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
MS0110006 , Romola Water Association
34 of the 64 analytes this system has been tested for have been detected at least once, across 307 samples on record.
The other 30 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 307 samples on record, detections range from October 12, 1993 to December 29, 2025. These figures cover the whole record; the list of samples further down is narrowed.
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 | 92 of 100 results | Oct 12, 1993 | Dec 29, 2025 |
| Lead 1030 | Inorganic Chemical | 70 of 100 results | Oct 13, 1993 | Nov 4, 2025 |
| TTHM 2950 | Organic Chemical | 41 of 44 results | Sep 13, 2004 | Mar 28, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 40 of 42 results | Sep 13, 2004 | Mar 28, 2024 |
| Bromodichloromethane 2943 | Organic Chemical | 28 of 32 results | May 16, 2006 | Jul 27, 2020 |
| Dibromochloromethane 2944 | Organic Chemical | 28 of 32 results | May 16, 2006 | Jul 27, 2020 |
| Chloroform 2941 | Organic Chemical | 27 of 32 results | May 16, 2006 | Jul 27, 2020 |
| Fluoride 1025 | Inorganic Chemical | 21 of 21 results | Mar 26, 2002 | Oct 20, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 21 of 24 results | Jan 28, 2008 | Dec 18, 2019 |
| Trichloroacetic Acid 2452 | Organic Chemical | 21 of 24 results | Jan 28, 2008 | Dec 18, 2019 |
| Barium 1010 | Inorganic Chemical | 19 of 19 results | Mar 26, 2002 | Oct 20, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 12 of 12 results | Dec 5, 2011 | Jul 11, 2012 |
| Chromium 1020 | Inorganic Chemical | 11 of 19 results | Jan 28, 2004 | Oct 20, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 7 of 24 results | Oct 29, 2008 | Dec 18, 2019 |
| Dibromoacetic Acid 2454 | Organic Chemical | 7 of 24 results | Jan 28, 2008 | Dec 16, 2009 |
| Arsenic 1005 | Inorganic Chemical | 6 of 19 results | Jan 23, 2006 | Feb 29, 2024 |
| Sodium 1052 | Inorganic Chemical | 6 of 6 results | Oct 9, 2019 | Oct 11, 2021 |
| Nickel 1036 | Inorganic Chemical | 6 of 19 results | Mar 26, 2002 | Oct 1, 2018 |
| Sulfate 1055 | Inorganic Chemical | 4 of 4 results | Mar 26, 2002 | Oct 11, 2021 |
| Selenium 1045 | Inorganic Chemical | 4 of 19 results | Feb 16, 2005 | Mar 26, 2008 |
| Monobromoacetic Acid 2453 | Organic Chemical | 3 of 24 results | Apr 29, 2009 | Sep 28, 2016 |
| Calcium 1016 | Inorganic Chemical | 2 of 2 results | Oct 11, 2021 | Oct 11, 2021 |
| Chloride 1017 | Inorganic Chemical | 2 of 2 results | Oct 11, 2021 | Oct 11, 2021 |
| Conductivity @ 25 C Umhos/CM 1064 | Water Quality | 2 of 2 results | Oct 11, 2021 | Oct 11, 2021 |
| Color 1905 | Water Quality | 2 of 2 results | Oct 11, 2021 | Oct 11, 2021 |
| Alkalinity, Total 1927 | Water Quality | 2 of 2 results | Oct 11, 2021 | Oct 11, 2021 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 2 of 45 results | Jan 24, 2018 | Jan 24, 2018 |
| Nitrate 1040 | Inorganic Chemical | 2 of 45 results | Jan 24, 2018 | Jan 24, 2018 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 2 of 3 results | Mar 20, 2012 | Jun 13, 2012 |
| Combined Uranium 4006 | Radionuclide | 2 of 12 results | Jun 13, 2012 | Jun 13, 2012 |
| Cadmium 1015 | Inorganic Chemical | 2 of 19 results | Jan 23, 2006 | Jan 23, 2006 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 1 of 16 results | Mar 20, 2012 | Mar 20, 2012 |
| Radium-228 4030 | Radionuclide | 1 of 15 results | Mar 20, 2012 | Mar 20, 2012 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 1 of 3 results | Mar 20, 2012 | Mar 20, 2012 |
Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.
Choose a date range
The most recent samples, result by result
The table below lists 11–20 of 23 samples, newest first — collected September 29, 2025 to October 20, 2025. The summary above covers all 23.
22 results from the 10 samples listed here: 14 detected, 8 not detected. Across the whole record it is 497 of 1,206. 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 8 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 |
|---|---|---|
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 20, 2025 14:00, sampling point TF102 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 20, 2025 14:00, sampling point TF102 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 20, 2025 14:00, sampling point TF102 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Oct 20, 2025 13:40, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Oct 20, 2025 13:40, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Oct 20, 2025 13:40, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.391 mg/l , sample collected Sep 29, 2025 06:50, sampling point LC0004 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 68.6 ug/l , sample collected Sep 29, 2025 06:50, sampling point LC0004 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.0124 mg/l , sample collected Sep 29, 2025 07:00, sampling point LC0009 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 0.5 ug/l , sample collected Sep 29, 2025 07:00, sampling point LC0009 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.0078 mg/l , sample collected Sep 29, 2025 06:25, sampling point LC0005 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 175 ug/l , sample collected Sep 29, 2025 06:25, sampling point LC0005 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.0088 mg/l , sample collected Sep 29, 2025 07:00, sampling point LC0006 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 7 ug/l , sample collected Sep 29, 2025 07:00, sampling point LC0006 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.0122 mg/l , sample collected Sep 29, 2025 09:00, sampling point LC0018 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 0.5 ug/l , sample collected Sep 29, 2025 09:00, sampling point LC0018 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 29, 2025 06:30, sampling point LC0014 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Sep 29, 2025 06:30, sampling point LC0014 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.0084 mg/l , sample collected Sep 29, 2025 07:30, sampling point LC0016 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 8.4 ug/l , sample collected Sep 29, 2025 07:30, sampling point LC0016 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 0.01 mg/l , sample collected Sep 29, 2025 05:30, sampling point LC0013 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
| 3.4 ug/l , sample collected Sep 29, 2025 05:30, sampling point LC0013 | Lead 1030 EPA method 200.8 | Jan 1, 2025 – Dec 31, 2025 |
-
- Collected
- Oct 20, 2025 14:00
- Sampling point
- TF102
- Sample type
- Routine
- Lab sample
- NI-251020-002
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
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
- Oct 20, 2025 13:40
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NI-251020-001
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
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
- Sep 29, 2025 06:50
- Sampling point
- LC0004 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-010
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.391 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 68.6 ug/l
-
- Collected
- Sep 29, 2025 07:00
- Sampling point
- LC0009 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-009
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0124 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.5 ug/l
-
- Collected
- Sep 29, 2025 06:25
- Sampling point
- LC0005 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-008
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0078 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 175 ug/l
-
- Collected
- Sep 29, 2025 07:00
- Sampling point
- LC0006 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-007
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0088 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 7 ug/l
-
- Collected
- Sep 29, 2025 09:00
- Sampling point
- LC0018 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-006
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0122 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.5 ug/l
-
- Collected
- Sep 29, 2025 06:30
- Sampling point
- LC0014 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-005
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Sep 29, 2025 07:30
- Sampling point
- LC0016 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-004
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0084 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 8.4 ug/l
-
- Collected
- Sep 29, 2025 05:30
- Sampling point
- LC0013 Location withheld
- Sample type
- Routine
- Lab sample
- PB-250930-003
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.01 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 3.4 ug/l
Routine (10).