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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

MS0240009 , City of Pass Christian

44 of the 74 analytes this system has been tested for have been detected at least once, across 686 samples on record.

The other 30 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 686 samples on record, detections range from July 28, 1992 to May 18, 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 City of Pass Christian, 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
Lead 1030 Inorganic Chemical 292 of 353 results Jul 28, 1992 Jul 22, 2024
Copper, Free 1022 Inorganic Chemical 263 of 353 results Jul 28, 1992 Jul 23, 2024
TTHM 2950 Organic Chemical 44 of 44 results Sep 13, 2004 May 18, 2026
Fluoride 1025 Inorganic Chemical 40 of 40 results Sep 10, 2003 Feb 11, 2025
Barium 1010 Inorganic Chemical 39 of 39 results Sep 10, 2003 Feb 11, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 38 of 40 results Sep 13, 2004 Mar 17, 2025
Chloroform 2941 Organic Chemical 37 of 37 results Sep 14, 2006 May 18, 2026
Bromodichloromethane 2943 Organic Chemical 34 of 37 results Sep 14, 2006 May 18, 2026
Dichloroacetic Acid 2451 Organic Chemical 29 of 32 results Jun 23, 2008 Nov 6, 2024
Trichloroacetic Acid 2452 Organic Chemical 29 of 32 results Jun 23, 2008 Nov 6, 2024
Chromium 1020 Inorganic Chemical 27 of 39 results Sep 10, 2003 Apr 26, 2022
Dibromochloromethane 2944 Organic Chemical 22 of 37 results Sep 14, 2006 May 18, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 5, 2012 Oct 2, 2012
Sodium 1052 Inorganic Chemical 9 of 9 results Mar 26, 2008 Jan 29, 2024
Selenium 1045 Inorganic Chemical 6 of 39 results Feb 4, 2004 May 22, 2017
Nickel 1036 Inorganic Chemical 6 of 39 results Apr 9, 2008 Apr 7, 2014
Gross Alpha Particle Activity 4109 Radionuclide 6 of 10 results Jun 28, 2012 Sep 16, 2013
Dibromoacetic Acid 2454 Organic Chemical 6 of 32 results Jun 23, 2008 Jun 17, 2013
Monochloroacetic Acid 2450 Organic Chemical 5 of 32 results Dec 7, 2009 Aug 1, 2018
Sulfate 1055 Inorganic Chemical 5 of 9 results Sep 10, 2003 Feb 4, 2004
Arsenic 1005 Inorganic Chemical 4 of 39 results Mar 9, 2005 Jan 8, 2024
Cyanide 1024 Inorganic Chemical 3 of 39 results Apr 9, 2008 May 12, 2021
Monobromoacetic Acid 2453 Organic Chemical 2 of 32 results Nov 13, 2017 Aug 1, 2018
Gross Alpha, Excl. Radon & U 4000 Radionuclide 2 of 2 results Sep 28, 2011 Dec 5, 2011
Combined Uranium 4006 Radionuclide 2 of 20 results Sep 28, 2011 Dec 5, 2011
Nitrite 1041 Inorganic Chemical 2 of 83 results Aug 17, 2006 Aug 17, 2006
Cadmium 1015 Inorganic Chemical 2 of 39 results Mar 9, 2005 Mar 9, 2005
Xylenes, Total 2955 Organic Chemical 1 of 53 results Oct 21, 2013 Oct 21, 2013
Calcium 1016 Inorganic Chemical 1 of 1 result Mar 26, 2008 Mar 26, 2008
Chloride 1017 Inorganic Chemical 1 of 1 result Mar 26, 2008 Mar 26, 2008
Magnesium 1031 Inorganic Chemical 1 of 1 result Mar 26, 2008 Mar 26, 2008
Manganese 1032 Inorganic Chemical 1 of 1 result Mar 26, 2008 Mar 26, 2008
Potassium 1042 Inorganic Chemical 1 of 1 result Mar 26, 2008 Mar 26, 2008
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Carbon Dioxide 1901 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Color 1905 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
PH 1925 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Alkalinity, Total 1927 Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Calculated Sodium NACA Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
PH, Field Result PHFD Water Quality 1 of 1 result Mar 26, 2008 Mar 26, 2008
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 83 results Aug 17, 2006 Aug 17, 2006
Nitrate 1040 Inorganic Chemical 1 of 83 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 1–10 of 686 samples, newest first — collected March 17, 2025 to July 20, 2026. The summary above covers all 686.

46 results from the 10 samples listed here: 16 detected, 30 not detected. Across the whole record it is 981 of 3,062. 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 4 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 City of Pass Christian, every result from 1 to 10 of 686 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 20, 2026
Sampling point
TF105 Treatment Facility TF105
Sample type
Routine
Lab sample
35052319001
Laboratory
Pace Analytical Services, LLC
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Dichloromethane 2964 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Benzene 2990 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Toluene 2991 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2026, sampling point TF105 Styrene 2996 EPA method 524.2 Jan 1, 2024 – Dec 31, 2026
Collected
May 18, 2026 09:10
Sampling point
SM2 SM2
Sample type
Routine
Lab sample
810-192636-2
Laboratory
Eurofins Eaton Analytical South Bend in
5.5 ug/l , sample collected May 18, 2026 09:10, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2026 09:10, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
0.78 ug/l , sample collected May 18, 2026 09:10, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected May 18, 2026 09:10, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.28 ug/l , sample collected May 18, 2026 09:10, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Collected
May 18, 2026 10:00
Sampling point
SM1 SM1
Sample type
Routine
Lab sample
810-192636-1
Laboratory
Eurofins Eaton Analytical South Bend in
16 ug/l , sample collected May 18, 2026 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 May 18, 2026 10:00, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
4.3 ug/l , sample collected May 18, 2026 10:00, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.98 ug/l , sample collected May 18, 2026 10:00, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
21.28 ug/l , sample collected May 18, 2026 10:00, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2026 – Dec 31, 2026
Collected
Nov 13, 2025 09:30
Sampling point
SM3 Location withheld
Sample type
Routine
Lab sample
810-172241-1
Laboratory
Eurofins Eaton Analytical South Bend in
5.6 ug/l , sample collected Nov 13, 2025 09:30, sampling point SM3 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 13, 2025 09:30, sampling point SM3 Bromoform 2942 EPA method 524.2 Not recorded
0.89 ug/l , sample collected Nov 13, 2025 09:30, sampling point SM3 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 13, 2025 09:30, sampling point SM3 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.49 ug/l , sample collected Nov 13, 2025 09:30, sampling point SM3 TTHM 2950 EPA method 524.2 Not recorded
Collected
Nov 12, 2025 09:10
Sampling point
SM4 Location withheld
Sample type
Routine
Lab sample
810-172241-2
Laboratory
Eurofins Eaton Analytical South Bend in
1.8 ug/l , sample collected Nov 12, 2025 09:10, sampling point SM4 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Nov 12, 2025 09:10, sampling point SM4 Bromoform 2942 EPA method 524.2 Not recorded
0.98 ug/l , sample collected Nov 12, 2025 09:10, sampling point SM4 Bromodichloromethane 2943 EPA method 524.2 Not recorded
0.64 ug/l , sample collected Nov 12, 2025 09:10, sampling point SM4 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.42 ug/l , sample collected Nov 12, 2025 09:10, sampling point SM4 TTHM 2950 EPA method 524.2 Not recorded
Collected
Nov 4, 2025 07:20
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
CN-251105-002
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Nov 4, 2025 07:20, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 18, 2025 07:50
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
CN-250819-037
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 18, 2025 07:50, sampling point TF103 Cyanide 1024 EPA method QC10204001X Jan 1, 2025 – Dec 31, 2027
Collected
Aug 18, 2025 07:40
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
CN-250819-038
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 18, 2025 07:40, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Mar 17, 2025 08:50
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
HA-250318-006
Laboratory
MSDH Lab
9.6 ug/l , sample collected Mar 17, 2025 08:50, sampling point SMT Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
Mar 17, 2025 09:20
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
HA-250318-005
Laboratory
MSDH Lab
21.4 ug/l , sample collected Mar 17, 2025 09:20, sampling point SMH Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded

Routine (10).