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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 211–220 of 326 samples, newest first — collected April 14, 2009 to October 7, 2009. The summary above covers all 326.

27 results from the 10 samples listed here: 15 detected, 12 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 211 to 220 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
Oct 7, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091008-010PB
Laboratory
MSDH Lab
0.0672 mg/l , sample collected Oct 7, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 7, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 7, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091008-009PB
Laboratory
MSDH Lab
0.0124 mg/l , sample collected Oct 7, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 7, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 7, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091008-008PB
Laboratory
MSDH Lab
0.296 mg/l , sample collected Oct 7, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0007 mg/l , sample collected Oct 7, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Oct 7, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
091008-007PB
Laboratory
MSDH Lab
0.0959 mg/l , sample collected Oct 7, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
0.0007 mg/l , sample collected Oct 7, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2009 – Dec 31, 2009
Collected
Apr 28, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090429-004TH
Laboratory
MSDH Lab
3.18 ug/l , sample collected Apr 28, 2009, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 28, 2009, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.11 ug/l , sample collected Apr 28, 2009, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Apr 28, 2009, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
4.29 ug/l , sample collected Apr 28, 2009, sampling point MRT000 TTHM 2950 EPA method 524.2 Apr 1, 2009 – Jun 30, 2009
Collected
Apr 28, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090429-004HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Apr 28, 2009, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Apr 28, 2009, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 28, 2009, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 28, 2009, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Apr 28, 2009, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. , sample collected Apr 28, 2009, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Apr 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-119PB
Laboratory
MSDH Lab
0.0389 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-118PB
Laboratory
MSDH Lab
0.0087 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-117PB
Laboratory
MSDH Lab
0.1008 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Collected
Apr 14, 2009
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
090415-116PB
Laboratory
MSDH Lab
0.0114 mg/l , sample collected Apr 14, 2009, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 14, 2009, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Jun 30, 2009

Routine (10).