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
MS0440003 , Columbus Light & Water
22 of the 59 analytes this system has been tested for have been detected at least once, across 487 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 487 samples on record, detections range from July 16, 2002 to June 22, 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 |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 250 of 250 results | Jun 17, 2004 | Jun 27, 2024 |
| Lead 1030 | Inorganic Chemical | 40 of 250 results | Jun 17, 2004 | Jun 27, 2024 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 34 of 53 results | Mar 21, 2006 | Apr 21, 2025 |
| TTHM 2950 | Organic Chemical | 33 of 53 results | Mar 8, 2004 | Jun 22, 2026 |
| Chloroform 2941 | Organic Chemical | 21 of 35 results | Aug 1, 2006 | Jun 22, 2026 |
| Barium 1010 | Inorganic Chemical | 18 of 18 results | Jul 16, 2002 | Mar 10, 2025 |
| Fluoride 1025 | Inorganic Chemical | 18 of 18 results | Jul 16, 2002 | Mar 10, 2025 |
| Nickel 1036 | Inorganic Chemical | 10 of 18 results | Jul 16, 2002 | Mar 10, 2025 |
| Monochloroacetic Acid 2450 | Organic Chemical | 10 of 32 results | Nov 11, 2013 | Jun 12, 2018 |
| Dichloroacetic Acid 2451 | Organic Chemical | 10 of 32 results | Aug 24, 2009 | Jun 27, 2016 |
| Bromodichloromethane 2943 | Organic Chemical | 9 of 35 results | Aug 1, 2006 | Jun 22, 2026 |
| Monobromoacetic Acid 2453 | Organic Chemical | 5 of 32 results | Aug 17, 2010 | Jun 12, 2018 |
| Sodium 1052 | Inorganic Chemical | 4 of 4 results | Mar 2, 2022 | Feb 10, 2025 |
| Radium-226 4020 | Radionuclide | 4 of 8 results | May 30, 2018 | Sep 3, 2019 |
| Chromium 1020 | Inorganic Chemical | 4 of 18 results | Jul 16, 2002 | Jul 9, 2012 |
| Sulfate 1055 | Inorganic Chemical | 4 of 4 results | Jul 16, 2002 | Mar 10, 2004 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 2 of 4 results | May 30, 2018 | Sep 3, 2019 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 2 of 8 results | May 30, 2018 | Sep 3, 2019 |
| Radium-228 4030 | Radionuclide | 2 of 8 results | May 30, 2018 | Sep 3, 2019 |
| Dibromochloromethane 2944 | Organic Chemical | 1 of 35 results | Jun 22, 2026 | Jun 22, 2026 |
| Selenium 1045 | Inorganic Chemical | 1 of 18 results | Mar 10, 2004 | Mar 10, 2004 |
| Benzene 2990 | Organic Chemical | 1 of 28 results | Sep 18, 2002 | Sep 18, 2002 |
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 11–20 of 487 samples, newest first — collected June 27, 2024 to March 10, 2025. The summary above covers all 487.
20 results from the 10 samples listed here: 10 detected, 10 not detected. Across the whole record it is 483 of 1,899. 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 6 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 Mar 10, 2025 13:58, sampling point TF081 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 10, 2025 13:58, sampling point TF081 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 10, 2025 13:58, sampling point TF081 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 10, 2025 13:32, sampling point TF080 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 10, 2025 13:32, sampling point TF080 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 10, 2025 13:32, sampling point TF080 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2025 – Dec 31, 2025 |
|
||
| 3.97 mg/l , sample collected Feb 10, 2025 13:12, sampling point TF081 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 2.19 mg/l , sample collected Feb 10, 2025 13:33, sampling point TF080 | Sodium 1052 EPA method 200.7 | Jan 1, 2023 – Dec 31, 2025 |
|
||
| 0.0108 mg/l , sample collected Jun 27, 2024 11:27, sampling point LC0027 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 11:27, sampling point LC0027 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
|
||
| 0.0066 mg/l , sample collected Jun 27, 2024 10:41, sampling point LC0013 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
| 0.8 ug/l , sample collected Jun 27, 2024 10:41, sampling point LC0013 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
|
||
| 0.0033 mg/l , sample collected Jun 27, 2024 09:55, sampling point LC0064 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 09:55, sampling point LC0064 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
|
||
| 0.0072 mg/l , sample collected Jun 27, 2024 09:25, sampling point LC0044 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 09:25, sampling point LC0044 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
|
||
| 0.0193 mg/l , sample collected Jun 27, 2024 09:00, sampling point LC0057 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
| 0.8 ug/l , sample collected Jun 27, 2024 09:00, sampling point LC0057 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
|
||
| 0.0006 mg/l , sample collected Jun 27, 2024 08:46, sampling point LC0030 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 27, 2024 08:46, sampling point LC0030 | Lead 1030 EPA method 200.8 | Jan 1, 2022 – Dec 31, 2024 |
-
- Collected
- Mar 10, 2025 13:58
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- NI-250311-051
- 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
- Mar 10, 2025 13:32
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NI-250311-050
- 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
- Feb 10, 2025 13:12
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- NA-250211-018
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 3.97 mg/l
-
- Collected
- Feb 10, 2025 13:33
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- NA-250211-019
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2023 – Dec 31, 2025
-
Sodium 1052 EPA method 200.7
- Result
- 2.19 mg/l
-
- Collected
- Jun 27, 2024 11:27
- Sampling point
- LC0027 Location withheld
- Sample type
- Routine
- Lab sample
- PB-240628-040
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0108 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jun 27, 2024 10:41
- Sampling point
- LC0013 Location withheld
- Sample type
- Routine
- Lab sample
- PB-240628-039
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0066 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.8 ug/l
-
- Collected
- Jun 27, 2024 09:55
- Sampling point
- LC0064 Location withheld
- Sample type
- Routine
- Lab sample
- PB-240628-038
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0033 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jun 27, 2024 09:25
- Sampling point
- LC0044 Location withheld
- Sample type
- Routine
- Lab sample
- PB-240628-037
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0072 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
-
- Collected
- Jun 27, 2024 09:00
- Sampling point
- LC0057 Location withheld
- Sample type
- Routine
- Lab sample
- PB-240628-036
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0193 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.8 ug/l
-
- Collected
- Jun 27, 2024 08:46
- Sampling point
- LC0030 Location withheld
- Sample type
- Routine
- Lab sample
- PB-240628-035
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0006 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
Routine (10).