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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 91–100 of 305 samples, newest first — collected July 30, 2014 to November 18, 2015. The summary above covers all 305.

28 results from the 10 samples listed here: 18 detected, 10 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.

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 Brooklyn Water Association, every result from 91 to 100 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
Nov 18, 2015 12:12
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
151119-008NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Nov 18, 2015 12:12, sampling point TF103 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 12:12, sampling point TF103 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 12:12, sampling point TF103 Nitrite 1041 EPA method QC10107041C Jan 1, 2015 – Dec 31, 2015
Collected
Jul 22, 2015 12:00
Sampling point
SMH Location withheld
Sample type
Routine
Lab sample
150723-016HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 22, 2015 12:00, sampling point SMH Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Jul 22, 2015 12:00, sampling point SMH Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 22, 2015 12:00, sampling point SMH Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 22, 2015 12:00, sampling point SMH Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 22, 2015 12:00, sampling point SMH Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.002 mg/l , sample collected Jul 22, 2015 12:00, sampling point SMH Total Haloacetic Acids (Haa5) 2456 Jan 1, 2015 – Dec 31, 2015
Collected
Jul 22, 2015 12:20
Sampling point
SMT Location withheld
Sample type
Routine
Lab sample
150723-016TH
Laboratory
MSDH Lab
1.52 ug/l , sample collected Jul 22, 2015 12:20, sampling point SMT Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 22, 2015 12:20, sampling point SMT Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 22, 2015 12:20, sampling point SMT Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 22, 2015 12:20, sampling point SMT Dibromochloromethane 2944 EPA method 524.2 Not recorded
1.52 ug/l , sample collected Jul 22, 2015 12:20, sampling point SMT TTHM 2950 EPA method 524.2 Jan 1, 2015 – Dec 31, 2015
Collected
Jul 31, 2014 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140801-080PB
Laboratory
MSDH Lab
0.0229 mg/l , sample collected Jul 31, 2014 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0008 mg/l , sample collected Jul 31, 2014 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 31, 2014 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140801-069PB
Laboratory
MSDH Lab
0.1259 mg/l , sample collected Jul 31, 2014 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.005 mg/l , sample collected Jul 31, 2014 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 31, 2014 05:41
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140731-094PB
Laboratory
MSDH Lab
0.0928 mg/l , sample collected Jul 31, 2014 05:41, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0007 mg/l , sample collected Jul 31, 2014 05:41, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 30, 2014 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140731-096PB
Laboratory
MSDH Lab
0.0096 mg/l , sample collected Jul 30, 2014 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0025 mg/l , sample collected Jul 30, 2014 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 30, 2014 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140801-071PB
Laboratory
MSDH Lab
0.0221 mg/l , sample collected Jul 30, 2014 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.001 mg/l , sample collected Jul 30, 2014 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 30, 2014 06:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140801-070PB
Laboratory
MSDH Lab
0.017 mg/l , sample collected Jul 30, 2014 06:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0007 mg/l , sample collected Jul 30, 2014 06:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 30, 2014
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140731-098PB
Laboratory
MSDH Lab
0.0534 mg/l , sample collected Jul 30, 2014, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0042 mg/l , sample collected Jul 30, 2014, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).