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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

MS0260014 , South Holmes W/A #1

21 of the 57 analytes this system has been tested for have been detected at least once, across 256 samples on record.

The other 36 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 256 samples on record, detections range from November 10, 1993 to February 10, 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 South Holmes W/A #1, 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 84 of 96 results Nov 10, 1993 Jul 11, 2023
Lead 1030 Inorganic Chemical 45 of 96 results Nov 10, 1993 Jul 11, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Sep 17, 2003 Feb 11, 2025
Fluoride 1025 Inorganic Chemical 12 of 20 results Mar 14, 2005 Feb 11, 2025
Nitrite 1041 Inorganic Chemical 9 of 50 results Aug 10, 2005 Feb 10, 2026
Sodium 1052 Inorganic Chemical 9 of 9 results Sep 25, 2019 Feb 6, 2024
Chromium 1020 Inorganic Chemical 9 of 20 results Sep 17, 2003 Oct 30, 2018
Nitrate-Nitrite 1038 Inorganic Chemical 8 of 50 results Feb 14, 2017 Feb 11, 2025
TTHM 2950 Organic Chemical 8 of 13 results Jun 7, 2004 Nov 5, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 13 results Aug 6, 2007 Nov 5, 2024
Chloroform 2941 Organic Chemical 5 of 10 results Sep 22, 2008 Nov 5, 2024
Nitrate 1040 Inorganic Chemical 5 of 50 results Feb 14, 2017 Mar 19, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Dec 6, 2011 Jul 11, 2012
Dichloroacetic Acid 2451 Organic Chemical 4 of 9 results Jun 17, 2013 Nov 5, 2024
Trichloroacetic Acid 2452 Organic Chemical 4 of 9 results Jun 17, 2013 Nov 5, 2024
Bromodichloromethane 2943 Organic Chemical 4 of 10 results Sep 22, 2008 Nov 5, 2024
Selenium 1045 Inorganic Chemical 2 of 20 results Mar 14, 2005 Feb 6, 2006
Sulfate 1055 Inorganic Chemical 2 of 2 results Sep 17, 2003 Feb 9, 2004
Dibromochloromethane 2944 Organic Chemical 1 of 10 results Aug 7, 2024 Aug 7, 2024
Monochloroacetic Acid 2450 Organic Chemical 1 of 9 results Aug 1, 2018 Aug 1, 2018
Nickel 1036 Inorganic Chemical 1 of 20 results Apr 14, 2008 Apr 14, 2008

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 256 samples, newest first — collected April 16, 2012 to August 21, 2012. The summary above covers all 256.

48 results from the 10 samples listed here: 3 detected, 45 not detected. Across the whole record it is 244 of 1,194. 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 South Holmes W/A #1, every result from 141 to 150 of 256 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 21, 2012 01:00
Sampling point
TF102 Treatment PLNT T102
Sample type
Routine
Lab sample
120822-005VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Benzene 2990 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Toluene 2991 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 21, 2012 01:00, sampling point TF102 Styrene 2996 EPA method 524.2 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 13:00
Sampling point
TF102 Treatment PLNT T102
Sample type
Routine
Lab sample
201210150016
Laboratory
Radiation Safety Engineering
0.7 pci/l , sample collected Jul 11, 2012 13:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.285 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 13:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201210150010
Laboratory
Radiation Safety Engineering
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.214 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 13:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 13:30
Sampling point
TF102 Treatment PLNT T102
Sample type
Routine
Lab sample
120711-089
Laboratory
Radiation Safety Engineering
0.7 pci/l , sample collected Jul 10, 2012 13:30, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.285 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120711-116
Laboratory
Radiation Safety Engineering
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.214 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 13:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120711-116RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 10, 2012 13:30
Sampling point
TF102 Treatment PLNT T102
Sample type
Routine
Lab sample
120711-089RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 10, 2012 13:30, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Apr 16, 2012 14:00
Sampling point
TF102 Treatment PLNT T102
Sample type
Routine
Lab sample
120417-031
Laboratory
Radiation Safety Engineering
0.7 pci/l , sample collected Apr 16, 2012 14:00, sampling point TF102 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.285 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.32 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 16, 2012 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120417-086
Laboratory
Radiation Safety Engineering
Not detected below 0.4 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.214 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF101 Radium-226 4020 EPA method 903.1 Apr 1, 2012 – Jun 30, 2012
Not detected below 0.25 pci/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF101 Radium-228 4030 EPA method 904.0 Apr 1, 2012 – Jun 30, 2012
Collected
Apr 16, 2012 14:00
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120417-086RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 16, 2012 14:00, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Apr 1, 2012 – Jun 30, 2012

Routine (10).