, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 19, 2012 01:00, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 19, 2012 01:00, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Mar 19, 2012 01:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120320-063NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 19, 2012 01:00, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 19, 2012 01:00, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 19, 2012 01:00, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Feb 13, 2012 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120214-040
Laboratory
Radiation Safety Engineering
0.9 pci/l , sample collected Feb 13, 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 Feb 13, 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 Feb 13, 2012 13:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Jan 1, 2012 – Mar 31, 2012
Not detected below 0.35 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 13:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Jan 1, 2012 – Mar 31, 2012

Routine (10).