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; the list of samples further down is narrowed.

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

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

Choose a date range

The most recent samples, result by result

The table below lists 1–10 of 15 samples, newest first — collected February 26, 2025 to February 25, 2026. The summary above covers all 15.

39 results from the 10 samples listed here: 13 detected, 26 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 1 sampling point 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 1 to 10 of 15 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 25, 2026 11:30 Sampling point SM2 Location withheld Sample type Routine Lab sample 810-182127-1 Laboratory Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Feb 25, 2026 11:30, sampling point SM2	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
1.5 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
1.1 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 25, 2026 11:30, sampling point SM2	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 25, 2026 11:30, sampling point SM2	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
2.6 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Jan 1, 2026 – Dec 31, 2026
2.2 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 25, 2026 11:30, sampling point SM2	Bromoform 2942 EPA method 524.2	Not recorded
1.8 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	Bromodichloromethane 2943 EPA method 524.2	Not recorded
1.1 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	Dibromochloromethane 2944 EPA method 524.2	Not recorded
5.1 ug/l , sample collected Feb 25, 2026 11:30, sampling point SM2	TTHM 2950 EPA method 524.2	Jan 1, 2026 – Dec 31, 2026
Collected Dec 2, 2025 10:30 Sampling point SM2 Location withheld Sample type Routine Lab sample 810-173954-1 Laboratory Eurofins Eaton Analytical South Bend in
5.4 ug/l , sample collected Dec 2, 2025 10:30, sampling point SM2	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 2, 2025 10:30, sampling point SM2	Bromoform 2942 EPA method 524.2	Not recorded
3.2 ug/l , sample collected Dec 2, 2025 10:30, sampling point SM2	Bromodichloromethane 2943 EPA method 524.2	Not recorded
1.7 ug/l , sample collected Dec 2, 2025 10:30, sampling point SM2	Dibromochloromethane 2944 EPA method 524.2	Not recorded
10.3 ug/l , sample collected Dec 2, 2025 10:30, sampling point SM2	TTHM 2950 EPA method 524.2	Not recorded
Collected Sep 17, 2025 10:20 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample CN-250917-031 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 17, 2025 10:20, sampling point TF102	Cyanide 1024 EPA method QC10204001X	Jan 1, 2023 – Dec 31, 2025
Collected Sep 17, 2025 10:20 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample IN-250918-012 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2025 10:20, sampling point TF102	Mercury 1035 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Collected May 15, 2025 11:30 Sampling point TF103 Treatment Facility TF103 Sample type Routine Lab sample CN-250515-019 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 15, 2025 11:30, sampling point TF103	Cyanide 1024 EPA method QC10204001X	Jan 1, 2025 – Dec 31, 2025
Collected Mar 11, 2025 10:30 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample IN-250312-051 Laboratory MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Arsenic 1005 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
0.0169 mg/l , sample collected Mar 11, 2025 10:30, sampling point TF102	Barium 1010 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Cadmium 1015 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Chromium 1020 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Fluoride 1025 EPA method QC 10-109-12-2-A	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Selenium 1045 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Antimony, Total 1074 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Beryllium, Total 1075 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Thallium, Total 1085 EPA method 200.8	Jan 1, 2023 – Dec 31, 2025
Collected Mar 11, 2025 12:05 Sampling point TF103 Treatment Facility TF103 Sample type Routine Lab sample NI-250311-085 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 12:05, sampling point TF103	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 12:05, sampling point TF103	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 12:05, sampling point TF103	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Collected Mar 11, 2025 10:30 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample NI-250311-084 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 10:30, sampling point TF102	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Collected Mar 11, 2025 11:15 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NI-250311-083 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:15, sampling point TF101	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:15, sampling point TF101	Nitrate 1040 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 11, 2025 11:15, sampling point TF101	Nitrite 1041 EPA method QC10107041C	Jan 1, 2025 – Dec 31, 2025
Collected Feb 26, 2025 11:30 Sampling point TF103 Treatment Facility TF103 Sample type Routine Lab sample NA-250227-003 Laboratory MSDH Lab
54.5 mg/l , sample collected Feb 26, 2025 11:30, sampling point TF103	Sodium 1052 EPA method 200.7	Jan 1, 2023 – Dec 31, 2025

Collected
Feb 25, 2026 11:30

Sampling point
SM2 Location withheld

Sample type
Routine

Lab sample
810-182127-1

Laboratory
Eurofins Eaton Analytical South Bend in
- Monochloroacetic Acid 2450 EPA method 552.2
  
  Result
  Not detected below 2 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Dichloroacetic Acid 2451 EPA method 552.2
  
  Result
  1.5 ug/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  1.1 ug/l
  
  Monitoring period
  Not recorded
- Monobromoacetic Acid 2453 EPA method 552.2
  
  Result
  Not detected below 1 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Dibromoacetic Acid 2454 EPA method 552.2
  
  Result
  Not detected below 1 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  2.6 ug/l
  
  Monitoring period
  Jan 1, 2026 – Dec 31, 2026
- Chloroform 2941 EPA method 524.2
  
  Result
  2.2 ug/l
  
  Monitoring period
  Not recorded
- Bromoform 2942 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  1.8 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  1.1 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  5.1 ug/l
  
  Monitoring period
  Jan 1, 2026 – Dec 31, 2026
Collected
Dec 2, 2025 10:30

Sampling point
SM2 Location withheld

Sample type
Routine

Lab sample
810-173954-1

Laboratory
Eurofins Eaton Analytical South Bend in

Monitoring period
Not recorded
- Chloroform 2941 EPA method 524.2
  
  Result
  5.4 ug/l
- Bromoform 2942 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  3.2 ug/l
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  1.7 ug/l
- TTHM 2950 EPA method 524.2
  
  Result
  10.3 ug/l
Collected
Sep 17, 2025 10:20

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
CN-250917-031

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Sep 17, 2025 10:20

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
IN-250918-012

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
May 15, 2025 11:30

Sampling point
TF103 Treatment Facility TF103

Sample type
Routine

Lab sample
CN-250515-019

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Mar 11, 2025 10:30

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
IN-250312-051

Laboratory
MSDH Lab
- Arsenic 1005 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Barium 1010 EPA method 200.8
  
  Result
  0.0169 mg/l
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Chromium 1020 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Fluoride 1025 EPA method QC 10-109-12-2-A
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Nickel 1036 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Selenium 1045 EPA method 200.8
  
  Result
  Not detected below 0.0025 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2023 – Dec 31, 2025
Collected
Mar 11, 2025 12:05

Sampling point
TF103 Treatment Facility TF103

Sample type
Routine

Lab sample
NI-250311-085

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Mar 11, 2025 10:30

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
NI-250311-084

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Mar 11, 2025 11:15

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NI-250311-083

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2025 – Dec 31, 2025
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Feb 26, 2025 11:30

Sampling point
TF103 Treatment Facility TF103

Sample type
Routine

Lab sample
NA-250227-003

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2023 – Dec 31, 2025
- Sodium 1052 EPA method 200.7
  
  Result
  54.5 mg/l

Routine (10).