Chemical and radiological sample results

MS0240046 , Bernard Bayou Industrial District

20 of the 54 analytes this system has been tested for have been detected at least once, across 320 samples on record.

The other 34 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 320 samples on record, detections range from December 1, 1993 to February 7, 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 Bernard Bayou Industrial District, 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	100 of 130 results	Dec 1, 1993	Jul 17, 2023
Lead 1030	Inorganic Chemical	96 of 130 results	Dec 1, 1993	Jul 17, 2023
Barium 1010	Inorganic Chemical	31 of 31 results	Sep 15, 2003	Feb 11, 2025
Fluoride 1025	Inorganic Chemical	31 of 31 results	Sep 15, 2003	Feb 11, 2025
TTHM 2950	Organic Chemical	17 of 19 results	Jul 30, 2007	Feb 7, 2026
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	15 of 20 results	Jul 30, 2007	Feb 7, 2026
Chromium 1020	Inorganic Chemical	13 of 31 results	Sep 15, 2003	Oct 22, 2018
Chloroform 2941	Organic Chemical	12 of 14 results	Jul 30, 2007	Feb 7, 2026
Bromodichloromethane 2943	Organic Chemical	11 of 14 results	Jul 30, 2007	Feb 7, 2026
Dibromochloromethane 2944	Organic Chemical	11 of 14 results	Jul 30, 2007	Feb 7, 2026
Dichloroacetic Acid 2451	Organic Chemical	10 of 14 results	Jul 18, 2012	Feb 7, 2026
Nickel 1036	Inorganic Chemical	9 of 31 results	Sep 15, 2003	Feb 11, 2025
Trichloroacetic Acid 2452	Organic Chemical	7 of 14 results	Jul 18, 2012	Feb 7, 2026
Sulfate 1055	Inorganic Chemical	5 of 5 results	Sep 15, 2003	Feb 2, 2004
Cadmium 1015	Inorganic Chemical	4 of 31 results	Sep 15, 2003	Mar 7, 2005
Sodium 1052	Inorganic Chemical	3 of 3 results	Feb 23, 2021	Feb 23, 2021
Selenium 1045	Inorganic Chemical	3 of 31 results	Mar 7, 2005	Mar 7, 2005
Nitrate 1040	Inorganic Chemical	2 of 66 results	Aug 17, 2006	Aug 17, 2006
Monochloroacetic Acid 2450	Organic Chemical	1 of 14 results	Aug 1, 2018	Aug 1, 2018
Nitrite 1041	Inorganic Chemical	1 of 66 results	Aug 17, 2006	Aug 17, 2006

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 320 samples, newest first — collected July 17, 2023 to February 19, 2024. The summary above covers all 320.

50 results from the 10 samples listed here: 28 detected, 22 not detected. Across the whole record it is 382 of 1,514. 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 Bernard Bayou Industrial District, every result from 21 to 30 of 320 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 19, 2024 10:00 Sampling point SM1 Location withheld Sample type Routine Lab sample 810-94634-1 Laboratory Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Feb 19, 2024 10:00, sampling point SM1	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
7.1 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
2.5 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 19, 2024 10:00, sampling point SM1	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 19, 2024 10:00, sampling point SM1	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
9.6 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Jan 1, 2024 – Mar 31, 2024
15 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 19, 2024 10:00, sampling point SM1	Bromoform 2942 EPA method 524.2	Not recorded
4.4 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	Bromodichloromethane 2943 EPA method 524.2	Not recorded
1.6 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	Dibromochloromethane 2944 EPA method 524.2	Not recorded
21 ug/l , sample collected Feb 19, 2024 10:00, sampling point SM1	TTHM 2950 EPA method 524.2	Jan 1, 2024 – Mar 31, 2024
Collected Feb 12, 2024 10:00 Sampling point TF103 Treatment Plant T103 Sample type Routine Lab sample NI-240213-005 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 10:00, sampling point TF103	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 10:00, sampling point TF103	Nitrate 1040 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 10:00, sampling point TF103	Nitrite 1041 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Collected Feb 12, 2024 10:00 Sampling point TF102 Treatment Plant T102 Sample type Routine Lab sample NI-240213-006 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 10:00, sampling point TF102	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 10:00, sampling point TF102	Nitrate 1040 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 10:00, sampling point TF102	Nitrite 1041 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Collected Feb 12, 2024 09:50 Sampling point TF101 Treatment Plant T101 Sample type Routine Lab sample NI-240213-007 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 09:50, sampling point TF101	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 09:50, sampling point TF101	Nitrate 1040 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 12, 2024 09:50, sampling point TF101	Nitrite 1041 EPA method QC10107041C	Jan 1, 2024 – Dec 31, 2024
Collected Dec 18, 2023 11:20 Sampling point SM2 Location withheld Sample type Routine Lab sample 810-88931-2 Laboratory Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:20, sampling point SM2	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
1.7 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
1.1 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:20, sampling point SM2	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:20, sampling point SM2	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
2.8 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Oct 1, 2023 – Dec 31, 2023
3.6 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:20, sampling point SM2	Bromoform 2942 EPA method 524.2	Not recorded
2.3 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	Bromodichloromethane 2943 EPA method 524.2	Not recorded
1.7 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	Dibromochloromethane 2944 EPA method 524.2	Not recorded
7.6 ug/l , sample collected Dec 18, 2023 11:20, sampling point SM2	TTHM 2950 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Collected Dec 18, 2023 11:10 Sampling point SM1 Location withheld Sample type Routine Lab sample 810-88931-1 Laboratory Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:10, sampling point SM1	Monochloroacetic Acid 2450 EPA method 552.2	Not recorded
1.9 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	Dichloroacetic Acid 2451 EPA method 552.2	Not recorded
1.2 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	Trichloroacetic Acid 2452 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:10, sampling point SM1	Monobromoacetic Acid 2453 EPA method 552.2	Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:10, sampling point SM1	Dibromoacetic Acid 2454 EPA method 552.2	Not recorded
3.1 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Oct 1, 2023 – Dec 31, 2023
3.1 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	Chloroform 2941 EPA method 524.2	Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Dec 18, 2023 11:10, sampling point SM1	Bromoform 2942 EPA method 524.2	Not recorded
2.2 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	Bromodichloromethane 2943 EPA method 524.2	Not recorded
1.6 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	Dibromochloromethane 2944 EPA method 524.2	Not recorded
6.9 ug/l , sample collected Dec 18, 2023 11:10, sampling point SM1	TTHM 2950 EPA method 524.2	Oct 1, 2023 – Dec 31, 2023
Collected Jul 17, 2023 08:00 Sampling point LC0010 Location withheld Sample type Routine Lab sample PB-230718-022 Laboratory MSDH Lab
0.224 mg/l , sample collected Jul 17, 2023 08:00, sampling point LC0010	Copper, Free 1022 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 17, 2023 08:00, sampling point LC0010	Lead 1030 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
Collected Jul 17, 2023 08:00 Sampling point LC0009 Location withheld Sample type Routine Lab sample PB-230718-026 Laboratory MSDH Lab
0.0197 mg/l , sample collected Jul 17, 2023 08:00, sampling point LC0009	Copper, Free 1022 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
1.2 ug/l , sample collected Jul 17, 2023 08:00, sampling point LC0009	Lead 1030 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
Collected Jul 17, 2023 08:10 Sampling point LC0008 Location withheld Sample type Routine Lab sample PB-230718-027 Laboratory MSDH Lab
0.0834 mg/l , sample collected Jul 17, 2023 08:10, sampling point LC0008	Copper, Free 1022 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
2.1 ug/l , sample collected Jul 17, 2023 08:10, sampling point LC0008	Lead 1030 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
Collected Jul 17, 2023 08:15 Sampling point LC0007 Location withheld Sample type Routine Lab sample PB-230718-028 Laboratory MSDH Lab
0.0344 mg/l , sample collected Jul 17, 2023 08:15, sampling point LC0007	Copper, Free 1022 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023
0.5 ug/l , sample collected Jul 17, 2023 08:15, sampling point LC0007	Lead 1030 EPA method 200.8	Jan 1, 2021 – Dec 31, 2023

Collected
Feb 19, 2024 10:00

Sampling point
SM1 Location withheld

Sample type
Routine

Lab sample
810-94634-1

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
  7.1 ug/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  2.5 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
  9.6 ug/l
  
  Monitoring period
  Jan 1, 2024 – Mar 31, 2024
- Chloroform 2941 EPA method 524.2
  
  Result
  15 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
  4.4 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  1.6 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  21 ug/l
  
  Monitoring period
  Jan 1, 2024 – Mar 31, 2024
Collected
Feb 12, 2024 10:00

Sampling point
TF103 Treatment Plant T103

Sample type
Routine

Lab sample
NI-240213-005

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2024 – Dec 31, 2024
- 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 12, 2024 10:00

Sampling point
TF102 Treatment Plant T102

Sample type
Routine

Lab sample
NI-240213-006

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2024 – Dec 31, 2024
- 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 12, 2024 09:50

Sampling point
TF101 Treatment Plant T101

Sample type
Routine

Lab sample
NI-240213-007

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2024 – Dec 31, 2024
- 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
Dec 18, 2023 11:20

Sampling point
SM2 Location withheld

Sample type
Routine

Lab sample
810-88931-2

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
  1.7 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
  2.8 ug/l
  
  Monitoring period
  Oct 1, 2023 – Dec 31, 2023
- Chloroform 2941 EPA method 524.2
  
  Result
  3.6 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
  2.3 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  1.7 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  7.6 ug/l
  
  Monitoring period
  Oct 1, 2023 – Dec 31, 2023
Collected
Dec 18, 2023 11:10

Sampling point
SM1 Location withheld

Sample type
Routine

Lab sample
810-88931-1

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
  1.9 ug/l
  
  Monitoring period
  Not recorded
- Trichloroacetic Acid 2452 EPA method 552.2
  
  Result
  1.2 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
  3.1 ug/l
  
  Monitoring period
  Oct 1, 2023 – Dec 31, 2023
- Chloroform 2941 EPA method 524.2
  
  Result
  3.1 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
  2.2 ug/l
  
  Monitoring period
  Not recorded
- Dibromochloromethane 2944 EPA method 524.2
  
  Result
  1.6 ug/l
  
  Monitoring period
  Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  6.9 ug/l
  
  Monitoring period
  Oct 1, 2023 – Dec 31, 2023
Collected
Jul 17, 2023 08:00

Sampling point
LC0010 Location withheld

Sample type
Routine

Lab sample
PB-230718-022

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2023
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.224 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Jul 17, 2023 08:00

Sampling point
LC0009 Location withheld

Sample type
Routine

Lab sample
PB-230718-026

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2023
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0197 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  1.2 ug/l
Collected
Jul 17, 2023 08:10

Sampling point
LC0008 Location withheld

Sample type
Routine

Lab sample
PB-230718-027

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2023
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0834 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  2.1 ug/l
Collected
Jul 17, 2023 08:15

Sampling point
LC0007 Location withheld

Sample type
Routine

Lab sample
PB-230718-028

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2023
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.0344 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  0.5 ug/l

Routine (10).