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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

MS0240005 , City of Long Beach

42 of the 74 analytes this system has been tested for have been detected at least once, across 1,032 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 1,032 samples on record, detections range from December 31, 1992 to July 29, 2026. 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 City of Long Beach, 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 328 of 413 results Dec 31, 1992 Jun 19, 2024
Lead 1030 Inorganic Chemical 246 of 413 results Dec 31, 1992 Jun 19, 2024
Fluoride 1025 Inorganic Chemical 98 of 98 results Sep 22, 2003 Jul 29, 2026
Barium 1010 Inorganic Chemical 90 of 90 results Sep 22, 2003 Dec 3, 2025
Chromium 1020 Inorganic Chemical 57 of 90 results Feb 2, 2004 Dec 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 33 of 55 results Mar 23, 2006 Jun 24, 2026
TTHM 2950 Organic Chemical 33 of 53 results Mar 8, 2004 Jun 24, 2026
Sodium 1052 Inorganic Chemical 29 of 29 results Mar 22, 2010 Jul 29, 2026
Nickel 1036 Inorganic Chemical 26 of 90 results Mar 7, 2005 Apr 26, 2022
Sulfate 1055 Inorganic Chemical 20 of 20 results Sep 22, 2003 Mar 22, 2010
Dichloroacetic Acid 2451 Organic Chemical 19 of 34 results Jun 24, 2008 Jun 24, 2026
Chloroform 2941 Organic Chemical 19 of 35 results Jul 24, 2006 Jun 24, 2026
Selenium 1045 Inorganic Chemical 17 of 90 results Mar 7, 2005 Feb 6, 2006
Cadmium 1015 Inorganic Chemical 13 of 90 results Mar 7, 2005 Feb 6, 2006
Bromodichloromethane 2943 Organic Chemical 10 of 35 results Jun 29, 2009 Jun 24, 2026
Trichloroacetic Acid 2452 Organic Chemical 7 of 34 results Jul 20, 2011 Jun 24, 2026
Dibromochloromethane 2944 Organic Chemical 6 of 35 results Aug 10, 2010 Jun 24, 2026
Nitrate 1040 Inorganic Chemical 4 of 186 results May 12, 2004 Apr 27, 2021
Cyanide 1024 Inorganic Chemical 3 of 85 results Sep 28, 2011 Aug 20, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 3 of 186 results May 12, 2004 Apr 27, 2021
Radium-226 4020 Radionuclide 3 of 27 results Mar 28, 2018 Mar 28, 2018
Monochloroacetic Acid 2450 Organic Chemical 3 of 34 results Oct 14, 2013 Jul 31, 2017
Gross Alpha, Incl. Radon & U 4002 Radionuclide 2 of 7 results Mar 28, 2018 Mar 28, 2018
Nitrite 1041 Inorganic Chemical 2 of 186 results Aug 14, 2006 May 19, 2008
Dibromoacetic Acid 2454 Organic Chemical 1 of 34 results Jun 3, 2019 Jun 3, 2019
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 27 results Mar 28, 2018 Mar 28, 2018
Radium-228 4030 Radionuclide 1 of 27 results Mar 28, 2018 Mar 28, 2018
Arsenic 1005 Inorganic Chemical 1 of 90 results Apr 7, 2014 Apr 7, 2014
Gross Alpha Particle Activity 4109 Radionuclide 1 of 22 results Sep 10, 2012 Sep 10, 2012
Calcium 1016 Inorganic Chemical 1 of 1 result Mar 22, 2010 Mar 22, 2010
Chloride 1017 Inorganic Chemical 1 of 1 result Mar 22, 2010 Mar 22, 2010
Magnesium 1031 Inorganic Chemical 1 of 1 result Mar 22, 2010 Mar 22, 2010
Manganese 1032 Inorganic Chemical 1 of 1 result Mar 22, 2010 Mar 22, 2010
Potassium 1042 Inorganic Chemical 1 of 1 result Mar 22, 2010 Mar 22, 2010
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
Carbon Dioxide 1901 Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
Color 1905 Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
Alkalinity, Total 1927 Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
Calculated Sodium NACA Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010
PH, Field Result PHFD Water Quality 1 of 1 result Mar 22, 2010 Mar 22, 2010

Showing samples collected between September 26, 2024 and September 26, 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 11–20 of 33 samples, newest first — collected February 10, 2025 to August 20, 2025. The summary above covers all 33.

20 results from the 10 samples listed here: 7 detected, 13 not detected. Across the whole record it is 1,089 of 4,909. 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 City of Long Beach, every result from 11 to 20 of 33 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
Aug 20, 2025 09:35
Sampling point
TF112 Treatment Plant T112
Sample type
Routine
Lab sample
CN-250821-006
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 09:35, sampling point TF112 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 09:42
Sampling point
TF110 Treatment Plant T110
Sample type
Routine
Lab sample
CN-250821-005
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 09:42, sampling point TF110 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 09:25
Sampling point
TF106 Treatment Plant T106
Sample type
Routine
Lab sample
CN-250821-003
Laboratory
MSDH Lab
0.0171 mg/l , sample collected Aug 20, 2025 09:25, sampling point TF106 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 09:10
Sampling point
TF105 Treatment Plant T105
Sample type
Routine
Lab sample
CN-250821-002
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 09:10, sampling point TF105 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Aug 20, 2025 08:50
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
CN-250821-001
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 20, 2025 08:50, sampling point TF104 Cyanide 1024 EPA method QC10204001X Jan 1, 2023 – Dec 31, 2025
Collected
Mar 17, 2025 13:34
Sampling point
SM3 Location withheld
Sample type
Routine
Lab sample
HA-250318-004
Laboratory
MSDH Lab
12.6 ug/l , sample collected Mar 17, 2025 13:34, sampling point SM3 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 17, 2025 13:45
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-250318-003
Laboratory
MSDH Lab
11.5 ug/l , sample collected Mar 17, 2025 13:45, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 17, 2025 13:25
Sampling point
SM3 Location withheld
Sample type
Routine
Lab sample
TH-250318-004
Laboratory
MSDH Lab
2.61 ug/l , sample collected Mar 17, 2025 13:25, sampling point SM3 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Mar 17, 2025 13:42
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-250318-003
Laboratory
MSDH Lab
7.22 ug/l , sample collected Mar 17, 2025 13:42, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2025 – Dec 31, 2025
Collected
Feb 10, 2025 13:46
Sampling point
TF113 Treatment Plant T113
Sample type
Routine
Lab sample
IN-250211-016
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 13:46, sampling point TF113 Arsenic 1005 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.0087 mg/l , sample collected Feb 10, 2025 13:46, sampling point TF113 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 10, 2025 13:46, sampling point TF113 Cadmium 1015 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 13:46, sampling point TF113 Chromium 1020 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
0.176 mg/l , sample collected Feb 10, 2025 13:46, sampling point TF113 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 10, 2025 13:46, sampling point TF113 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 10, 2025 13:46, sampling point TF113 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 10, 2025 13:46, sampling point TF113 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 10, 2025 13:46, sampling point TF113 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 10, 2025 13:46, sampling point TF113 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 10, 2025 13:46, sampling point TF113 Thallium, Total 1085 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).