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 31–40 of 149 samples, newest first — collected June 26, 2017 to August 8, 2018. The summary above covers all 149.
26 results from the 10 samples listed here: 17 detected, 9 not detected. Across the whole record it is 188 of 580. 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 0.0005 mg/l Minimum Reporting Level , sample collected Aug 8, 2018 14:24, sampling point TF101 | Combined Uranium 4006 EPA method 200.8 | Jan 1, 2012 – Dec 31, 2020 |
|
||
| 21.1 ug/l , sample collected Jul 30, 2018 01:56, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 30, 2018 01:56, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 6.75 ug/l , sample collected Jul 30, 2018 01:56, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 1.61 ug/l , sample collected Jul 30, 2018 01:56, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 29.5 ug/l , sample collected Jul 30, 2018 01:56, sampling point MRT000 | TTHM 2950 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 30, 2018 02:04, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.008 mg/l , sample collected Jul 30, 2018 02:04, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.012 mg/l , sample collected Jul 30, 2018 02:04, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| 0.004 mg/l , sample collected Jul 30, 2018 02:04, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 0.001 mg/l , sample collected Jul 30, 2018 02:04, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.025 mg/l , sample collected Jul 30, 2018 02:04, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2017 – Dec 31, 2019 |
|
||
| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Jun 12, 2018 03:15, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2017 – Dec 31, 2019 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 6, 2018 14:31, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 6, 2018 14:31, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 6, 2018 14:31, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2018 – Dec 31, 2018 |
|
||
| 0.0448 mg/l , sample collected Jun 28, 2017 03:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0009 mg/l , sample collected Jun 28, 2017 03:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0979 mg/l , sample collected Jun 27, 2017 09:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0024 mg/l , sample collected Jun 27, 2017 09:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0136 mg/l , sample collected Jun 27, 2017, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 27, 2017, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.2243 mg/l , sample collected Jun 27, 2017 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0007 mg/l , sample collected Jun 27, 2017 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1085 mg/l , sample collected Jun 26, 2017 06:36, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 26, 2017 06:36, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
-
- Collected
- Aug 8, 2018 14:24
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 180809-020RU
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2012 – Dec 31, 2020
-
Combined Uranium 4006 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 30, 2018 01:56
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 180731-006TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 21.1 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
- 6.75 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 1.61 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950
- Result
- 29.5 ug/l
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
- Collected
- Jul 30, 2018 02:04
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 180731-006HA
- 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
- 0.008 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.012 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- 0.004 mg/l
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 0.001 mg/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.025 mg/l
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
- Collected
- Jun 12, 2018 03:15
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 180613-001CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2019
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Feb 6, 2018 14:31
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 180207-004NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2018 – Dec 31, 2018
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jun 28, 2017 03:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170630-001PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0448 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0009 mg/l
-
- Collected
- Jun 27, 2017 09:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170630-004PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0979 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0024 mg/l
-
- Collected
- Jun 27, 2017
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170630-003PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0136 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 27, 2017 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170630-002PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2243 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Jun 26, 2017 06:36
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170630-005PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1085 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).