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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.

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

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 231–240 of 463 samples, newest first — collected August 16, 2011 to February 27, 2012. The summary above covers all 463.

61 results from the 10 samples listed here: 3 detected, 58 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.

Chemical and radiological sample results for Moore Bayou Water Association, every result from 231 to 240 of 463 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 27, 2012 01:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
120229-005TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 27, 2012 01:00, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 27, 2012 01:00, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 27, 2012 01:00, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 27, 2012 01:00, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Feb 27, 2012 01:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 27, 2012 01:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
120229-005HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Feb 27, 2012 01:10, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 27, 2012 01:10, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 27, 2012 01:10, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 27, 2012 01:10, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 27, 2012 01:10, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Feb 27, 2012 01:10, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 13, 2012 08:55
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120214-020
Laboratory
Radiation Safety Engineering
Not detected below 0.39 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 08:55, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.62 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 08:55, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.5 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 08:55, sampling point TF101 Radium-226 4020 EPA method 903.1 Jan 1, 2012 – Mar 31, 2012
Not detected below 0.62 pci/l Minimum Reporting Level , sample collected Feb 13, 2012 08:55, sampling point TF101 Radium-228 4030 EPA method 904.0 Jan 1, 2012 – Mar 31, 2012
Collected
Feb 13, 2012 08:55
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120214-020RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2012 08:55, sampling point TF101 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Mar 31, 2012
Collected
Jan 23, 2012 10:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
120124-027NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 23, 2012 10:30, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 23, 2012 10:30, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 23, 2012 10:30, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2012 – Dec 31, 2012
Collected
Dec 12, 2011 15:05
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
111213-045
Laboratory
Radiation Safety Engineering
Not detected below 0.39 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:05, sampling point TF101 Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 Not recorded
Not detected below 0.62 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:05, sampling point TF101 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.5 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:05, sampling point TF101 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.62 pci/l Minimum Reporting Level , sample collected Dec 12, 2011 15:05, sampling point TF101 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Collected
Nov 15, 2011 02:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
111116-012TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 4 ug/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 TTHM 2950 EPA method 524.2 Oct 1, 2011 – Dec 31, 2011
Collected
Nov 15, 2011 02:00
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
111116-012HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Nov 15, 2011 02:00, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Oct 1, 2011 – Dec 31, 2011
Collected
Aug 29, 2011 03:30
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
110830-015VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 29, 2011 03:30, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2010 – Dec 31, 2015
Collected
Aug 16, 2011 11:45
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
110817-008HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 16, 2011 11:45, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.004 mg/l , sample collected Aug 16, 2011 11:45, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 16, 2011 11:45, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Aug 16, 2011 11:45, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 16, 2011 11:45, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.005 mg/l , sample collected Aug 16, 2011 11:45, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jul 1, 2011 – Sep 30, 2011

Routine (10).