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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

MS0010007 , Oakland Water Works

25 of the 56 analytes this system has been tested for have been detected at least once, across 285 samples on record.

The other 31 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 285 samples on record, detections range from August 24, 1993 to July 27, 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 Oakland Water Works, 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 147 of 155 results Aug 24, 1993 Sep 11, 2025
Lead 1030 Inorganic Chemical 130 of 155 results Aug 24, 1993 Aug 13, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 29 of 29 results May 5, 2004 Jan 22, 2019
Nitrate 1040 Inorganic Chemical 29 of 29 results May 5, 2004 Jan 22, 2019
TTHM 2950 Organic Chemical 20 of 24 results Jun 25, 2007 Jul 23, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 17 of 22 results Jun 25, 2007 Jul 27, 2026
Barium 1010 Inorganic Chemical 15 of 15 results Jan 15, 2002 Apr 6, 2020
Fluoride 1025 Inorganic Chemical 15 of 15 results Jan 15, 2002 Apr 6, 2020
Chromium 1020 Inorganic Chemical 14 of 15 results Jan 15, 2002 Sep 10, 2018
Nickel 1036 Inorganic Chemical 14 of 15 results Jan 15, 2002 Sep 10, 2018
Chloroform 2941 Organic Chemical 12 of 15 results Jun 25, 2007 Jul 23, 2025
Bromodichloromethane 2943 Organic Chemical 11 of 15 results Jul 14, 2008 Jul 23, 2025
Dibromochloromethane 2944 Organic Chemical 11 of 15 results Jul 14, 2008 Jul 23, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 11 of 11 results Dec 7, 2011 Mar 15, 2016
Combined Uranium 4006 Radionuclide 9 of 10 results Feb 6, 2012 Jul 9, 2018
Dichloroacetic Acid 2451 Organic Chemical 8 of 12 results Jul 14, 2008 Jul 27, 2026
Trichloroacetic Acid 2452 Organic Chemical 8 of 12 results Jul 14, 2008 Jul 27, 2026
Selenium 1045 Inorganic Chemical 7 of 15 results Jan 12, 2004 Mar 10, 2008
Monochloroacetic Acid 2450 Organic Chemical 3 of 12 results Sep 14, 2011 Jul 13, 2020
Arsenic 1005 Inorganic Chemical 3 of 15 results Dec 12, 2005 May 5, 2014
Cadmium 1015 Inorganic Chemical 3 of 15 results Jan 12, 2004 May 5, 2014
Uranium-238 4009 Radionuclide 3 of 3 results Dec 12, 2005 Jan 18, 2006
Sulfate 1055 Inorganic Chemical 2 of 2 results Jan 15, 2002 Jan 12, 2004
Monobromoacetic Acid 2453 Organic Chemical 1 of 12 results Jul 13, 2020 Jul 13, 2020
Cyanide 1024 Inorganic Chemical 1 of 14 results Jan 18, 2006 Jan 18, 2006

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 11–20 of 21 samples, newest first — collected March 5, 2025 to August 6, 2025. The summary above covers all 21.

39 results from the 10 samples listed here: 29 detected, 10 not detected. Across the whole record it is 523 of 969. 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 3 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 Oakland Water Works, every result from 11 to 20 of 21 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 6, 2025 07:36
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-250813-030
Laboratory
MSDH Lab
0.0217 mg/l , sample collected Aug 6, 2025 07:36, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
2.2 ug/l , sample collected Aug 6, 2025 07:36, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jul 23, 2025 08:42
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-157126-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:42, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
7.9 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
9.4 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:42, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:42, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
17.3 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
31 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:42, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
10 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
3.8 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
44.8 ug/l , sample collected Jul 23, 2025 08:42, sampling point SM1 TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Jul 23, 2025 08:18
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-157126-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:18, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
4.3 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
6.7 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:18, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:18, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
11 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jul 1, 2025 – Sep 30, 2025
13 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 23, 2025 08:18, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
6.8 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
2.8 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
22.6 ug/l , sample collected Jul 23, 2025 08:18, sampling point SM2 TTHM 2950 EPA method 524.2 Jul 1, 2025 – Sep 30, 2025
Collected
Apr 23, 2025 10:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-145952-2
Laboratory
Eurofins Eaton Analytical South Bend in
27 ug/l , sample collected Apr 23, 2025 10:45, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 23, 2025 10:45, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
9.9 ug/l , sample collected Apr 23, 2025 10:45, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
3.6 ug/l , sample collected Apr 23, 2025 10:45, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
40.5 ug/l , sample collected Apr 23, 2025 10:45, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 23, 2025 10:23
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-145952-1
Laboratory
Eurofins Eaton Analytical South Bend in
11 ug/l , sample collected Apr 23, 2025 10:23, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 23, 2025 10:23, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
5.8 ug/l , sample collected Apr 23, 2025 10:23, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
2.3 ug/l , sample collected Apr 23, 2025 10:23, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
19.1 ug/l , sample collected Apr 23, 2025 10:23, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 7, 2025 09:05
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
HA-250408-008
Laboratory
MSDH Lab
21.6 ug/l , sample collected Apr 7, 2025 09:05, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 7, 2025 09:22
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
HA-250408-007
Laboratory
MSDH Lab
26.8 ug/l , sample collected Apr 7, 2025 09:22, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 7, 2025 09:05
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
TH-250408-008
Laboratory
MSDH Lab
18.9 ug/l , sample collected Apr 7, 2025 09:05, sampling point SM2 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Apr 7, 2025 09:22
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
TH-250408-007
Laboratory
MSDH Lab
25 ug/l , sample collected Apr 7, 2025 09:22, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2025 – Jun 30, 2025
Collected
Mar 5, 2025 09:55
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-250306-004
Laboratory
MSDH Lab
23.7 ug/l , sample collected Mar 5, 2025 09:55, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2025 – Dec 31, 2025

Routine (10).