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
MS0240027 , Knollwood
23 of the 59 analytes this system has been tested for have been detected at least once, across 149 samples on record.
The other 36 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 149 samples on record, detections range from August 17, 1993 to February 11, 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 |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 53 of 70 results | Aug 17, 1993 | Jun 30, 2023 |
| Lead 1030 | Inorganic Chemical | 43 of 70 results | Aug 17, 1993 | Jun 29, 2023 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Sep 15, 2003 | Feb 11, 2025 |
| Fluoride 1025 | Inorganic Chemical | 10 of 10 results | Sep 15, 2003 | Feb 11, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 10 of 10 results | May 24, 2004 | Feb 11, 2025 |
| TTHM 2950 | Organic Chemical | 10 of 10 results | May 24, 2004 | Feb 11, 2025 |
| Chromium 1020 | Inorganic Chemical | 6 of 10 results | Sep 15, 2003 | Apr 26, 2022 |
| Chloroform 2941 | Organic Chemical | 6 of 6 results | Sep 19, 2006 | Jul 30, 2018 |
| Bromodichloromethane 2943 | Organic Chemical | 6 of 6 results | Sep 19, 2006 | Jul 30, 2018 |
| Dibromochloromethane 2944 | Organic Chemical | 6 of 6 results | Sep 19, 2006 | Jul 30, 2018 |
| Dichloroacetic Acid 2451 | Organic Chemical | 4 of 4 results | Sep 18, 2008 | Jul 30, 2018 |
| Trichloroacetic Acid 2452 | Organic Chemical | 4 of 4 results | Sep 18, 2008 | Jul 30, 2018 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 16, 2019 | Feb 13, 2024 |
| Monobromoacetic Acid 2453 | Organic Chemical | 2 of 4 results | Jul 19, 2012 | Jul 30, 2018 |
| Dibromoacetic Acid 2454 | Organic Chemical | 2 of 4 results | Jul 19, 2012 | Jul 30, 2018 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 2 of 4 results | Jun 28, 2012 | Sep 18, 2012 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 2 of 2 results | Sep 26, 2011 | Nov 30, 2011 |
| Combined Uranium 4006 | Radionuclide | 2 of 3 results | Sep 26, 2011 | Nov 30, 2011 |
| Nickel 1036 | Inorganic Chemical | 2 of 10 results | Feb 6, 2006 | Apr 7, 2008 |
| Sulfate 1055 | Inorganic Chemical | 2 of 2 results | Sep 15, 2003 | Feb 2, 2004 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 4 results | Jul 19, 2012 | Jul 19, 2012 |
| Arsenic 1005 | Inorganic Chemical | 1 of 10 results | Apr 7, 2008 | Apr 7, 2008 |
| Selenium 1045 | Inorganic Chemical | 1 of 10 results | Feb 6, 2006 | Feb 6, 2006 |
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 141–149 of 149 samples, newest first — collected August 17, 1993 to August 18, 1993. The summary above covers all 149.
18 results from the 9 samples listed here: 10 detected, 8 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 |
|---|---|---|
|
||
| 0.166 mg/l , sample collected Aug 18, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.153 mg/l , sample collected Aug 18, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Aug 18, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.008 mg/l , sample collected Aug 18, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.079 mg/l , sample collected Aug 18, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 18, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.232 mg/l , sample collected Aug 17, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.004 mg/l , sample collected Aug 17, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.082 mg/l , sample collected Aug 17, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Aug 17, 1993, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.094 mg/l , sample collected Aug 17, 1993, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.005 mg/l , sample collected Aug 17, 1993, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- Aug 18, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930819-070L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.166 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 18, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930819-068L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.153 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 18, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930819-067L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- Aug 18, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930819-066L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.008 mg/l
-
- Collected
- Aug 18, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930819-065L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 18, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930819-064L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.079 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 17, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930818-113L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.232 mg/l
-
Lead 1030
- Result
- 0.004 mg/l
-
- Collected
- Aug 17, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930818-110L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.082 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Aug 17, 1993
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 930818-107L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.094 mg/l
-
Lead 1030
- Result
- 0.005 mg/l
Routine (9).