Chemical and radiological sample results

MS0310007 , Louin Water Works

41 of the 72 analytes this system has been tested for have been detected at least once, across 256 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 256 samples on record, detections range from November 24, 2003 to September 18, 2025. 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 Louin Water Works, 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	60 of 60 results	Jul 24, 2007	Jul 18, 2023
Lead 1030	Inorganic Chemical	55 of 60 results	Jul 24, 2007	Jul 18, 2023
Barium 1010	Inorganic Chemical	19 of 19 results	Nov 24, 2003	Feb 25, 2025
TTHM 2950	Organic Chemical	12 of 17 results	Jun 20, 2007	Sep 18, 2025
Chromium 1020	Inorganic Chemical	11 of 19 results	Mar 11, 2004	Feb 6, 2024
Chloroform 2941	Organic Chemical	9 of 14 results	Mar 12, 2024	Sep 18, 2025
Xylenes, Total 2955	Organic Chemical	9 of 62 results	Sep 10, 2008	Apr 13, 2021
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	8 of 17 results	Jun 20, 2007	Sep 18, 2025
Sodium 1052	Inorganic Chemical	8 of 8 results	May 25, 2017	Feb 4, 2025
Sulfate 1055	Inorganic Chemical	6 of 6 results	Nov 24, 2003	May 25, 2017
Ethylbenzene 2992	Organic Chemical	5 of 62 results	Sep 10, 2008	Mar 4, 2009
Dichloroacetic Acid 2451	Organic Chemical	4 of 13 results	Sep 10, 2008	Sep 18, 2025
Fluoride 1025	Inorganic Chemical	4 of 21 results	Jan 12, 2009	May 17, 2022
Trichloroacetic Acid 2452	Organic Chemical	3 of 13 results	Aug 14, 2024	Sep 18, 2025
Bromodichloromethane 2943	Organic Chemical	3 of 14 results	Aug 14, 2024	Sep 18, 2025
Dibromochloromethane 2944	Organic Chemical	3 of 14 results	Aug 14, 2024	Sep 18, 2025
Cadmium 1015	Inorganic Chemical	3 of 19 results	Nov 24, 2003	Mar 11, 2004
Monochloroacetic Acid 2450	Organic Chemical	2 of 13 results	Sep 10, 2008	Aug 7, 2018
Nitrate-Nitrite 1038	Inorganic Chemical	2 of 44 results	Feb 20, 2018	Feb 20, 2018
Nitrite 1041	Inorganic Chemical	2 of 44 results	Feb 20, 2018	Feb 20, 2018
Calcium 1016	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Chloride 1017	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Iron 1028	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Magnesium 1031	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Manganese 1032	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Potassium 1042	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Residue, Total, Filterable 1057	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Alkalinity, Caco3 Stability 1067	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Carbon Dioxide 1901	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Color 1905	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Hardness, Total (As Caco3) 1915	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Alkalinity, Total 1927	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Iron, Field Result FEFD	Inorganic Chemical	2 of 2 results	May 25, 2017	May 25, 2017
Calculated Sodium NACA	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
PH, Field Result PHFD	Water Quality	2 of 2 results	May 25, 2017	May 25, 2017
Nickel 1036	Inorganic Chemical	2 of 19 results	Mar 11, 2004	Mar 11, 2004
Bromoform 2942	Organic Chemical	1 of 14 results	Nov 20, 2024	Nov 20, 2024
Dibromoacetic Acid 2454	Organic Chemical	1 of 13 results	Aug 14, 2024	Aug 14, 2024
Cyanide 1024	Inorganic Chemical	1 of 20 results	Sep 14, 2009	Sep 14, 2009
Monobromoacetic Acid 2453	Organic Chemical	1 of 13 results	Sep 10, 2008	Sep 10, 2008
Selenium 1045	Inorganic Chemical	1 of 19 results	Nov 24, 2003	Nov 24, 2003

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

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The most recent samples, result by result

The table below lists 11–12 of 12 samples, newest first — collected November 20, 2024 to November 20, 2024. The summary above covers all 12.

22 results from the 2 samples listed here: 10 detected, 12 not detected. 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 Louin Water Works, every result from 11 to 12 of 12 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 Nov 20, 2024 08:00 Sampling point SM2 Location withheld Sample type Routine Lab sample 810-129003-2 Laboratory Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Oct 1, 2024 – Dec 31, 2024
0.84 ug/l , sample collected Nov 20, 2024 08:00, sampling point SM2	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Bromoform 2942 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Bromodichloromethane 2943 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:00, sampling point SM2	Dibromochloromethane 2944 EPA method 524.2	Not recorded
0.84 ug/l , sample collected Nov 20, 2024 08:00, sampling point SM2	TTHM 2950 EPA method 524.2	Oct 1, 2024 – Dec 31, 2024
Collected Nov 20, 2024 08:30 Sampling point SM1 Location withheld Sample type Routine Lab sample 810-129003-1 Laboratory Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:30, sampling point SM1	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
1.3 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
1.3 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:30, sampling point SM1	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 20, 2024 08:30, sampling point SM1	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
2.6 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Oct 1, 2024 – Dec 31, 2024
3.7 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Chloroform 2941 EPA method 524.2	Not recorded
0.53 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Bromoform 2942 EPA method 524.2	Not recorded
3.6 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Bromodichloromethane 2943 EPA method 524.2	Not recorded
3.2 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	Dibromochloromethane 2944 EPA method 524.2	Not recorded
11.03 ug/l , sample collected Nov 20, 2024 08:30, sampling point SM1	TTHM 2950 EPA method 524.2	Oct 1, 2024 – Dec 31, 2024

Collected
Nov 20, 2024 08:00

Sampling point
SM2 Location withheld

Sample type
Routine

Lab sample
810-129003-2

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
  Not detected below 1 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  Not detected below 1 ug/l Minimum Reporting Level
  
  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
  Not detected below 2 ug/l Minimum Reporting Level
  
  Monitoring period
  Oct 1, 2024 – Dec 31, 2024
- Chloroform 2941 EPA method 524.2
  
  Result
  0.84 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
  Not detected below 0.5 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  0.84 ug/l
  
  Monitoring period
  Oct 1, 2024 – Dec 31, 2024
Collected
Nov 20, 2024 08:30

Sampling point
SM1 Location withheld

Sample type
Routine

Lab sample
810-129003-1

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
  1.3 ug/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  1.3 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
  Oct 1, 2024 – Dec 31, 2024
- Chloroform 2941 EPA method 524.2
  
  Result
  3.7 ug/l
  
  Monitoring period
  Not recorded
- Bromoform 2942 EPA method 524.2
  
  Result
  0.53 ug/l
  
  Monitoring period
  Not recorded
- Bromodichloromethane 2943 EPA method 524.2
  
  Result
  3.6 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  3.2 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  11.03 ug/l
  
  Monitoring period
  Oct 1, 2024 – Dec 31, 2024

Routine (2).