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
MS0030005 , Mary Springs Water Association
21 of the 55 analytes this system has been tested for have been detected at least once, across 359 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 359 samples on record, detections range from August 16, 1993 to July 21, 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 |
|---|---|---|---|---|
| Lead 1030 | Inorganic Chemical | 161 of 222 results | Aug 16, 1993 | Jul 21, 2026 |
| Copper, Free 1022 | Inorganic Chemical | 153 of 222 results | Jun 5, 1995 | Jul 21, 2026 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 11 of 31 results | Jun 26, 2007 | Apr 8, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 10 of 38 results | Oct 18, 2010 | Aug 25, 2021 |
| Arsenic 1005 | Inorganic Chemical | 5 of 5 results | Apr 18, 2011 | Jan 9, 2024 |
| Barium 1010 | Inorganic Chemical | 5 of 5 results | Apr 18, 2011 | Jan 9, 2024 |
| Nickel 1036 | Inorganic Chemical | 5 of 5 results | Apr 18, 2011 | Jan 9, 2024 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 5 results | Dec 5, 2011 | Jul 10, 2012 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 5 of 5 results | Dec 5, 2011 | Jul 10, 2012 |
| Radium-226 4020 | Radionuclide | 5 of 5 results | Dec 5, 2011 | Jul 10, 2012 |
| Chromium 1020 | Inorganic Chemical | 4 of 5 results | May 5, 2014 | Jan 9, 2024 |
| TTHM 2950 | Organic Chemical | 4 of 31 results | May 3, 2004 | Sep 28, 2010 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 16, 2019 | Oct 16, 2024 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 3 of 17 results | Mar 14, 2016 | Jan 6, 2022 |
| Nitrate 1040 | Inorganic Chemical | 3 of 17 results | Mar 14, 2016 | Jan 6, 2022 |
| Nitrite 1041 | Inorganic Chemical | 2 of 17 results | Jan 6, 2022 | Jan 11, 2023 |
| Fluoride 1025 | Inorganic Chemical | 1 of 5 results | Jan 9, 2024 | Jan 9, 2024 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 8 results | Sep 12, 2017 | Sep 12, 2017 |
| Dichloroacetic Acid 2451 | Organic Chemical | 1 of 8 results | Jul 18, 2011 | Jul 18, 2011 |
| Trichloroacetic Acid 2452 | Organic Chemical | 1 of 8 results | Jul 18, 2011 | Jul 18, 2011 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 8 results | Jul 18, 2011 | Jul 18, 2011 |
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 1–10 of 359 samples, newest first — collected July 21, 2026 to July 21, 2026. The summary above covers all 359.
20 results from the 10 samples listed here: 14 detected, 6 not detected. Across the whole record it is 389 of 1,514. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
We withheld the location of 10 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 276 ug/l , sample collected Jul 21, 2026, sampling point LC0014 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2026, sampling point LC0014 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 122 ug/l , sample collected Jul 21, 2026, sampling point LC0011 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2026, sampling point LC0011 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 694 ug/l , sample collected Jul 21, 2026, sampling point LC0006 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| 1.3 ug/l , sample collected Jul 21, 2026, sampling point LC0006 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 1520 ug/l , sample collected Jul 21, 2026, sampling point LC0017 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2026, sampling point LC0017 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 601 ug/l , sample collected Jul 21, 2026, sampling point LC0004 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2026, sampling point LC0004 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 9.7 ug/l , sample collected Jul 21, 2026, sampling point LC0015 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| 6.1 ug/l , sample collected Jul 21, 2026, sampling point LC0015 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 1060 ug/l , sample collected Jul 21, 2026, sampling point LC0008 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2026, sampling point LC0008 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 340 ug/l , sample collected Jul 21, 2026, sampling point LC0003 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| 1.9 ug/l , sample collected Jul 21, 2026, sampling point LC0003 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 548 ug/l , sample collected Jul 21, 2026, sampling point LC0020 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| 1.7 ug/l , sample collected Jul 21, 2026, sampling point LC0020 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
|
||
| 1020 ug/l , sample collected Jul 21, 2026, sampling point LC0001 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 21, 2026, sampling point LC0001 | Lead 1030 EPA method 200.8 | Jan 1, 2024 – Dec 31, 2026 |
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0014 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961010
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 276 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0011 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961009
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 122 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0006 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961008
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 694 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 1.3 ug/l
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0017 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961007
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 1520 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0004 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961006
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 601 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0015 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961005
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 9.7 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 6.1 ug/l
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0008 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961004
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 1060 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0003 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961003
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 340 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 1.9 ug/l
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0020 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961002
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 548 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 1.7 ug/l
-
- Collected
- Jul 21, 2026
- Sampling point
- LC0001 Location withheld
- Sample type
- Routine
- Lab sample
- 35052961001
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2024 – Dec 31, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 1020 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
Routine (10).