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
MS0770002 , Clara Water Association
35 of the 74 analytes this system has been tested for have been detected at least once, across 1,028 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 1,028 samples on record, detections range from November 3, 2003 to June 4, 2026. 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 | 799 of 801 results | Jun 24, 2004 | Jun 4, 2026 |
| Lead 1030 | Inorganic Chemical | 507 of 801 results | Jun 24, 2004 | Jun 3, 2026 |
| Barium 1010 | Inorganic Chemical | 32 of 32 results | Nov 3, 2003 | Apr 22, 2025 |
| Fluoride 1025 | Inorganic Chemical | 19 of 36 results | Nov 3, 2003 | Apr 22, 2025 |
| TTHM 2950 | Organic Chemical | 8 of 17 results | Sep 17, 2007 | Nov 18, 2024 |
| Chromium 1020 | Inorganic Chemical | 7 of 32 results | Nov 3, 2003 | Apr 22, 2025 |
| Sodium 1052 | Inorganic Chemical | 7 of 7 results | Nov 6, 2009 | Apr 3, 2023 |
| Sulfate 1055 | Inorganic Chemical | 7 of 8 results | Nov 3, 2003 | Sep 1, 2021 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 6 of 16 results | Aug 3, 2010 | Nov 18, 2024 |
| Chloroform 2941 | Organic Chemical | 6 of 12 results | Sep 17, 2007 | Nov 18, 2024 |
| Nickel 1036 | Inorganic Chemical | 5 of 32 results | Nov 3, 2003 | Apr 22, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 10 results | Dec 6, 2011 | Jul 10, 2012 |
| Calcium 1016 | Inorganic Chemical | 4 of 4 results | Nov 6, 2009 | Sep 1, 2021 |
| Alkalinity, Total 1927 | Water Quality | 4 of 4 results | Nov 6, 2009 | Sep 1, 2021 |
| Chloride 1017 | Inorganic Chemical | 3 of 4 results | Sep 1, 2021 | Sep 1, 2021 |
| Conductivity @ 25 C Umhos/CM 1064 | Water Quality | 3 of 3 results | Sep 1, 2021 | Sep 1, 2021 |
| Color 1905 | Water Quality | 3 of 4 results | Nov 6, 2009 | Sep 1, 2021 |
| Dichloroacetic Acid 2451 | Organic Chemical | 2 of 11 results | Aug 29, 2016 | Nov 18, 2024 |
| Carbon Tetrachloride 2982 | Organic Chemical | 2 of 40 results | Oct 24, 2022 | Oct 24, 2022 |
| Trichloroacetic Acid 2452 | Organic Chemical | 1 of 11 results | Nov 18, 2024 | Nov 18, 2024 |
| Bromodichloromethane 2943 | Organic Chemical | 1 of 12 results | Nov 18, 2024 | Nov 18, 2024 |
| Dibromochloromethane 2944 | Organic Chemical | 1 of 12 results | Nov 18, 2024 | Nov 18, 2024 |
| Cyanide 1024 | Inorganic Chemical | 1 of 38 results | Aug 22, 2022 | Aug 22, 2022 |
| Monobromoacetic Acid 2453 | Organic Chemical | 1 of 11 results | Oct 26, 2020 | Oct 26, 2020 |
| Iron 1028 | Inorganic Chemical | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Magnesium 1031 | Inorganic Chemical | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Manganese 1032 | Inorganic Chemical | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Potassium 1042 | Inorganic Chemical | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Iron, Field Result FEFD | Inorganic Chemical | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | Nov 6, 2009 | Nov 6, 2009 |
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 1–10 of 108 samples, newest first — collected June 3, 2026 to June 4, 2026. The summary above covers all 108.
20 results from the 10 samples listed here: 15 detected, 5 not detected. Across the whole record it is 1,445 of 3,258. 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 |
|---|---|---|
|
||
| 433 ug/l , sample collected Jun 4, 2026, sampling point LC0005 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 4, 2026, sampling point LC0005 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 676 ug/l , sample collected Jun 3, 2026, sampling point LC0016 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2026, sampling point LC0016 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 626 ug/l , sample collected Jun 3, 2026, sampling point LC0002 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2026, sampling point LC0002 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 265 ug/l , sample collected Jun 3, 2026, sampling point LC0057 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| 38.2 ug/l , sample collected Jun 3, 2026, sampling point LC0057 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 218 ug/l , sample collected Jun 3, 2026, sampling point LC0024 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2026, sampling point LC0024 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 965 ug/l , sample collected Jun 3, 2026, sampling point LC0049 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| 2.2 ug/l , sample collected Jun 3, 2026, sampling point LC0049 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 770 ug/l , sample collected Jun 3, 2026, sampling point LC0023 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| 7 ug/l , sample collected Jun 3, 2026, sampling point LC0023 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 435 ug/l , sample collected Jun 3, 2026, sampling point LC0033 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| 1.8 ug/l , sample collected Jun 3, 2026, sampling point LC0033 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 71.8 ug/l , sample collected Jun 3, 2026, sampling point LC0041 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| 6.3 ug/l , sample collected Jun 3, 2026, sampling point LC0041 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
|
||
| 1140 ug/l , sample collected Jun 3, 2026, sampling point LC0036 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 3, 2026, sampling point LC0036 | Lead 1030 EPA method 200.8 | Jan 1, 2026 – Jun 30, 2026 |
-
- Collected
- Jun 4, 2026
- Sampling point
- LC0005 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774006
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 433 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0016 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774020
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 676 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0002 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774019
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 626 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0057 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774018
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 265 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 38.2 ug/l
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0024 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774017
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 218 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0049 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774016
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 965 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 2.2 ug/l
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0023 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774015
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 770 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 7 ug/l
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0033 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774014
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 435 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 1.8 ug/l
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0041 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774013
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 71.8 ug/l
-
Lead 1030 EPA method 200.8
- Result
- 6.3 ug/l
-
- Collected
- Jun 3, 2026
- Sampling point
- LC0036 Location withheld
- Sample type
- Routine
- Lab sample
- 35042774012
- Laboratory
- Pace Analytical Services, LLC
- Monitoring period
- Jan 1, 2026 – Jun 30, 2026
-
Copper, Free 1022 EPA method 200.8
- Result
- 1140 ug/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 1 ug/l Minimum Reporting Level
Routine (10).