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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 71–80 of 340 samples, newest first — collected July 21, 2021 to February 28, 2022. The summary above covers all 340.

68 results from the 10 samples listed here: 7 detected, 61 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 2 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 71 to 80 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
Feb 28, 2022 13:00
Sampling point
TF082 Treatment Facility TF082
Sample type
Routine
Lab sample
NI-220301-005
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 13:00, sampling point TF082 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 13:00, sampling point TF082 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 13:00, sampling point TF082 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Feb 28, 2022 13:30
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
NI-220301-004
Laboratory
MSDH Lab
0.142 mg/l , sample collected Feb 28, 2022 13:30, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
0.142 mg/l , sample collected Feb 28, 2022 13:30, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 13:30, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Feb 28, 2022 14:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-220301-003
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 14:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 14:00, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 28, 2022 14:00, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2022 – Dec 31, 2022
Collected
Feb 15, 2022 15:00
Sampling point
TF082 Treatment Facility TF082
Sample type
Routine
Lab sample
VO-220216-011
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Dichloromethane 2964 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Benzene 2990 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Toluene 2991 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 15, 2022 15:00, sampling point TF082 Styrene 2996 EPA method 524.2 Jan 1, 2022 – Dec 31, 2022
Collected
Dec 8, 2021 14:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-211209-008
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 8, 2021 14:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2021 – Dec 31, 2021
Collected
Dec 8, 2021 14:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-211209-006
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 8, 2021 14:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Oct 26, 2021 16:00
Sampling point
TF082 Treatment Facility TF082
Sample type
Routine
Lab sample
IN-211027-023
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Arsenic 1005 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
0.0039 mg/l , sample collected Oct 26, 2021 16:00, sampling point TF082 Barium 1010 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Cadmium 1015 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Chromium 1020 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
0.416 mg/l , sample collected Oct 26, 2021 16:00, sampling point TF082 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Mercury 1035 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Selenium 1045 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Antimony, Total 1074 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 26, 2021 16:00, sampling point TF082 Thallium, Total 1085 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Collected
Sep 13, 2021 14:00
Sampling point
TF082 Treatment Facility TF082
Sample type
Routine
Lab sample
VO-210914-014
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
0.637 ug/l , sample collected Sep 13, 2021 14:00, sampling point TF082 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Dichloromethane 2964 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Benzene 2990 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Toluene 2991 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 13, 2021 14:00, sampling point TF082 Styrene 2996 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Jul 21, 2021 07:00
Sampling point
LC0024 Location withheld
Sample type
Routine
Lab sample
PB-210722-035
Laboratory
MSDH Lab
0.0115 mg/l , sample collected Jul 21, 2021 07:00, sampling point LC0024 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2021 07:00, sampling point LC0024 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 21, 2021 07:20
Sampling point
LC0011 Location withheld
Sample type
Routine
Lab sample
PB-210722-024
Laboratory
MSDH Lab
0.0059 mg/l , sample collected Jul 21, 2021 07:20, sampling point LC0011 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 21, 2021 07:20, sampling point LC0011 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021

Routine (10).