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
MS0070002 , Big Creek Water Association
23 of the 57 analytes this system has been tested for have been detected at least once, across 356 samples on record.
The other 34 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 356 samples on record, detections range from November 11, 1993 to July 31, 2026. 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 | 129 of 147 results | Nov 11, 1993 | Jul 31, 2026 |
| Lead 1030 | Inorganic Chemical | 75 of 147 results | Nov 11, 1993 | Jun 22, 2022 |
| Fluoride 1025 | Inorganic Chemical | 44 of 44 results | Jun 25, 2002 | Jul 30, 2026 |
| Arsenic 1005 | Inorganic Chemical | 44 of 44 results | Jun 25, 2002 | Jun 11, 2026 |
| Barium 1010 | Inorganic Chemical | 44 of 44 results | Jun 25, 2002 | Jun 11, 2026 |
| Selenium 1045 | Inorganic Chemical | 37 of 44 results | Jun 25, 2002 | Jun 11, 2026 |
| Nickel 1036 | Inorganic Chemical | 37 of 43 results | Jun 25, 2002 | Oct 8, 2025 |
| Chromium 1020 | Inorganic Chemical | 31 of 44 results | Jun 25, 2002 | Oct 8, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 20 of 32 results | Jun 27, 2007 | Mar 26, 2025 |
| TTHM 2950 | Organic Chemical | 15 of 30 results | Jun 27, 2007 | Oct 11, 2023 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 12 of 12 results | Dec 8, 2011 | Mar 14, 2016 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 11 of 12 results | Dec 8, 2011 | Mar 14, 2016 |
| Radium-226 4020 | Radionuclide | 11 of 12 results | Dec 8, 2011 | Mar 14, 2016 |
| Nitrate 1040 | Inorganic Chemical | 9 of 43 results | May 3, 2004 | Mar 14, 2016 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 7 of 43 results | Jul 18, 2005 | Mar 14, 2016 |
| Sodium 1052 | Inorganic Chemical | 6 of 6 results | Sep 20, 2019 | Jun 11, 2026 |
| Radium-228 4030 | Radionuclide | 6 of 12 results | Dec 8, 2011 | Mar 14, 2016 |
| Nitrite 1041 | Inorganic Chemical | 6 of 43 results | Jul 18, 2005 | Jan 18, 2011 |
| Dibromoacetic Acid 2454 | Organic Chemical | 4 of 7 results | Aug 13, 2008 | Jun 4, 2019 |
| Bromoform 2942 | Organic Chemical | 3 of 8 results | Aug 4, 2014 | Sep 6, 2017 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 7 results | Jun 4, 2019 | Jun 4, 2019 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 7 results | Jun 4, 2019 | Jun 4, 2019 |
| Dibromochloromethane 2944 | Organic Chemical | 1 of 8 results | Aug 4, 2014 | Aug 4, 2014 |
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 141–150 of 356 samples, newest first — collected March 14, 2016 to September 13, 2016. The summary above covers all 356.
20 results from the 10 samples listed here: 14 detected, 6 not detected. Across the whole record it is 554 of 1,415. 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 |
|---|---|---|
|
||
| 0.7415 mg/l , sample collected Sep 13, 2016 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0009 mg/l , sample collected Sep 13, 2016 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.4854 mg/l , sample collected Sep 13, 2016 05:20, 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 Sep 13, 2016 05:20, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1856 mg/l , sample collected Sep 13, 2016 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0016 mg/l , sample collected Sep 13, 2016 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0147 mg/l , sample collected Sep 13, 2016 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 Sep 13, 2016 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.181 mg/l , sample collected Sep 13, 2016 05:35, 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 Sep 13, 2016 05:35, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.458 mg/l , sample collected Sep 12, 2016 09:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.002 mg/l , sample collected Sep 12, 2016 09:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.6 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Mar 14, 2016, sampling point TF102 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Jan 1, 2013 – Dec 31, 2018 |
|
||
| Not detected below 0.43 pci/l Minimum Reporting Level , sample collected Mar 14, 2016, sampling point TF102 | Combined Radium (-226 & -228) 4010 | Not recorded |
| Not detected below 0.299 pci/l Minimum Reporting Level , sample collected Mar 14, 2016, sampling point TF102 | Radium-226 4020 EPA method 903.1 | Jan 1, 2013 – Dec 31, 2021 |
| Not detected below 0.43 pci/l Minimum Reporting Level , sample collected Mar 14, 2016, sampling point TF102 | Radium-228 4030 EPA method 904 | Jan 1, 2013 – Dec 31, 2021 |
|
||
| 3.7 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Mar 14, 2016, sampling point TF101 | Gross Alpha, Incl. Radon & U 4002 EPA method 00-02 | Jan 1, 2013 – Dec 31, 2018 |
|
||
| 3.6 pci/l The agency recorded which kind of limit this result was below, but stored nothing as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Mar 14, 2016 15:03, sampling point TF101 | Combined Radium (-226 & -228) 4010 | Not recorded |
| 1.3 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Mar 14, 2016 15:03, sampling point TF101 | Radium-226 4020 EPA method 903.1 | Jan 1, 2013 – Dec 31, 2018 |
| 2.3 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Mar 14, 2016 15:03, sampling point TF101 | Radium-228 4030 EPA method 904 | Jan 1, 2013 – Dec 31, 2018 |
-
- Collected
- Sep 13, 2016 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160915-102PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.7415 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0009 mg/l
-
- Collected
- Sep 13, 2016 05:20
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160915-101PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.4854 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 13, 2016 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160915-099PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1856 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0016 mg/l
-
- Collected
- Sep 13, 2016 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160915-097PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0147 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 13, 2016 05:35
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160915-096PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.181 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 12, 2016 09:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 160915-100PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.458 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.002 mg/l
-
- Collected
- Mar 14, 2016
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 201603180328GA
- Laboratory
- Radiation Safety Engineering
- Monitoring period
- Jan 1, 2013 – Dec 31, 2018
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 0.6 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
- Collected
- Mar 14, 2016
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 201603180328
- Laboratory
- Radiation Safety Engineering
-
Combined Radium (-226 & -228) 4010
- Result
- Not detected below 0.43 pci/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- Not detected below 0.299 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2021
-
Radium-228 4030 EPA method 904
- Result
- Not detected below 0.43 pci/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2013 – Dec 31, 2021
-
- Collected
- Mar 14, 2016
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 201603180327GA
- Laboratory
- Radiation Safety Engineering
- Monitoring period
- Jan 1, 2013 – Dec 31, 2018
-
Gross Alpha, Incl. Radon & U 4002 EPA method 00-02
- Result
- 3.7 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
- Collected
- Mar 14, 2016 15:03
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 201603180327
- Laboratory
- Radiation Safety Engineering
-
Combined Radium (-226 & -228) 4010
- Result
- 3.6 pci/l The agency recorded which kind of limit this result was below, but stored nothing as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
- Monitoring period
- Not recorded
-
Radium-226 4020 EPA method 903.1
- Result
- 1.3 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
- Monitoring period
- Jan 1, 2013 – Dec 31, 2018
-
Radium-228 4030 EPA method 904
- Result
- 2.3 pci/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
- Monitoring period
- Jan 1, 2013 – Dec 31, 2018
Routine (10).