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
MS0430002 , City of Brookhaven
47 of the 75 analytes this system has been tested for have been detected at least once, across 681 samples on record.
The other 28 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 681 samples on record, detections range from June 28, 2002 to June 16, 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.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 174 of 174 results | Jun 15, 2004 | Aug 22, 2024 |
| Lead 1030 | Inorganic Chemical | 108 of 174 results | Jun 15, 2004 | Aug 21, 2024 |
| TTHM 2950 | Organic Chemical | 52 of 61 results | Mar 8, 2004 | Apr 23, 2025 |
| Tetrachloroethylene 2987 | Organic Chemical | 49 of 137 results | Jun 28, 2002 | Feb 14, 2022 |
| Barium 1010 | Inorganic Chemical | 40 of 41 results | Jul 16, 2002 | Jun 16, 2026 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 38 of 58 results | Sep 12, 2005 | Apr 23, 2025 |
| Fluoride 1025 | Inorganic Chemical | 37 of 42 results | Jul 16, 2002 | Jun 16, 2026 |
| Nitrate 1040 | Inorganic Chemical | 36 of 111 results | May 24, 2004 | Feb 25, 2026 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 35 of 111 results | May 24, 2004 | Feb 25, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 33 of 43 results | Jul 31, 2006 | Oct 7, 2020 |
| Bromodichloromethane 2943 | Organic Chemical | 28 of 43 results | Jul 31, 2006 | Oct 7, 2020 |
| Bromoform 2942 | Organic Chemical | 26 of 43 results | Jul 31, 2006 | Aug 20, 2019 |
| Chloroform 2941 | Organic Chemical | 23 of 43 results | Jul 31, 2006 | Oct 7, 2020 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 15 of 20 results | Dec 14, 2011 | Oct 3, 2012 |
| Dichloroacetic Acid 2451 | Organic Chemical | 12 of 37 results | Sep 8, 2009 | Oct 7, 2020 |
| Dibromoacetic Acid 2454 | Organic Chemical | 12 of 37 results | Jun 30, 2008 | Aug 20, 2019 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 12 of 30 results | Sep 21, 2009 | Oct 3, 2012 |
| Radium-226 4020 | Radionuclide | 12 of 30 results | Sep 21, 2009 | Oct 3, 2012 |
| Sodium 1052 | Inorganic Chemical | 11 of 11 results | Sep 2, 2010 | Jun 16, 2026 |
| Chromium 1020 | Inorganic Chemical | 11 of 41 results | Oct 6, 2003 | Apr 23, 2025 |
| Nickel 1036 | Inorganic Chemical | 11 of 39 results | Jul 16, 2002 | Apr 23, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 10 of 37 results | Nov 2, 2009 | Jun 12, 2018 |
| Sulfate 1055 | Inorganic Chemical | 9 of 9 results | Jul 16, 2002 | Sep 2, 2010 |
| Trichloroacetic Acid 2452 | Organic Chemical | 5 of 37 results | Aug 9, 2010 | Oct 7, 2020 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 5 of 10 results | Sep 21, 2009 | Sep 17, 2012 |
| Radium-228 4030 | Radionuclide | 5 of 30 results | Sep 21, 2009 | Mar 2, 2010 |
| Gross Beta Particle Activity 4100 | Radionuclide | 5 of 5 results | Sep 21, 2009 | Mar 2, 2010 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 4 of 8 results | Sep 21, 2009 | Mar 2, 2010 |
| Arsenic 1005 | Inorganic Chemical | 3 of 41 results | Mar 1, 2004 | Apr 23, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 2 of 137 results | Aug 26, 2013 | Jun 8, 2021 |
| Nitrite 1041 | Inorganic Chemical | 1 of 111 results | Feb 28, 2022 | Feb 28, 2022 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 37 results | Oct 7, 2020 | Oct 7, 2020 |
| Dichloromethane 2964 | Organic Chemical | 1 of 137 results | Apr 29, 2013 | Apr 29, 2013 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Manganese 1032 | Inorganic Chemical | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Potassium 1042 | Inorganic Chemical | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Color 1905 | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Iron, Field Result FEFD | Inorganic Chemical | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | Sep 2, 2010 | Sep 2, 2010 |
| Cyanide 1024 | Inorganic Chemical | 1 of 43 results | Mar 1, 2004 | Mar 1, 2004 |
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.
Choose a date range
The most recent samples, result by result
The table below lists 21–24 of 24 samples, newest first — collected October 23, 2024 to February 10, 2025. The summary above covers all 24.
4 results from the 4 samples listed here: 3 detected, 1 not detected. 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 |
|---|---|---|
|
||
| 64 mg/l , sample collected Feb 10, 2025 09:50, sampling point TF108 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 63.9 mg/l , sample collected Feb 10, 2025 14:50, sampling point TF107 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 18.7 mg/l , sample collected Feb 10, 2025 10:45, sampling point TF080 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Oct 23, 2024 10:25, sampling point TF109 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2022 – Dec 31, 2024 |
-
- Collected
- Feb 10, 2025 09:50
- Sampling point
- TF108 Treatment Plant T108
- Sample type
- Routine
- Lab sample
- NA-250211-034
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 64 mg/l
-
- Collected
- Feb 10, 2025 14:50
- Sampling point
- TF107 Treatment Plant T107
- Sample type
- Routine
- Lab sample
- NA-250211-032
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 63.9 mg/l
-
- Collected
- Feb 10, 2025 10:45
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NA-250211-035
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 18.7 mg/l
-
- Collected
- Oct 23, 2024 10:25
- Sampling point
- TF109
- Sample type
- Routine
- Lab sample
- CN-241024-004
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
Routine (4).