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 381–390 of 487 samples, newest first — collected August 1, 2006 to September 13, 2007. The summary above covers all 487.
25 results from the 10 samples listed here: 11 detected, 14 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.
Units in this table
TTHM is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.0195 mg/l , sample collected Sep 13, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.0007 mg/l , sample collected Sep 13, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0346 mg/l , sample collected Sep 13, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0033 mg/l , sample collected Sep 13, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 13, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0032 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 11, 2007, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 11, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 11, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 11, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 11, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Jun 11, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 7, 2007, sampling point TF081 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 7, 2007, sampling point TF081 | Nitrate 1040 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 7, 2007, sampling point TF081 | Nitrite 1041 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 7, 2007, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 7, 2007, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 7, 2007, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| 0.0009 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Nov 14, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| 1.27 ug/l , sample collected Nov 14, 2006, sampling point MRT000 | Chloroform 2941 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 14, 2006, sampling point MRT000 | Bromoform 2942 EPA method 551.1 | Not recorded |
| 1.01 ug/l , sample collected Nov 14, 2006, sampling point MRT000 | Bromodichloromethane 2943 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 14, 2006, sampling point MRT000 | Dibromochloromethane 2944 EPA method 551.1 | Not recorded |
| 2.28 ug/l , sample collected Nov 14, 2006, sampling point MRT000 | TTHM 2950 EPA method 551.1 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| 0.0036 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Aug 1, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2006 – Dec 31, 2006 |
-
- Collected
- Sep 13, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070919-169PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0195 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0007 mg/l
-
- Collected
- Sep 13, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070919-168PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0346 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 13, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070919-167PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0033 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jun 11, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070612-008HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0032 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
- Collected
- Jun 11, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070612-008TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
- Collected
- May 7, 2007
- Sampling point
- TF081 Treatment Plant T081
- Sample type
- Routine
- Lab sample
- 070508-011NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- May 7, 2007
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 070508-021NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Nov 14, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 061115-007HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0009 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
-
- Collected
- Nov 14, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 061115-007TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 551.1
- Result
- 1.27 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 551.1
- Result
- 1.01 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 551.1
- Result
- 2.28 ug/l
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
- Collected
- Aug 1, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 060802-007HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0036 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType.
Routine (10).