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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

MS0300113 , Ocean Beach

25 of the 57 analytes this system has been tested for have been detected at least once, across 363 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 363 samples on record, detections range from September 22, 2003 to December 10, 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 Ocean 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
TTHM 2950 Organic Chemical 61 of 61 results Sep 8, 2004 Dec 10, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 60 of 60 results Sep 8, 2004 Dec 10, 2025
Copper, Free 1022 Inorganic Chemical 59 of 59 results Aug 12, 2008 Jul 12, 2023
Chloroform 2941 Organic Chemical 30 of 30 results Sep 20, 2006 Dec 10, 2025
Bromodichloromethane 2943 Organic Chemical 29 of 30 results Sep 20, 2006 Dec 10, 2025
Barium 1010 Inorganic Chemical 27 of 27 results Sep 22, 2003 Feb 24, 2025
Fluoride 1025 Inorganic Chemical 27 of 27 results Sep 22, 2003 Feb 24, 2025
Dichloroacetic Acid 2451 Organic Chemical 26 of 26 results Oct 11, 2007 Dec 10, 2025
Trichloroacetic Acid 2452 Organic Chemical 24 of 26 results Oct 11, 2007 Dec 10, 2025
Dibromochloromethane 2944 Organic Chemical 24 of 30 results Sep 20, 2006 Dec 10, 2025
Lead 1030 Inorganic Chemical 22 of 59 results Aug 13, 2008 Sep 10, 2020
Chromium 1020 Inorganic Chemical 19 of 27 results Sep 29, 2003 May 18, 2022
Gross Alpha, Incl. Radon & U 4002 Radionuclide 12 of 12 results Dec 7, 2011 Dec 15, 2015
Sulfate 1055 Inorganic Chemical 6 of 6 results Sep 22, 2003 Feb 23, 2004
Monochloroacetic Acid 2450 Organic Chemical 5 of 26 results Jan 31, 2008 Dec 7, 2009
Nickel 1036 Inorganic Chemical 4 of 27 results Jan 12, 2009 May 9, 2017
Sodium 1052 Inorganic Chemical 3 of 3 results Mar 8, 2021 Feb 14, 2024
Selenium 1045 Inorganic Chemical 3 of 27 results Mar 16, 2005 Mar 16, 2005
Nitrate-Nitrite 1038 Inorganic Chemical 2 of 54 results Jun 9, 2008 Feb 14, 2024
Nitrate 1040 Inorganic Chemical 2 of 54 results Jun 9, 2008 Feb 14, 2024
Carbon Tetrachloride 2982 Organic Chemical 2 of 45 results Mar 8, 2017 Mar 8, 2021
Cadmium 1015 Inorganic Chemical 2 of 27 results Mar 16, 2005 Mar 16, 2005
Arsenic 1005 Inorganic Chemical 1 of 27 results Feb 14, 2024 Feb 14, 2024
Combined Radium (-226 & -228) 4010 Radionuclide 1 of 12 results Dec 15, 2015 Dec 15, 2015
Radium-226 4020 Radionuclide 1 of 12 results Dec 15, 2015 Dec 15, 2015

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 101–110 of 363 samples, newest first — collected February 18, 2020 to September 10, 2020. The summary above covers all 363.

59 results from the 10 samples listed here: 12 detected, 47 not detected. Across the whole record it is 452 of 1,994. 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 Ocean Beach, every result from 101 to 110 of 363 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
Sep 10, 2020 04:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200911-127PB
Laboratory
MSDH Lab
0.0926 mg/l , sample collected Sep 10, 2020 04:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2020 04:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Sep 10, 2020 09:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200911-126PB
Laboratory
MSDH Lab
0.132 mg/l , sample collected Sep 10, 2020 09:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2020 09:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Sep 10, 2020 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200911-124PB
Laboratory
MSDH Lab
0.0555 mg/l , sample collected Sep 10, 2020 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2020 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Sep 9, 2020 04:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200911-129PB
Laboratory
MSDH Lab
0.1011 mg/l , sample collected Sep 9, 2020 04:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 9, 2020 04:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Sep 9, 2020
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200911-125PB
Laboratory
MSDH Lab
0.0076 mg/l , sample collected Sep 9, 2020, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0007 mg/l , sample collected Sep 9, 2020, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Apr 22, 2020 15:30
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
200423-023IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0037 mg/l , sample collected Apr 22, 2020 15:30, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0009 mg/l , sample collected Apr 22, 2020 15:30, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.43 mg/l , sample collected Apr 22, 2020 15:30, sampling point TF104 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 22, 2020 15:30, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Mar 24, 2020 09:51
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
200325-013IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0067 mg/l , sample collected Mar 24, 2020 09:51, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0055 mg/l , sample collected Mar 24, 2020 09:51, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.66 mg/l , sample collected Mar 24, 2020 09:51, sampling point TF104 Fluoride 1025 EPA method QC 10-109-12-2-A Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 24, 2020 09:51, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Feb 26, 2020 13:45
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
200227-006VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Dichloromethane 2964 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Benzene 2990 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Toluene 2991 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 26, 2020 13:45, sampling point TF104 Styrene 2996 EPA method 524.2 Jan 1, 2020 – Mar 31, 2020
Collected
Feb 18, 2020 13:00
Sampling point
TF104 Treatment Facility TF104
Sample type
Routine
Lab sample
200219-024NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 18, 2020 13:00, sampling point TF104 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 18, 2020 13:00, sampling point TF104 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 18, 2020 13:00, sampling point TF104 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Feb 18, 2020 13:30
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
200219-023NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 18, 2020 13:30, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 18, 2020 13:30, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 18, 2020 13:30, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020

Routine (10).