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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

MS0140012 , Moore Bayou Water Association

25 of the 57 analytes this system has been tested for have been detected at least once, across 463 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 463 samples on record, detections range from November 23, 1993 to July 29, 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 Moore Bayou Water Association, 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 157 of 162 results Nov 23, 1993 Jun 20, 2023
Lead 1030 Inorganic Chemical 138 of 162 results Nov 23, 1993 Jun 20, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 94 of 116 results Sep 13, 2004 Jul 29, 2025
TTHM 2950 Organic Chemical 82 of 117 results Sep 13, 2004 Jul 29, 2025
Bromoform 2942 Organic Chemical 51 of 76 results May 15, 2006 Nov 26, 2018
Bromodichloromethane 2943 Organic Chemical 50 of 76 results May 15, 2006 Nov 26, 2018
Dibromochloromethane 2944 Organic Chemical 50 of 76 results May 15, 2006 Nov 26, 2018
Dibromoacetic Acid 2454 Organic Chemical 47 of 69 results Dec 14, 2005 Nov 26, 2018
Chloroform 2941 Organic Chemical 43 of 76 results May 15, 2006 Nov 26, 2018
Dichloroacetic Acid 2451 Organic Chemical 33 of 69 results Dec 14, 2005 Nov 26, 2018
Trichloroacetic Acid 2452 Organic Chemical 21 of 69 results Jan 29, 2008 Nov 26, 2018
Monobromoacetic Acid 2453 Organic Chemical 17 of 69 results Jan 29, 2008 Aug 28, 2017
Barium 1010 Inorganic Chemical 11 of 11 results May 14, 2002 Feb 3, 2025
Fluoride 1025 Inorganic Chemical 11 of 11 results May 14, 2002 Feb 3, 2025
Selenium 1045 Inorganic Chemical 11 of 11 results May 14, 2002 Feb 3, 2025
Arsenic 1005 Inorganic Chemical 9 of 11 results Jan 26, 2004 Feb 3, 2025
Chromium 1020 Inorganic Chemical 9 of 11 results May 14, 2002 Feb 3, 2025
Monochloroacetic Acid 2450 Organic Chemical 6 of 69 results Dec 14, 2005 Dec 1, 2016
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 24, 2019 Oct 21, 2024
Nickel 1036 Inorganic Chemical 3 of 11 results Mar 1, 2005 Apr 21, 2014
Nitrite 1041 Inorganic Chemical 2 of 22 results Jun 12, 2006 Jan 29, 2014
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 22 results Jun 12, 2006 Jun 12, 2006
Nitrate 1040 Inorganic Chemical 1 of 22 results Jun 12, 2006 Jun 12, 2006
Cadmium 1015 Inorganic Chemical 1 of 11 results Mar 1, 2005 Mar 1, 2005
Xylenes, Total 2955 Organic Chemical 1 of 13 results Jul 12, 2004 Jul 12, 2004

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 1–10 of 20 samples, newest first — collected February 3, 2025 to July 29, 2025. The summary above covers all 20.

20 results from the 10 samples listed here: 13 detected, 7 not detected. Across the whole record it is 852 of 1,706. 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 Moore Bayou Water Association, every result from 1 to 10 of 20 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
Jul 29, 2025 12:47
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-250730-002
Laboratory
MSDH Lab
17.3 ug/l , sample collected Jul 29, 2025 12:47, sampling point SM2 TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Jul 29, 2025 12:35
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-250730-001
Laboratory
MSDH Lab
15.8 ug/l , sample collected Jul 29, 2025 12:35, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Jul 29, 2025 12:47
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-250730-002
Laboratory
MSDH Lab
8.45 ug/l , sample collected Jul 29, 2025 12:47, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
Collected
Jul 29, 2025 12:35
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-250730-001
Laboratory
MSDH Lab
10.4 ug/l , sample collected Jul 29, 2025 12:35, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
Collected
Jun 2, 2025 12:27
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
CN-250603-017
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 2, 2025 12:27, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Apr 14, 2025 14:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-250415-009
Laboratory
MSDH Lab
14.6 ug/l , sample collected Apr 14, 2025 14:15, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 14, 2025 14:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-250415-008
Laboratory
MSDH Lab
14.4 ug/l , sample collected Apr 14, 2025 14:00, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 14, 2025 14:15
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-250415-010
Laboratory
MSDH Lab
26.1 ug/l , sample collected Apr 14, 2025 14:15, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 14, 2025 14:00
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-250415-009
Laboratory
MSDH Lab
23.3 ug/l , sample collected Apr 14, 2025 14:00, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Feb 3, 2025 12:20
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
IN-250204-007
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Feb 3, 2025 12:20, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0077 mg/l , sample collected Feb 3, 2025 12:20, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 12:20, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0017 mg/l , sample collected Feb 3, 2025 12:20, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.245 mg/l , sample collected Feb 3, 2025 12:20, sampling point TF101 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 Feb 3, 2025 12:20, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 12:20, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
0.003 mg/l , sample collected Feb 3, 2025 12:20, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 3, 2025 12:20, sampling point TF101 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 Feb 3, 2025 12:20, sampling point TF101 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 Feb 3, 2025 12:20, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).