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
MS0330002 , Carson Central Water Assn
17 of the 59 analytes this system has been tested for have been detected at least once, across 187 samples on record.
The other 42 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 187 samples on record, detections range from September 24, 2003 to February 24, 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 | 76 of 76 results | Jun 24, 2004 | Aug 13, 2024 |
| Lead 1030 | Inorganic Chemical | 60 of 76 results | Jun 24, 2004 | Aug 13, 2024 |
| Xylenes, Total 2955 | Organic Chemical | 23 of 44 results | May 6, 2008 | Feb 24, 2025 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 22 of 22 results | May 17, 2004 | Feb 24, 2025 |
| Nitrate 1040 | Inorganic Chemical | 22 of 22 results | May 17, 2004 | Feb 24, 2025 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Sep 24, 2003 | Feb 24, 2025 |
| Ethylbenzene 2992 | Organic Chemical | 5 of 44 results | May 6, 2008 | Mar 11, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 3 of 8 results | Sep 24, 2008 | Feb 11, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 17, 2019 | Feb 3, 2025 |
| Chromium 1020 | Inorganic Chemical | 3 of 10 results | Feb 23, 2004 | Apr 6, 2015 |
| Nickel 1036 | Inorganic Chemical | 3 of 10 results | Feb 23, 2004 | Jan 12, 2009 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 2 of 4 results | Jun 27, 2012 | Sep 18, 2012 |
| TTHM 2950 | Organic Chemical | 2 of 7 results | Aug 9, 2007 | Sep 24, 2008 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 5 results | Aug 14, 2018 | Aug 14, 2018 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 1 of 2 results | Sep 29, 2011 | Sep 29, 2011 |
| Radium-226 4020 | Radionuclide | 1 of 2 results | Sep 29, 2011 | Sep 29, 2011 |
| Radium-228 4030 | Radionuclide | 1 of 2 results | Sep 29, 2011 | Sep 29, 2011 |
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 7 samples collected between September 25, 2024 and September 25, 2026 are listed below, newest first.
39 results from the 7 samples listed here: 6 detected, 33 not detected. 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 1 sampling point 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 |
|---|---|---|
|
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| Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Aug 26, 2025 12:45, sampling point TF101 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2023 – Dec 31, 2025 |
|
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| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Arsenic 1005 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| 0.0165 mg/l , sample collected Feb 24, 2025 12:00, sampling point TF101 | Barium 1010 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Cadmium 1015 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Chromium 1020 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Fluoride 1025 EPA method QC 10-109-12-2-A | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Mercury 1035 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Selenium 1045 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 24, 2025 12:00, sampling point TF101 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2023 – Dec 31, 2025 |
|
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| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | 1,2,4-Trichlorobenzene 2378 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Cis-1,2-Dichloroethylene 2380 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| 2.258 ug/l , sample collected Feb 24, 2025 12:10, sampling point TF101 | Xylenes, Total 2955 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Dichloromethane 2964 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | O-Dichlorobenzene 2968 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | P-Dichlorobenzene 2969 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Vinyl Chloride 2976 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | 1,1-Dichloroethylene 2977 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Trans-1,2-Dichloroethylene 2979 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | 1,2-Dichloroethane 2980 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | 1,1,1-Trichloroethane 2981 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Carbon Tetrachloride 2982 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | 1,2-Dichloropropane 2983 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Trichloroethylene 2984 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | 1,1,2-Trichloroethane 2985 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Tetrachloroethylene 2987 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Chlorobenzene 2989 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Benzene 2990 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Toluene 2991 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Ethylbenzene 2992 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Feb 24, 2025 12:10, sampling point TF101 | Styrene 2996 EPA method 524.2 | Jan 1, 2025 – Dec 31, 2025 |
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| 0.51 mg/l , sample collected Feb 24, 2025 12:05, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| 0.51 mg/l , sample collected Feb 24, 2025 12:05, 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 Feb 24, 2025 12:05, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
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| 9.4 ug/l , sample collected Feb 11, 2025 12:15, sampling point SMD | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2023 – Dec 31, 2025 |
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| Not detected below 1 ug/l Minimum Reporting Level , sample collected Feb 11, 2025 12:15, sampling point SMD | TTHM 2950 EPA method 524.2 | Jan 1, 2023 – Dec 31, 2025 |
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| 39.7 mg/l , sample collected Feb 3, 2025 12:05, sampling point TF101 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
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- Collected
- Aug 26, 2025 12:45
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- CN-250827-002
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.015 mg/l Minimum Reporting Level
-
- Collected
- Feb 24, 2025 12:00
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- IN-250225-045
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Barium 1010 EPA method 200.8
- Result
- 0.0165 mg/l
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Fluoride 1025 EPA method QC 10-109-12-2-A
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0025 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
- Collected
- Feb 24, 2025 12:10
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- VO-250225-012
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
1,2,4-Trichlorobenzene 2378 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Cis-1,2-Dichloroethylene 2380 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Xylenes, Total 2955 EPA method 524.2
- Result
- 2.258 ug/l
-
Dichloromethane 2964 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
O-Dichlorobenzene 2968 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
P-Dichlorobenzene 2969 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Vinyl Chloride 2976 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,1-Dichloroethylene 2977 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Trans-1,2-Dichloroethylene 2979 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,2-Dichloroethane 2980 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,1,1-Trichloroethane 2981 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Carbon Tetrachloride 2982 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,2-Dichloropropane 2983 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Trichloroethylene 2984 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
1,1,2-Trichloroethane 2985 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Tetrachloroethylene 2987 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Chlorobenzene 2989 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Benzene 2990 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Toluene 2991 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Ethylbenzene 2992 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
Styrene 2996 EPA method 524.2
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Feb 24, 2025 12:05
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NI-250225-050
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2025 – Dec 31, 2025
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- 0.51 mg/l
-
Nitrate 1040 EPA method QC10107041C
- Result
- 0.51 mg/l
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Feb 11, 2025 12:15
- Sampling point
- SMD Location withheld
- Sample type
- Routine
- Lab sample
- HA-250212-003
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 9.4 ug/l
-
- Collected
- Feb 11, 2025 12:15
- Sampling point
- SMD Location withheld
- Sample type
- Routine
- Lab sample
- TH-250212-003
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Feb 3, 2025 12:05
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NA-250204-014
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 39.7 mg/l
Routine (7).