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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 101–110 of 291 samples, newest first — collected July 18, 2017 to August 8, 2017. The summary above covers all 291.

42 results from the 10 samples listed here: 18 detected, 24 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 101 to 110 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 8, 2017 12:20
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
170809-012TH
Laboratory
MSDH Lab
17.6 ug/l , sample collected Aug 8, 2017 12:20, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:20, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
5.54 ug/l , sample collected Aug 8, 2017 12:20, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.27 ug/l , sample collected Aug 8, 2017 12:20, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
24.4 ug/l , sample collected Aug 8, 2017 12:20, sampling point MRT000 TTHM 2950 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 12:45
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
170809-016VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Benzene 2990 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Toluene 2991 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 8, 2017 12:45, sampling point TF103 Styrene 2996 EPA method 524.2 Jul 1, 2017 – Sep 30, 2017
Collected
Jul 18, 2017 05:11
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-019PB
Laboratory
MSDH Lab
0.2955 mg/l , sample collected Jul 18, 2017 05:11, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0033 mg/l , sample collected Jul 18, 2017 05:11, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-018PB
Laboratory
MSDH Lab
0.0817 mg/l , sample collected Jul 18, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 18, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-017PB
Laboratory
MSDH Lab
0.2114 mg/l , sample collected Jul 18, 2017 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 18, 2017 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-016PB
Laboratory
MSDH Lab
0.2034 mg/l , sample collected Jul 18, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0011 mg/l , sample collected Jul 18, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017 05:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-015PB
Laboratory
MSDH Lab
0.1481 mg/l , sample collected Jul 18, 2017 05:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0016 mg/l , sample collected Jul 18, 2017 05:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-014PB
Laboratory
MSDH Lab
0.1293 mg/l , sample collected Jul 18, 2017 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0021 mg/l , sample collected Jul 18, 2017 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-013PB
Laboratory
MSDH Lab
0.4146 mg/l , sample collected Jul 18, 2017 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0021 mg/l , sample collected Jul 18, 2017 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Jul 18, 2017
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170719-012PB
Laboratory
MSDH Lab
0.1199 mg/l , sample collected Jul 18, 2017, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0018 mg/l , sample collected Jul 18, 2017, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017

Routine (10).