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.
| 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 131–140 of 305 samples, newest first — collected September 28, 2011 to March 5, 2012. The summary above covers all 305.
35 results from the 10 samples listed here: 19 detected, 16 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:00, sampling point TF103 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:00, sampling point TF103 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:00, sampling point TF103 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:00, sampling point TF102 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:00, sampling point TF102 | Nitrate 1040 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:00, sampling point TF102 | Nitrite 1041 EPA method 353.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.005 mg/l , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.003 mg/l , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.008 mg/l , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| 3.43 ug/l , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.83 ug/l , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 5, 2012 02:30, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 5.26 ug/l , sample collected Mar 5, 2012 02:30, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2012 – Dec 31, 2012 |
|
||
| 4.08 ug/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 3.22 ug/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 2.16 ug/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 9.46 ug/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Oct 1, 2011 – Dec 31, 2011 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.004 mg/l , sample collected Nov 17, 2011 02:00, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Oct 1, 2011 – Dec 31, 2011 |
|
||
| 0.022 mg/l , sample collected Sep 29, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.001 mg/l , sample collected Sep 29, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.0115 mg/l , sample collected Sep 29, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0006 mg/l , sample collected Sep 29, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.17 mg/l , sample collected Sep 29, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0006 mg/l , sample collected Sep 29, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| Not detected below 15 ug/l Minimum Reporting Level , sample collected Sep 28, 2011 01:00, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2011 – Dec 31, 2013 |
-
- Collected
- Mar 5, 2012 02:00
- Sampling point
- TF103 Treatment Plant T103
- Sample type
- Routine
- Lab sample
- 120306-083NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Mar 5, 2012 02:00
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 120306-082NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Mar 5, 2012 02:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 120306-001HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.005 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.003 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.008 mg/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
- Collected
- Mar 5, 2012 02:30
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 120306-001TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 3.43 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 1.83 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 5.26 ug/l
- Monitoring period
- Jan 1, 2012 – Dec 31, 2012
-
- Collected
- Nov 17, 2011 02:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 111118-004TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 4.08 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 3.22 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 2.16 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 9.46 ug/l
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
- Collected
- Nov 17, 2011 02:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 111118-004HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.002 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.002 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.004 mg/l
- Monitoring period
- Oct 1, 2011 – Dec 31, 2011
-
- Collected
- Sep 29, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110930-076PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.022 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.001 mg/l
-
- Collected
- Sep 29, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110930-075PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0115 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Sep 29, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110930-073PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.17 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Sep 28, 2011 01:00
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 110929-008CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2011 – Dec 31, 2013
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 15 ug/l Minimum Reporting Level
Routine (10).