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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

MS0430029 , Topisaw Creek

26 of the 57 analytes this system has been tested for have been detected at least once, across 340 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 340 samples on record, detections range from October 6, 2003 to February 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 Topisaw Creek, 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 142 of 142 results Aug 30, 2007 Jul 30, 2024
Lead 1030 Inorganic Chemical 42 of 142 results Aug 30, 2007 Jul 30, 2024
Barium 1010 Inorganic Chemical 29 of 29 results Oct 6, 2003 Mar 10, 2025
Fluoride 1025 Inorganic Chemical 16 of 29 results Oct 6, 2003 Mar 10, 2025
Nickel 1036 Inorganic Chemical 16 of 29 results Oct 6, 2003 Mar 10, 2025
Chromium 1020 Inorganic Chemical 14 of 29 results Mar 10, 2004 Feb 6, 2024
Nitrate 1040 Inorganic Chemical 13 of 56 results May 24, 2004 Feb 23, 2026
Nitrate-Nitrite 1038 Inorganic Chemical 12 of 56 results Jul 17, 2006 Feb 23, 2026
Arsenic 1005 Inorganic Chemical 11 of 29 results Oct 6, 2003 Mar 10, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 11 of 11 results Mar 5, 2012 Jan 18, 2018
Sodium 1052 Inorganic Chemical 9 of 9 results Sep 16, 2019 Feb 10, 2025
TTHM 2950 Organic Chemical 5 of 19 results Aug 23, 2007 Dec 1, 2025
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 11 results Mar 5, 2012 Oct 3, 2012
Radium-228 4030 Radionuclide 5 of 11 results Mar 5, 2012 Oct 3, 2012
Chloroform 2941 Organic Chemical 4 of 15 results Sep 30, 2009 Dec 1, 2025
Selenium 1045 Inorganic Chemical 4 of 29 results Mar 10, 2004 Mar 8, 2006
Bromodichloromethane 2943 Organic Chemical 2 of 15 results Sep 30, 2009 Dec 1, 2025
Dibromochloromethane 2944 Organic Chemical 2 of 15 results Sep 30, 2009 Dec 1, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 2 of 20 results Sep 30, 2009 May 21, 2024
Cadmium 1015 Inorganic Chemical 2 of 29 results Mar 28, 2005 Mar 28, 2005
Sulfate 1055 Inorganic Chemical 2 of 4 results Oct 6, 2003 Mar 10, 2004
Xylenes, Total 2955 Organic Chemical 1 of 29 results Sep 13, 2021 Sep 13, 2021
Radium-226 4020 Radionuclide 1 of 11 results Jan 18, 2018 Jan 18, 2018
Dichloroacetic Acid 2451 Organic Chemical 1 of 15 results Sep 30, 2009 Sep 30, 2009
Monobromoacetic Acid 2453 Organic Chemical 1 of 15 results Aug 23, 2007 Aug 23, 2007
Dichloromethane 2964 Organic Chemical 1 of 29 results Aug 12, 2004 Aug 12, 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 21–30 of 340 samples, newest first — collected July 30, 2024 to July 30, 2024. The summary above covers all 340.

20 results from the 10 samples listed here: 13 detected, 7 not detected. Across the whole record it is 353 of 1,647. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 9 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Topisaw Creek, every result from 21 to 30 of 340 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
Jul 30, 2024 08:30
Sampling point
LC0039 Location withheld
Sample type
Routine
Lab sample
PB-240731-148
Laboratory
MSDH Lab
0.012 mg/l , sample collected Jul 30, 2024 08:30, sampling point LC0039 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 08:30, sampling point LC0039 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 07:30
Sampling point
LC0036 Location withheld
Sample type
Routine
Lab sample
PB-240731-147
Laboratory
MSDH Lab
0.0088 mg/l , sample collected Jul 30, 2024 07:30, sampling point LC0036 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
1.3 ug/l , sample collected Jul 30, 2024 07:30, sampling point LC0036 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 06:00
Sampling point
LC0038 Location withheld
Sample type
Routine
Lab sample
PB-240731-146
Laboratory
MSDH Lab
0.0356 mg/l , sample collected Jul 30, 2024 06:00, sampling point LC0038 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
1 ug/l , sample collected Jul 30, 2024 06:00, sampling point LC0038 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 06:30
Sampling point
LC0034 Location withheld
Sample type
Routine
Lab sample
PB-240731-145
Laboratory
MSDH Lab
0.0047 mg/l , sample collected Jul 30, 2024 06:30, sampling point LC0034 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 06:30, sampling point LC0034 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 06:15
Sampling point
LC0033 Location withheld
Sample type
Routine
Lab sample
PB-240731-144
Laboratory
MSDH Lab
0.0042 mg/l , sample collected Jul 30, 2024 06:15, sampling point LC0033 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 06:15, sampling point LC0033 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 06:30
Sampling point
LC0031 Location withheld
Sample type
Routine
Lab sample
PB-240731-143
Laboratory
MSDH Lab
0.0897 mg/l , sample collected Jul 30, 2024 06:30, sampling point LC0031 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
4.6 ug/l , sample collected Jul 30, 2024 06:30, sampling point LC0031 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 08:00
Sampling point
LC0030 Location withheld
Sample type
Routine
Lab sample
PB-240731-142
Laboratory
MSDH Lab
0.0374 mg/l , sample collected Jul 30, 2024 08:00, sampling point LC0030 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 08:00, sampling point LC0030 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 08:20
Sampling point
LC0029 Location withheld
Sample type
Routine
Lab sample
PB-240731-141
Laboratory
MSDH Lab
0.186 mg/l , sample collected Jul 30, 2024 08:20, sampling point LC0029 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 08:20, sampling point LC0029 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 06:15
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
PB-240731-140
Laboratory
MSDH Lab
0.0121 mg/l , sample collected Jul 30, 2024 06:15, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 06:15, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Jul 30, 2024 07:10
Sampling point
LC0014 Location withheld
Sample type
Routine
Lab sample
PB-240731-139
Laboratory
MSDH Lab
0.0041 mg/l , sample collected Jul 30, 2024 07:10, sampling point LC0014 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 30, 2024 07:10, sampling point LC0014 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024

Routine (10).