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
MS0810012 , Tri-Lakes Water Assn-West
34 of the 73 analytes this system has been tested for have been detected at least once, across 160 samples on record.
The other 39 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 160 samples on record, detections range from November 5, 2003 to September 30, 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 | 66 of 66 results | Aug 21, 2007 | Aug 15, 2023 |
| TTHM 2950 | Organic Chemical | 17 of 20 results | Sep 13, 2004 | Sep 30, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 16 of 21 results | Sep 18, 2007 | Sep 30, 2025 |
| Chloroform 2941 | Organic Chemical | 15 of 15 results | Sep 18, 2007 | Sep 30, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 15 of 15 results | Sep 18, 2007 | Sep 30, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 15 of 15 results | Sep 18, 2007 | Sep 30, 2025 |
| Lead 1030 | Inorganic Chemical | 13 of 66 results | Aug 21, 2007 | Aug 15, 2023 |
| Dichloroacetic Acid 2451 | Organic Chemical | 11 of 15 results | Aug 2, 2010 | Sep 30, 2025 |
| Trichloroacetic Acid 2452 | Organic Chemical | 11 of 15 results | Sep 23, 2013 | Sep 30, 2025 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Nov 5, 2003 | Apr 8, 2025 |
| Fluoride 1025 | Inorganic Chemical | 5 of 11 results | Nov 5, 2003 | Apr 8, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 5 results | Dec 12, 2011 | Jul 19, 2012 |
| Chromium 1020 | Inorganic Chemical | 3 of 10 results | May 10, 2010 | Apr 8, 2025 |
| Nickel 1036 | Inorganic Chemical | 3 of 10 results | May 10, 2010 | Apr 8, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Dec 13, 2007 | Mar 21, 2023 |
| Bromoform 2942 | Organic Chemical | 2 of 15 results | Oct 1, 2024 | Oct 1, 2024 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 15 results | Nov 3, 2020 | Nov 3, 2020 |
| Dibromoacetic Acid 2454 | Organic Chemical | 1 of 15 results | Sep 23, 2013 | Sep 23, 2013 |
| Arsenic 1005 | Inorganic Chemical | 1 of 10 results | May 10, 2010 | May 10, 2010 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Magnesium 1031 | Inorganic Chemical | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Manganese 1032 | Inorganic Chemical | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Potassium 1042 | Inorganic Chemical | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| PH 1925 | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Iron, Field Result FEFD | Inorganic Chemical | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | Dec 13, 2007 | Dec 13, 2007 |
| Toluene 2991 | Organic Chemical | 1 of 8 results | Sep 13, 2004 | Sep 13, 2004 |
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 61–70 of 160 samples, newest first — collected July 31, 2017 to July 31, 2017. The summary above covers all 160.
20 results from the 10 samples listed here: 11 detected, 9 not detected. Across the whole record it is 228 of 708. 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 |
|---|---|---|
|
||
| 0.1483 mg/l , sample collected Jul 31, 2017 07:15, 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 Jul 31, 2017 07:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.3235 mg/l , sample collected Jul 31, 2017 07:00, 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 Jul 31, 2017 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.2231 mg/l , sample collected Jul 31, 2017 05:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0017 mg/l , sample collected Jul 31, 2017 05:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.2196 mg/l , sample collected Jul 31, 2017 04:40, 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 Jul 31, 2017 04:40, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1784 mg/l , sample collected Jul 31, 2017 06:00, 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 Jul 31, 2017 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0166 mg/l , sample collected Jul 31, 2017 04:30, 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 Jul 31, 2017 04:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.2047 mg/l , sample collected Jul 31, 2017 07:00, 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 Jul 31, 2017 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.257 mg/l , sample collected Jul 31, 2017 07:20, 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 Jul 31, 2017 07:20, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1857 mg/l , sample collected Jul 31, 2017 06:00, 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 Jul 31, 2017 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1847 mg/l , sample collected Jul 31, 2017 06:00, 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 Jul 31, 2017 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
-
- Collected
- Jul 31, 2017 07:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-090PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1483 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-089PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3235 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 05:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-088PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2231 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0017 mg/l
-
- Collected
- Jul 31, 2017 04:40
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-087PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2196 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-085PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1784 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 04:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-084PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0166 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-083PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2047 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 07:20
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-081PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.257 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-077PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1857 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 31, 2017 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170801-076PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1847 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).