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
MS0340001 , Calhoun Water Association
17 of the 54 analytes this system has been tested for have been detected at least once, across 297 samples on record.
The other 37 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 297 samples on record, detections range from September 24, 2003 to September 8, 2025. 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 | 139 of 141 results | Sep 11, 2007 | Sep 24, 2024 |
| Lead 1030 | Inorganic Chemical | 33 of 141 results | Sep 11, 2007 | Jul 24, 2024 |
| Barium 1010 | Inorganic Chemical | 20 of 20 results | Sep 24, 2003 | Feb 26, 2025 |
| TTHM 2950 | Organic Chemical | 8 of 21 results | Aug 7, 2007 | Sep 8, 2025 |
| Sodium 1052 | Inorganic Chemical | 6 of 6 results | Sep 26, 2019 | Feb 6, 2025 |
| Chloroform 2941 | Organic Chemical | 5 of 16 results | May 15, 2024 | Sep 8, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 5 of 16 results | May 15, 2024 | Sep 8, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 4 of 21 results | Aug 7, 2007 | Sep 8, 2020 |
| Nickel 1036 | Inorganic Chemical | 4 of 20 results | Jan 12, 2009 | Oct 14, 2019 |
| Sulfate 1055 | Inorganic Chemical | 4 of 4 results | Sep 24, 2003 | Feb 23, 2004 |
| Chromium 1020 | Inorganic Chemical | 3 of 20 results | Apr 9, 2012 | Apr 8, 2015 |
| Fluoride 1025 | Inorganic Chemical | 2 of 20 results | Mar 21, 2005 | Feb 26, 2025 |
| Monobromoacetic Acid 2453 | Organic Chemical | 2 of 15 results | Aug 14, 2018 | Sep 8, 2020 |
| Cyanide 1024 | Inorganic Chemical | 2 of 20 results | Sep 21, 2009 | May 7, 2012 |
| Dichloromethane 2964 | Organic Chemical | 2 of 24 results | Aug 4, 2004 | Aug 4, 2004 |
| Dibromochloromethane 2944 | Organic Chemical | 1 of 16 results | Sep 8, 2025 | Sep 8, 2025 |
| Nitrite 1041 | Inorganic Chemical | 1 of 44 results | Feb 13, 2012 | Feb 13, 2012 |
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 51–60 of 297 samples, newest first — collected July 14, 2021 to March 23, 2022. The summary above covers all 297.
17 results from the 10 samples listed here: 5 detected, 12 not detected. Across the whole record it is 241 of 1,360. 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 3 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 1 ug/l Minimum Reporting Level , sample collected Mar 23, 2022 13:20, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Not recorded |
|
||
| 13.7 mg/l , sample collected Feb 8, 2022 11:50, sampling point TF081 | Sodium 1052 EPA method 200.7 | Not recorded |
|
||
| 17.6 mg/l , sample collected Feb 8, 2022 13:10, sampling point TF080 | Sodium 1052 EPA method 200.7 | Not recorded |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 8, 2022 11:40, sampling point TF081 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2022 – Dec 31, 2022 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 8, 2022 11:40, sampling point TF081 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2022 – Dec 31, 2022 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 8, 2022 11:40, sampling point TF081 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2022 – Dec 31, 2022 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 8, 2022 22:00, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2022 – Dec 31, 2022 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 8, 2022 22:00, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2022 – Dec 31, 2022 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 8, 2022 22:00, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2022 – Dec 31, 2022 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 22, 2021 13:20, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2021 – Dec 31, 2021 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 22, 2021 13:00, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2021 – Dec 31, 2021 |
|
||
| 0.0112 mg/l , sample collected Jul 27, 2021 04:30, sampling point LC0032 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2019 – Dec 31, 2021 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 04:30, sampling point LC0032 | Lead 1030 EPA method 200.8 | Jan 1, 2019 – Dec 31, 2021 |
|
||
| 0.0109 mg/l , sample collected Jul 27, 2021 08:00, sampling point LC0051 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2019 – Dec 31, 2021 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 27, 2021 08:00, sampling point LC0051 | Lead 1030 EPA method 200.8 | Jan 1, 2019 – Dec 31, 2021 |
|
||
| 0.0122 mg/l , sample collected Jul 14, 2021 06:15, sampling point LC0029 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2019 – Dec 31, 2021 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 14, 2021 06:15, sampling point LC0029 | Lead 1030 EPA method 200.8 | Jan 1, 2019 – Dec 31, 2021 |
-
- Collected
- Mar 23, 2022 13:20
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-220324-021
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Feb 8, 2022 11:50
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- NA-220209-026
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Sodium 1052 EPA method 200.7
- Result
- 13.7 mg/l
-
- Collected
- Feb 8, 2022 13:10
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NA-220209-025
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Sodium 1052 EPA method 200.7
- Result
- 17.6 mg/l
-
- Collected
- Feb 8, 2022 11:40
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- NI-220209-008
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
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
- Feb 8, 2022 22:00
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NI-220209-007
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2022
-
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 22, 2021 13:20
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- HA-210923-024
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2021 – Dec 31, 2021
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Sep 22, 2021 13:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-210923-024
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2021 – Dec 31, 2021
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jul 27, 2021 04:30
- Sampling point
- LC0032 Location withheld
- Sample type
- Routine
- Lab sample
- PB-210729-031
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2019 – Dec 31, 2021
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0112 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 27, 2021 08:00
- Sampling point
- LC0051 Location withheld
- Sample type
- Routine
- Lab sample
- PB-210729-030
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2019 – Dec 31, 2021
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0109 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jul 14, 2021 06:15
- Sampling point
- LC0029 Location withheld
- Sample type
- Routine
- Lab sample
- PB-210715-049
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2019 – Dec 31, 2021
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0122 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
Routine (10).