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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

MS0450034 , Cmu - Lake Caroline

41 of the 73 analytes this system has been tested for have been detected at least once, across 305 samples on record.

The other 32 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 305 samples on record, detections range from October 6, 2003 to February 25, 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 Cmu - Lake Caroline, 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 63 of 63 results Aug 28, 2008 Sep 24, 2024
Lead 1030 Inorganic Chemical 56 of 63 results Aug 28, 2008 Sep 24, 2024
Barium 1010 Inorganic Chemical 34 of 34 results Oct 6, 2003 Mar 11, 2025
TTHM 2950 Organic Chemical 22 of 22 results Jul 12, 2004 Feb 25, 2026
Fluoride 1025 Inorganic Chemical 20 of 38 results Oct 6, 2003 Mar 18, 2024
Chloroform 2941 Organic Chemical 17 of 17 results Aug 20, 2007 Feb 25, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 15 of 21 results Jul 12, 2004 Feb 25, 2026
Bromodichloromethane 2943 Organic Chemical 15 of 17 results Aug 20, 2007 Feb 25, 2026
Chromium 1020 Inorganic Chemical 15 of 34 results Oct 6, 2003 Feb 6, 2024
Dibromochloromethane 2944 Organic Chemical 13 of 17 results Jul 23, 2013 Feb 25, 2026
Sodium 1052 Inorganic Chemical 11 of 11 results Aug 3, 2016 Feb 26, 2025
Dichloroacetic Acid 2451 Organic Chemical 9 of 15 results Jul 23, 2013 Feb 25, 2026
Trichloroacetic Acid 2452 Organic Chemical 8 of 15 results Jul 23, 2013 Feb 25, 2026
Sulfate 1055 Inorganic Chemical 8 of 8 results Oct 6, 2003 Apr 14, 2021
Nickel 1036 Inorganic Chemical 7 of 34 results Mar 10, 2004 Mar 17, 2021
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 13, 2011 Jul 18, 2012
Calcium 1016 Inorganic Chemical 4 of 4 results Aug 3, 2016 Apr 14, 2021
Chloride 1017 Inorganic Chemical 4 of 4 results Aug 3, 2016 Apr 14, 2021
Alkalinity, Total 1927 Water Quality 4 of 4 results Aug 3, 2016 Apr 14, 2021
Gross Alpha Particle Activity 4109 Radionuclide 4 of 4 results Dec 13, 2011 Jul 17, 2012
Conductivity @ 25 C Umhos/CM 1064 Water Quality 3 of 3 results Apr 14, 2021 Apr 14, 2021
Cyanide 1024 Inorganic Chemical 2 of 31 results Jun 3, 2015 Dec 9, 2020
Arsenic 1005 Inorganic Chemical 1 of 34 results Dec 8, 2020 Dec 8, 2020
Monochloroacetic Acid 2450 Organic Chemical 1 of 15 results Sep 15, 2020 Sep 15, 2020
Monobromoacetic Acid 2453 Organic Chemical 1 of 15 results Sep 15, 2020 Sep 15, 2020
Iron 1028 Inorganic Chemical 1 of 1 result Aug 3, 2016 Aug 3, 2016
Magnesium 1031 Inorganic Chemical 1 of 1 result Aug 3, 2016 Aug 3, 2016
Manganese 1032 Inorganic Chemical 1 of 1 result Aug 3, 2016 Aug 3, 2016
Potassium 1042 Inorganic Chemical 1 of 1 result Aug 3, 2016 Aug 3, 2016
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Aug 3, 2016 Aug 3, 2016
Carbon Dioxide 1901 Water Quality 1 of 1 result Aug 3, 2016 Aug 3, 2016
Color 1905 Water Quality 1 of 4 results Aug 3, 2016 Aug 3, 2016
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Aug 3, 2016 Aug 3, 2016
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Aug 3, 2016 Aug 3, 2016
Calculated Sodium NACA Water Quality 1 of 1 result Aug 3, 2016 Aug 3, 2016
PH, Field Result PHFD Water Quality 1 of 1 result Aug 3, 2016 Aug 3, 2016
Carbon Tetrachloride 2982 Organic Chemical 1 of 55 results Jun 23, 2014 Jun 23, 2014
Nitrite 1041 Inorganic Chemical 1 of 54 results Feb 27, 2013 Feb 27, 2013
Selenium 1045 Inorganic Chemical 1 of 34 results Jan 11, 2010 Jan 11, 2010
Xylenes, Total 2955 Organic Chemical 1 of 54 results Sep 17, 2009 Sep 17, 2009
Dichloromethane 2964 Organic Chemical 1 of 55 results Sep 17, 2009 Sep 17, 2009

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 305 samples, newest first — collected July 30, 2021 to September 22, 2021. The summary above covers all 305.

26 results from the 10 samples listed here: 13 detected, 13 not detected. Across the whole record it is 358 of 2,135. 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 6 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 Cmu - Lake Caroline, every result from 71 to 80 of 305 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 22, 2021 12:25
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-210923-008
Laboratory
MSDH Lab
13.3 ug/l , sample collected Sep 22, 2021 12:25, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2021 – Dec 31, 2021
Collected
Sep 21, 2021 10:55
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
RU-210922-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 21, 2021 10:55, sampling point TF103 Combined Uranium 4006 EPA method 200.8 Jul 1, 2021 – Sep 30, 2021
Collected
Sep 14, 2021 11:25
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
CN-210914-012
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 14, 2021 11:25, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2021 – Dec 31, 2021
Collected
Sep 13, 2021 13:58
Sampling point
TF103 Treatment Facility TF103
Sample type
Routine
Lab sample
IN-210914-002
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
0.0196 mg/l , sample collected Sep 13, 2021 13:58, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 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 Sep 13, 2021 13:58, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2021 13:58, sampling point TF103 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 Sep 13, 2021 13:58, sampling point TF103 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 Sep 13, 2021 13:58, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2021 – Dec 31, 2021
Collected
Jul 30, 2021 08:30
Sampling point
LC0007 Location withheld
Sample type
Routine
Lab sample
PB-210803-010
Laboratory
MSDH Lab
0.149 mg/l , sample collected Jul 30, 2021 08:30, sampling point LC0007 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
1.8 ug/l , sample collected Jul 30, 2021 08:30, sampling point LC0007 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 30, 2021 05:30
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-210803-009
Laboratory
MSDH Lab
0.213 mg/l , sample collected Jul 30, 2021 05:30, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.7 ug/l , sample collected Jul 30, 2021 05:30, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 30, 2021 06:30
Sampling point
LC0001 Location withheld
Sample type
Routine
Lab sample
PB-210803-008
Laboratory
MSDH Lab
0.26 mg/l , sample collected Jul 30, 2021 06:30, sampling point LC0001 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 30, 2021 06:30, sampling point LC0001 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 30, 2021 05:50
Sampling point
LC0015 Location withheld
Sample type
Routine
Lab sample
PB-210803-007
Laboratory
MSDH Lab
0.586 mg/l , sample collected Jul 30, 2021 05:50, sampling point LC0015 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
3.8 ug/l , sample collected Jul 30, 2021 05:50, sampling point LC0015 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 30, 2021 08:40
Sampling point
LC0002 Location withheld
Sample type
Routine
Lab sample
PB-210803-006
Laboratory
MSDH Lab
0.315 mg/l , sample collected Jul 30, 2021 08:40, sampling point LC0002 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
0.6 ug/l , sample collected Jul 30, 2021 08:40, sampling point LC0002 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
Collected
Jul 30, 2021 06:00
Sampling point
LC0018 Location withheld
Sample type
Routine
Lab sample
PB-210803-005
Laboratory
MSDH Lab
0.0648 mg/l , sample collected Jul 30, 2021 06:00, sampling point LC0018 Copper, Free 1022 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021
6.3 ug/l , sample collected Jul 30, 2021 06:00, sampling point LC0018 Lead 1030 EPA method 200.8 Jan 1, 2019 – Dec 31, 2021

Routine (10).