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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

MS0100017 , Union W/A

43 of the 73 analytes this system has been tested for have been detected at least once, across 326 samples on record.

The other 30 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 326 samples on record, detections range from September 16, 1993 to January 21, 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 Union W/A, 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 117 of 136 results Sep 16, 1993 Sep 25, 2024
Lead 1030 Inorganic Chemical 53 of 136 results Sep 16, 1993 Jun 8, 2023
TTHM 2950 Organic Chemical 32 of 41 results Jul 12, 2004 Mar 21, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 26 of 39 results Jul 12, 2004 Mar 21, 2023
Chloroform 2941 Organic Chemical 23 of 24 results May 23, 2006 Jun 26, 2018
Bromodichloromethane 2943 Organic Chemical 21 of 24 results May 23, 2006 Jun 26, 2018
Dibromochloromethane 2944 Organic Chemical 18 of 24 results Jul 31, 2006 Jun 26, 2018
Barium 1010 Inorganic Chemical 16 of 16 results Mar 12, 2002 Jan 21, 2025
Dichloroacetic Acid 2451 Organic Chemical 14 of 18 results Aug 25, 2008 Jun 26, 2018
Fluoride 1025 Inorganic Chemical 13 of 17 results Mar 12, 2002 Jan 21, 2025
Trichloroacetic Acid 2452 Organic Chemical 12 of 18 results Aug 25, 2008 Jun 26, 2018
Chromium 1020 Inorganic Chemical 9 of 16 results Feb 14, 2005 Jan 12, 2021
Dibromoacetic Acid 2454 Organic Chemical 9 of 18 results Aug 25, 2008 Jun 26, 2018
Nickel 1036 Inorganic Chemical 7 of 16 results Mar 12, 2002 Jan 21, 2025
Sodium 1052 Inorganic Chemical 7 of 7 results Sep 29, 2017 Oct 16, 2024
Monobromoacetic Acid 2453 Organic Chemical 7 of 18 results Jan 28, 2008 Nov 6, 2017
Arsenic 1005 Inorganic Chemical 4 of 16 results Jan 23, 2006 Jan 12, 2021
Nitrite 1041 Inorganic Chemical 3 of 34 results Jan 10, 2022 Jan 23, 2023
Selenium 1045 Inorganic Chemical 3 of 16 results Feb 14, 2005 Jan 12, 2021
Monochloroacetic Acid 2450 Organic Chemical 3 of 18 results Oct 27, 2008 Nov 6, 2017
Gross Alpha, Incl. Radon & U 4002 Radionuclide 2 of 2 results Jun 6, 2014 Sep 23, 2014
Gross Alpha Particle Activity 4109 Radionuclide 2 of 4 results Jun 25, 2012 Sep 11, 2012
Bromoform 2942 Organic Chemical 2 of 24 results Jul 31, 2006 Aug 25, 2008
Cadmium 1015 Inorganic Chemical 2 of 16 results Feb 14, 2005 Jan 23, 2006
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 34 results Jan 22, 2018 Jan 22, 2018
Nitrate 1040 Inorganic Chemical 1 of 34 results Jan 22, 2018 Jan 22, 2018
Calcium 1016 Inorganic Chemical 1 of 1 result Sep 29, 2017 Sep 29, 2017
Chloride 1017 Inorganic Chemical 1 of 1 result Sep 29, 2017 Sep 29, 2017
Iron 1028 Inorganic Chemical 1 of 1 result Sep 29, 2017 Sep 29, 2017
Magnesium 1031 Inorganic Chemical 1 of 1 result Sep 29, 2017 Sep 29, 2017
Manganese 1032 Inorganic Chemical 1 of 1 result Sep 29, 2017 Sep 29, 2017
Potassium 1042 Inorganic Chemical 1 of 1 result Sep 29, 2017 Sep 29, 2017
Sulfate 1055 Inorganic Chemical 1 of 3 results Sep 29, 2017 Sep 29, 2017
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
Color 1905 Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
Alkalinity, Total 1927 Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
Calculated Sodium NACA Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
PH, Field Result PHFD Water Quality 1 of 1 result Sep 29, 2017 Sep 29, 2017
Carbon Tetrachloride 2982 Organic Chemical 1 of 27 results Oct 16, 2013 Oct 16, 2013
Xylenes, Total 2955 Organic Chemical 1 of 27 results Jun 25, 2012 Jun 25, 2012
Cyanide 1024 Inorganic Chemical 1 of 14 results Feb 14, 2005 Feb 14, 2005

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 141–150 of 326 samples, newest first — collected June 16, 2014 to November 17, 2014. The summary above covers all 326.

56 results from the 10 samples listed here: 4 detected, 52 not detected. Across the whole record it is 424 of 1,449. 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 W/A, every result from 141 to 150 of 326 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
Nov 17, 2014 12:30
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
141118-033NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 17, 2014 12:30, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 17, 2014 12:30, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 17, 2014 12:30, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2014 – Dec 31, 2014
Collected
Sep 23, 2014 08:00
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
201409290002-GA
Laboratory
Radiation Safety Engineering
1 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Sep 23, 2014 08:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Jul 1, 2014 – Sep 30, 2014
Collected
Sep 23, 2014 08:00
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
201409290002
Laboratory
Radiation Safety Engineering
Not detected below 0.52 pci/l Minimum Reporting Level , sample collected Sep 23, 2014 08:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.225 pci/l Minimum Reporting Level , sample collected Sep 23, 2014 08:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.52 pci/l Minimum Reporting Level , sample collected Sep 23, 2014 08:00, sampling point TF102 Radium-228 4030 EPA method 904 Jul 1, 2014 – Sep 30, 2014
Collected
Sep 15, 2014 12:15
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
140916-002RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 15, 2014 12:15, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jul 1, 2014 – Sep 30, 2014
Collected
Jul 21, 2014 01:45
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
140722-020VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Benzene 2990 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Toluene 2991 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:45, sampling point TF102 Styrene 2996 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Collected
Jul 21, 2014 01:15
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
140722-019VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Benzene 2990 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Toluene 2991 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2014 01:15, sampling point TF101 Styrene 2996 EPA method 524.2 Jul 1, 2014 – Sep 30, 2014
Collected
Jul 2, 2014 02:50
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
140703-003CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jul 2, 2014 02:50, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jul 2, 2014 01:20
Sampling point
TF102 Treatment Facility TF102
Sample type
Routine
Lab sample
140703-002CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jul 2, 2014 01:20, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2014 – Dec 31, 2016
Collected
Jun 16, 2014 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140617-015PB
Laboratory
MSDH Lab
0.0318 mg/l , sample collected Jun 16, 2014 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 16, 2014 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jun 16, 2014 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140617-014PB
Laboratory
MSDH Lab
0.0809 mg/l , sample collected Jun 16, 2014 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.001 mg/l , sample collected Jun 16, 2014 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).