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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

MS0130023 , Siloam W/A #6-Una System

19 of the 59 analytes this system has been tested for have been detected at least once, across 313 samples on record.

The other 40 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 313 samples on record, detections range from October 10, 1993 to February 3, 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 Siloam W/A #6-Una System, 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 114 of 142 results Oct 10, 1993 Aug 9, 2023
Lead 1030 Inorganic Chemical 94 of 142 results Oct 11, 1993 Aug 9, 2023
Barium 1010 Inorganic Chemical 24 of 24 results Mar 19, 2002 Feb 3, 2025
Fluoride 1025 Inorganic Chemical 24 of 24 results Mar 19, 2002 Feb 3, 2025
Chromium 1020 Inorganic Chemical 16 of 24 results Mar 19, 2002 Feb 3, 2025
Arsenic 1005 Inorganic Chemical 10 of 24 results Jan 23, 2006 Feb 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 9 of 25 results Jul 9, 2007 Mar 20, 2023
Nickel 1036 Inorganic Chemical 8 of 24 results Feb 14, 2005 Apr 23, 2014
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 16, 2019 Oct 15, 2024
Selenium 1045 Inorganic Chemical 6 of 24 results Feb 14, 2005 Mar 26, 2008
Cadmium 1015 Inorganic Chemical 4 of 24 results Feb 14, 2005 Jan 23, 2006
TTHM 2950 Organic Chemical 3 of 23 results Jul 9, 2007 Mar 11, 2024
Monobromoacetic Acid 2453 Organic Chemical 3 of 12 results Aug 12, 2008 Jul 22, 2020
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 47 results Jan 18, 2023 Jan 18, 2023
Nitrate 1040 Inorganic Chemical 2 of 47 results Jan 18, 2023 Jan 18, 2023
Nitrite 1041 Inorganic Chemical 2 of 47 results Jan 10, 2022 Jan 10, 2022
Monochloroacetic Acid 2450 Organic Chemical 2 of 12 results Jul 16, 2018 Jul 22, 2020
Gross Alpha Particle Activity 4109 Radionuclide 2 of 4 results Jun 27, 2012 Sep 13, 2012
Bromoform 2942 Organic Chemical 1 of 12 results Aug 31, 2011 Aug 31, 2011

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 131–140 of 313 samples, newest first — collected April 24, 2012 to October 29, 2012. The summary above covers all 313.

61 results from the 10 samples listed here: 2 detected, 59 not detected. Across the whole record it is 332 of 1,274. 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 Siloam W/A #6-Una System, every result from 131 to 140 of 313 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 29, 2012 01:57
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
121030-017NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 29, 2012 01:57, 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 Oct 29, 2012 01:57, 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 Oct 29, 2012 01:57, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Sep 13, 2012 14:12
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
201212280275
Laboratory
Radiation Safety Engineering
0.6 pci/l , sample collected Sep 13, 2012 14:12, sampling point TF102 Gross Alpha Particle Activity 4109 EPA method 00-02 Not recorded
Collected
Jul 12, 2012 03:53
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
120713-017VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:53, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Jul 12, 2012 03:35
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120713-004VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 12, 2012 03:35, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Jul 11, 2012 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201211120021
Laboratory
Radiation Safety Engineering
Not detected below 0.36 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 14:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 14:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 14:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 14:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 14:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120711-087
Laboratory
Radiation Safety Engineering
Not detected below 0.36 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:10, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:10, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:10, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 14:10, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 14:10
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120711-087RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2012 14:10, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Jun 27, 2012 13:13
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
201208140008
Laboratory
Radiation Safety Engineering
0.9 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 Jun 27, 2012 13:13, sampling point TF102 Gross Alpha Particle Activity 4109 EPA method 00-02 Jan 1, 2012 – Dec 31, 2020
Collected
Apr 24, 2012 12:31
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120425-012
Laboratory
Radiation Safety Engineering
Not detected below 0.36 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 12:31, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 12:31, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 12:31, sampling point TF101 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.42 pci/l Minimum Reporting Level , sample collected Apr 24, 2012 12:31, sampling point TF101 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 24, 2012 12:32
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120425-012RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 24, 2012 12:32, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012

Routine (10).