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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 141–150 of 351 samples, newest first — collected September 10, 2014 to September 21, 2016. The summary above covers all 351.

27 results from the 10 samples listed here: 12 detected, 15 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 141 to 150 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
Sep 21, 2016 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160923-067PB
Laboratory
MSDH Lab
0.184 mg/l , sample collected Sep 21, 2016 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 Sep 21, 2016 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Sep 21, 2016 09:25
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160923-066PB
Laboratory
MSDH Lab
0.0807 mg/l , sample collected Sep 21, 2016 09:25, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0026 mg/l , sample collected Sep 21, 2016 09:25, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Sep 21, 2016 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160923-065PB
Laboratory
MSDH Lab
0.2354 mg/l , sample collected Sep 21, 2016 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0008 mg/l , sample collected Sep 21, 2016 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Sep 20, 2016 11:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160923-064PB
Laboratory
MSDH Lab
0.0644 mg/l , sample collected Sep 20, 2016 11:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0009 mg/l , sample collected Sep 20, 2016 11:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Sep 20, 2016
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
160923-063PB
Laboratory
MSDH Lab
0.0918 mg/l , sample collected Sep 20, 2016, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0023 mg/l , sample collected Sep 20, 2016, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Mar 28, 2016 13:45
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
160329-078NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 13:45, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 13:45, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 13:45, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Mar 28, 2016 14:00
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
160329-061NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 14:00, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 14:00, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2016 14:00, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Feb 2, 2015 14:35
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
150203-075NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 2, 2015 14:35, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 2, 2015 14:35, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 2, 2015 14:35, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Feb 2, 2015 14:25
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
150203-074NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 2, 2015 14:25, sampling point TF101 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 2, 2015 14:25, sampling point TF101 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 2, 2015 14:25, sampling point TF101 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Sep 10, 2014 01:46
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
140911-006TH
Laboratory
MSDH Lab
2.91 ug/l , sample collected Sep 10, 2014 01:46, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2014 01:46, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.58 ug/l , sample collected Sep 10, 2014 01:46, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2014 01:46, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
4.49 ug/l , sample collected Sep 10, 2014 01:46, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2014 – Dec 31, 2016

Routine (10).