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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

MS0180014 , Brooklyn Water Association

20 of the 58 analytes this system has been tested for have been detected at least once, across 305 samples on record.

The other 38 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 305 samples on record, detections range from November 23, 1993 to February 3, 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 Brooklyn 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
Lead 1030 Inorganic Chemical 106 of 129 results Nov 23, 1993 Jul 11, 2023
Copper, Free 1022 Inorganic Chemical 92 of 129 results Nov 23, 1993 Jul 11, 2023
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 24 of 25 results Aug 2, 2007 Apr 26, 2023
TTHM 2950 Organic Chemical 23 of 24 results May 19, 2004 Apr 26, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Sep 29, 2003 Feb 3, 2025
Fluoride 1025 Inorganic Chemical 19 of 20 results Sep 29, 2003 Feb 3, 2025
Chloroform 2941 Organic Chemical 16 of 17 results Aug 2, 2007 Nov 7, 2017
Bromodichloromethane 2943 Organic Chemical 15 of 17 results Aug 2, 2007 Nov 7, 2017
Dichloroacetic Acid 2451 Organic Chemical 12 of 17 results Feb 26, 2009 Dec 2, 2020
Dibromochloromethane 2944 Organic Chemical 12 of 17 results Aug 2, 2007 Nov 17, 2011
Chromium 1020 Inorganic Chemical 11 of 20 results Sep 29, 2003 Feb 3, 2025
Trichloroacetic Acid 2452 Organic Chemical 10 of 17 results Feb 26, 2009 Dec 2, 2020
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 7, 2012 Oct 24, 2012
Sodium 1052 Inorganic Chemical 6 of 6 results Oct 6, 2019 Jan 29, 2024
Nickel 1036 Inorganic Chemical 4 of 20 results Apr 9, 2008 Feb 3, 2025
Sulfate 1055 Inorganic Chemical 4 of 4 results Sep 29, 2003 Feb 4, 2004
Cadmium 1015 Inorganic Chemical 2 of 20 results Mar 9, 2005 Mar 9, 2005
Selenium 1045 Inorganic Chemical 2 of 20 results Mar 9, 2005 Mar 9, 2005
Monochloroacetic Acid 2450 Organic Chemical 1 of 17 results Sep 30, 2009 Sep 30, 2009
Dibromoacetic Acid 2454 Organic Chemical 1 of 17 results Sep 30, 2009 Sep 30, 2009

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 81–90 of 305 samples, newest first — collected November 18, 2015 to August 8, 2017. The summary above covers all 305.

25 results from the 10 samples listed here: 10 detected, 15 not detected. Across the whole record it is 390 of 1,191. 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 Brooklyn Water Association, every result from 81 to 90 of 305 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 8, 2017 07:50
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170811-101PB
Laboratory
MSDH Lab
0.2078 mg/l , sample collected Aug 8, 2017 07:50, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0027 mg/l , sample collected Aug 8, 2017 07:50, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 8, 2017 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170811-100PB
Laboratory
MSDH Lab
0.2777 mg/l , sample collected Aug 8, 2017 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Aug 8, 2017 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 7, 2017 12:08
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170811-107PB
Laboratory
MSDH Lab
0.0136 mg/l , sample collected Aug 7, 2017 12:08, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0009 mg/l , sample collected Aug 7, 2017 12:08, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 7, 2017 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170811-106PB
Laboratory
MSDH Lab
0.2121 mg/l , sample collected Aug 7, 2017 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0009 mg/l , sample collected Aug 7, 2017 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Aug 7, 2017 18:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
170811-099PB
Laboratory
MSDH Lab
0.5221 mg/l , sample collected Aug 7, 2017 18:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
0.0007 mg/l , sample collected Aug 7, 2017 18:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2015 – Dec 31, 2017
Collected
Feb 21, 2017 13:19
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
170222-043NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 13:19, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 13:19, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 13:19, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Feb 21, 2017 13:08
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
170222-042NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 13:08, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 13:08, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 21, 2017 13:08, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Dec 27, 2016 12:29
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
161228-010NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 27, 2016 12:29, sampling point TF103 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Dec 27, 2016 12:29, sampling point TF103 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Dec 27, 2016 12:29, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Dec 27, 2016 12:07
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
161228-002NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 27, 2016 12:07, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Dec 27, 2016 12:07, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Dec 27, 2016 12:07, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Nov 18, 2015 12:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
151119-015NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 18, 2015 12:10, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Nov 18, 2015 12:10, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Nov 18, 2015 12:10, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015

Routine (10).