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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

MS0220004 , Grenada-Bogue Basin/Holcomb

25 of the 56 analytes this system has been tested for have been detected at least once, across 351 samples on record.

The other 31 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 351 samples on record, detections range from September 16, 1993 to September 30, 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 Grenada-Bogue Basin/Holcomb, 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 123 of 140 results Sep 16, 1993 Sep 30, 2025
Lead 1030 Inorganic Chemical 70 of 140 results Sep 16, 1993 Sep 30, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 20 of 22 results May 26, 2004 Sep 25, 2025
TTHM 2950 Organic Chemical 20 of 20 results May 26, 2004 Sep 25, 2025
Barium 1010 Inorganic Chemical 20 of 20 results Jun 18, 2002 Feb 3, 2025
Fluoride 1025 Inorganic Chemical 19 of 20 results Jun 18, 2002 Feb 3, 2025
Dichloroacetic Acid 2451 Organic Chemical 16 of 16 results Sep 16, 2008 Sep 25, 2025
Chloroform 2941 Organic Chemical 15 of 15 results Jul 31, 2007 Sep 25, 2025
Bromodichloromethane 2943 Organic Chemical 14 of 15 results Jul 31, 2007 Sep 25, 2025
Chromium 1020 Inorganic Chemical 14 of 20 results Jun 18, 2002 Feb 3, 2025
Trichloroacetic Acid 2452 Organic Chemical 13 of 16 results Sep 16, 2008 Sep 25, 2025
Dibromochloromethane 2944 Organic Chemical 9 of 15 results Jul 31, 2007 Sep 25, 2025
Dibromoacetic Acid 2454 Organic Chemical 7 of 16 results Sep 10, 2014 May 13, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Dec 5, 2011 Jul 12, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 10 results Dec 5, 2011 Jul 12, 2012
Radium-226 4020 Radionuclide 5 of 10 results Dec 5, 2011 Jul 12, 2012
Bromoform 2942 Organic Chemical 4 of 15 results Jul 31, 2007 May 13, 2025
Nickel 1036 Inorganic Chemical 4 of 20 results Apr 2, 2008 Apr 7, 2014
Selenium 1045 Inorganic Chemical 4 of 20 results Feb 4, 2004 Apr 2, 2008
Cyanide 1024 Inorganic Chemical 2 of 20 results May 17, 2021 Jun 17, 2025
Monochloroacetic Acid 2450 Organic Chemical 2 of 16 results Sep 10, 2014 Aug 26, 2020
Arsenic 1005 Inorganic Chemical 2 of 20 results Apr 2, 2008 Apr 2, 2008
Xylenes, Total 2955 Organic Chemical 1 of 76 results Jun 1, 2009 Jun 1, 2009
Cadmium 1015 Inorganic Chemical 1 of 20 results Feb 28, 2005 Feb 28, 2005
Carbon Tetrachloride 2982 Organic Chemical 1 of 76 results Jul 20, 2004 Jul 20, 2004

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 171–180 of 351 samples, newest first — collected July 11, 2012 to January 30, 2013. The summary above covers all 351.

53 results from the 10 samples listed here: 10 detected, 43 not detected. Across the whole record it is 396 of 2,484. 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 Grenada-Bogue Basin/Holcomb, every result from 171 to 180 of 351 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
Jan 30, 2013 12:25
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
130131-026NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 30, 2013 12:25, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 30, 2013 12:25, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 30, 2013 12:25, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2013 – Dec 31, 2013
Collected
Jul 25, 2012 12:34
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120726-010VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, 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 25, 2012 12:34, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2011 – Dec 31, 2016
Collected
Jul 17, 2012 12:23
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
120718-007TH
Laboratory
MSDH Lab
2.18 ug/l , sample collected Jul 17, 2012 12:23, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 17, 2012 12:23, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 17, 2012 12:23, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 17, 2012 12:23, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
2.18 ug/l , sample collected Jul 17, 2012 12:23, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2011 – Dec 31, 2013
Collected
Jul 17, 2012 12:20
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
120718-007HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 12:20, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.007 mg/l , sample collected Jul 17, 2012 12:20, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 12:20, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 12:20, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 17, 2012 12:20, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.007 mg/l , sample collected Jul 17, 2012 12:20, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2011 – Dec 31, 2013
Collected
Jul 12, 2012 12:05
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
201210300268
Laboratory
Radiation Safety Engineering
0.6 pci/l , sample collected Jul 12, 2012 12:05, sampling point TF103 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.23 pci/l Minimum Reporting Level , sample collected Jul 12, 2012 12:05, sampling point TF103 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.196 pci/l Minimum Reporting Level , sample collected Jul 12, 2012 12:05, sampling point TF103 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.23 pci/l Minimum Reporting Level , sample collected Jul 12, 2012 12:05, sampling point TF103 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 12, 2012 12:28
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
201210300259
Laboratory
Radiation Safety Engineering
Not detected below 0.34 pci/l Minimum Reporting Level , sample collected Jul 12, 2012 12:28, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
0.3 pci/l , sample collected Jul 12, 2012 12:28, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
0.3 pci/l , sample collected Jul 12, 2012 12:28, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.2 pci/l Minimum Reporting Level , sample collected Jul 12, 2012 12:28, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 12:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
120712-034
Laboratory
Radiation Safety Engineering
0.6 pci/l , sample collected Jul 11, 2012 12:10, sampling point TF103 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.23 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 12:10, sampling point TF103 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.196 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 12:10, sampling point TF103 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.23 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 12:10, sampling point TF103 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 12:23
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120712-074
Laboratory
Radiation Safety Engineering
Not detected below 0.34 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 12:23, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
0.3 pci/l , sample collected Jul 11, 2012 12:23, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
0.3 pci/l , sample collected Jul 11, 2012 12:23, sampling point TF101 Radium-226 4020 EPA method 903.1 Jul 1, 2012 – Sep 30, 2012
Not detected below 0.2 pci/l Minimum Reporting Level , sample collected Jul 11, 2012 12:23, sampling point TF101 Radium-228 4030 EPA method 904.0 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 12:26
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120712-074RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2012 12:26, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012
Collected
Jul 11, 2012 12:13
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
120712-034RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2012 12:13, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jul 1, 2012 – Sep 30, 2012

Routine (10).