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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 21–30 of 305 samples, newest first — collected May 23, 2024 to September 20, 2024. The summary above covers all 305.

54 results from the 10 samples listed here: 32 detected, 22 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 5 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 21 to 30 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 20, 2024 10:15
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-240924-015
Laboratory
MSDH Lab
0.0794 mg/l , sample collected Sep 20, 2024 10:15, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.9 ug/l , sample collected Sep 20, 2024 10:15, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Sep 20, 2024 15:20
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-240924-013
Laboratory
MSDH Lab
0.17 mg/l , sample collected Sep 20, 2024 15:20, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
1.4 ug/l , sample collected Sep 20, 2024 15:20, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Sep 19, 2024 14:05
Sampling point
LC0016 Location withheld
Sample type
Routine
Lab sample
PB-240924-012
Laboratory
MSDH Lab
0.204 mg/l , sample collected Sep 19, 2024 14:05, sampling point LC0016 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
0.7 ug/l , sample collected Sep 19, 2024 14:05, sampling point LC0016 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Sep 19, 2024 11:15
Sampling point
TC0012 Outside Faucet
Sample type
Routine
Lab sample
PB-240924-011
Laboratory
MSDH Lab
0.23 mg/l , sample collected Sep 19, 2024 11:15, sampling point TC0012 Copper, Free 1022 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
1 ug/l , sample collected Sep 19, 2024 11:15, sampling point TC0012 Lead 1030 EPA method 200.8 Jan 1, 2022 – Dec 31, 2024
Collected
Sep 10, 2024 10:50
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-119551-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:50, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
1.6 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
1.6 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:50, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:50, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
3.2 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2024 – Sep 30, 2024
3.1 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:50, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
2.4 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.4 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.9 ug/l , sample collected Sep 10, 2024 10:50, sampling point SM2 TTHM 2950 EPA method 524.2 Jul 1, 2024 – Sep 30, 2024
Collected
Sep 10, 2024 10:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-119551-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2024 – Sep 30, 2024
3.1 ug/l , sample collected Sep 10, 2024 10:30, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 10, 2024 10:30, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
2.3 ug/l , sample collected Sep 10, 2024 10:30, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.5 ug/l , sample collected Sep 10, 2024 10:30, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.9 ug/l , sample collected Sep 10, 2024 10:30, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2024 – Sep 30, 2024
Collected
May 28, 2024 10:55
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-106216-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:55, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
1.3 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
1.1 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:55, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:55, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
2.4 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2024 – Jun 30, 2024
2.7 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:55, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
2.4 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.7 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.8 ug/l , sample collected May 28, 2024 10:55, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2024 – Jun 30, 2024
Collected
May 28, 2024 10:30
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-106216-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2024 – Jun 30, 2024
1.5 ug/l , sample collected May 28, 2024 10:30, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 28, 2024 10:30, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
1.4 ug/l , sample collected May 28, 2024 10:30, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.97 ug/l , sample collected May 28, 2024 10:30, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.87 ug/l , sample collected May 28, 2024 10:30, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2024 – Jun 30, 2024
Collected
May 23, 2024 11:05
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-240523-031
Laboratory
MSDH Lab
4.72 ug/l , sample collected May 23, 2024 11:05, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
May 23, 2024 11:05
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-240523-031
Laboratory
MSDH Lab
6.98 ug/l , sample collected May 23, 2024 11:05, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded

Routine (10).