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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

MS0680002 , Charleston Utilities

34 of the 73 analytes this system has been tested for have been detected at least once, across 343 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 343 samples on record, detections range from October 27, 2003 to April 7, 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.

Every analyte ever detected for Charleston Utilities, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 202 of 202 results Sep 30, 2004 Aug 3, 2023
Lead 1030 Inorganic Chemical 121 of 202 results Sep 30, 2004 Aug 3, 2023
Barium 1010 Inorganic Chemical 15 of 15 results Oct 27, 2003 Apr 7, 2025
Fluoride 1025 Inorganic Chemical 12 of 21 results Mar 29, 2004 Apr 7, 2025
TTHM 2950 Organic Chemical 12 of 18 results Sep 17, 2007 Nov 25, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 10 of 18 results Jul 6, 2010 Nov 25, 2024
Sodium 1052 Inorganic Chemical 10 of 10 results Feb 12, 2009 Dec 13, 2023
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 12, 2012 Oct 9, 2012
Chromium 1020 Inorganic Chemical 9 of 15 results Oct 27, 2003 Apr 7, 2025
Chloroform 2941 Organic Chemical 7 of 13 results Aug 22, 2016 Nov 25, 2024
Nickel 1036 Inorganic Chemical 6 of 15 results Feb 10, 2010 Apr 7, 2025
Dichloroacetic Acid 2451 Organic Chemical 6 of 13 results Sep 9, 2013 Nov 25, 2024
Calcium 1016 Inorganic Chemical 6 of 6 results Feb 12, 2009 Mar 30, 2022
Chloride 1017 Inorganic Chemical 6 of 6 results Feb 12, 2009 Mar 30, 2022
Alkalinity, Total 1927 Water Quality 6 of 6 results Feb 12, 2009 Mar 30, 2022
Trichloroacetic Acid 2452 Organic Chemical 5 of 13 results Sep 9, 2013 Nov 25, 2024
Iron 1028 Inorganic Chemical 5 of 5 results Feb 12, 2009 May 13, 2010
Magnesium 1031 Inorganic Chemical 5 of 5 results Feb 12, 2009 May 13, 2010
Manganese 1032 Inorganic Chemical 5 of 5 results Feb 12, 2009 May 13, 2010
Potassium 1042 Inorganic Chemical 5 of 5 results Feb 12, 2009 May 13, 2010
Residue, Total, Filterable 1057 Water Quality 5 of 5 results Feb 12, 2009 May 13, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 5 of 5 results Feb 12, 2009 May 13, 2010
Carbon Dioxide 1901 Water Quality 5 of 5 results Feb 12, 2009 May 13, 2010
Hardness, Total (As Caco3) 1915 Water Quality 5 of 5 results Feb 12, 2009 May 13, 2010
Calculated Sodium NACA Water Quality 5 of 5 results Feb 12, 2009 May 13, 2010
Bromodichloromethane 2943 Organic Chemical 4 of 13 results Feb 27, 2024 Nov 25, 2024
Sulfate 1055 Inorganic Chemical 4 of 8 results Feb 12, 2009 May 13, 2010
Color 1905 Water Quality 3 of 3 results Feb 12, 2009 Mar 30, 2022
PH, Field Result PHFD Water Quality 3 of 3 results May 13, 2010 May 13, 2010
PH 1925 Water Quality 2 of 2 results Feb 12, 2009 Feb 12, 2009
Cadmium 1015 Inorganic Chemical 2 of 15 results Apr 26, 2005 Apr 10, 2006
Selenium 1045 Inorganic Chemical 2 of 15 results Mar 29, 2004 Apr 26, 2005
Conductivity @ 25 C Umhos/CM 1064 Water Quality 1 of 1 result Mar 30, 2022 Mar 30, 2022
Xylenes, Total 2955 Organic Chemical 1 of 18 results Aug 3, 2021 Aug 3, 2021

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 221–230 of 343 samples, newest first — collected September 17, 2008 to February 12, 2009. The summary above covers all 343.

50 results from the 10 samples listed here: 42 detected, 8 not detected. Across the whole record it is 510 of 1,365. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for Charleston Utilities, every result from 221 to 230 of 343 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Feb 12, 2009
Sampling point
WL002 Well W002
Sample type
Routine
Lab sample
090213-002PC
Laboratory
MSDH Lab
1.3 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 Feb 12, 2009, sampling point WL002 Calcium 1016 EPA method 200.8 Not recorded
74.7 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 Feb 12, 2009, sampling point WL002 Chloride 1017 EPA method 300.0 Not recorded
0.391 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 Feb 12, 2009, sampling point WL002 Fluoride 1025 EPA method 380-75WE Not recorded
0.17 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 Feb 12, 2009, sampling point WL002 Iron 1028 EPA method 200.8 Not recorded
0.299 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 Feb 12, 2009, sampling point WL002 Magnesium 1031 EPA method 200.8 Not recorded
0.008 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 Feb 12, 2009, sampling point WL002 Manganese 1032 EPA method 200.8 Not recorded
0.99 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 Feb 12, 2009, sampling point WL002 Potassium 1042 EPA method 200.8 Not recorded
177 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 Feb 12, 2009, sampling point WL002 Sodium 1052 EPA method 200.8 Not recorded
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Feb 12, 2009, sampling point WL002 Sulfate 1055 EPA method 300.0 Not recorded
459 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 Feb 12, 2009, sampling point WL002 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0" — 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 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 Feb 12, 2009, sampling point WL002 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
4 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 Feb 12, 2009, sampling point WL002 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
25 units 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 Feb 12, 2009, sampling point WL002 Color 1905 EPA method 2120B Not recorded
5 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 Feb 12, 2009, sampling point WL002 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
8.3 ph 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 Feb 12, 2009, sampling point WL002 PH 1925 EPA method 150.1 Not recorded
335 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 Feb 12, 2009, sampling point WL002 Alkalinity, Total 1927 EPA method 2320B Not recorded
202 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 Feb 12, 2009, sampling point WL002 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
Collected
Feb 12, 2009
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
090213-001PC
Laboratory
MSDH Lab
2.85 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 Feb 12, 2009, sampling point WL001 Calcium 1016 EPA method 200.8 Not recorded
6.84 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 Feb 12, 2009, sampling point WL001 Chloride 1017 EPA method 300.0 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 12, 2009, sampling point WL001 Fluoride 1025 EPA method 380-75WE Not recorded
1.19 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 Feb 12, 2009, sampling point WL001 Iron 1028 EPA method 200.8 Not recorded
0.789 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 Feb 12, 2009, sampling point WL001 Magnesium 1031 EPA method 200.8 Not recorded
0.071 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 Feb 12, 2009, sampling point WL001 Manganese 1032 EPA method 200.8 Not recorded
2.7 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 Feb 12, 2009, sampling point WL001 Potassium 1042 EPA method 200.8 Not recorded
60.2 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 Feb 12, 2009, sampling point WL001 Sodium 1052 EPA method 200.8 Not recorded
3.65 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 Feb 12, 2009, sampling point WL001 Sulfate 1055 EPA method 300.0 Not recorded
162 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 Feb 12, 2009, sampling point WL001 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0" — 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 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 Feb 12, 2009, sampling point WL001 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
5 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 Feb 12, 2009, sampling point WL001 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
30 units 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 Feb 12, 2009, sampling point WL001 Color 1905 EPA method 2120B Not recorded
10.5 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 Feb 12, 2009, sampling point WL001 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
7.8 ph 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 Feb 12, 2009, sampling point WL001 PH 1925 EPA method 150.1 Not recorded
139 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 Feb 12, 2009, sampling point WL001 Alkalinity, Total 1927 EPA method 2320B Not recorded
62.9 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 Feb 12, 2009, sampling point WL001 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
Collected
Sep 25, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-042PB
Laboratory
MSDH Lab
0.3198 mg/l , sample collected Sep 25, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 25, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-041PB
Laboratory
MSDH Lab
0.147 mg/l , sample collected Sep 25, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 17, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-063PB
Laboratory
MSDH Lab
0.0451 mg/l , sample collected Sep 17, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
0.0051 mg/l , sample collected Sep 17, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 17, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-062PB
Laboratory
MSDH Lab
0.0178 mg/l , sample collected Sep 17, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 17, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-061PB
Laboratory
MSDH Lab
0.007 mg/l , sample collected Sep 17, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 17, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-060PB
Laboratory
MSDH Lab
0.3143 mg/l , sample collected Sep 17, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
0.0015 mg/l , sample collected Sep 17, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 17, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-059PB
Laboratory
MSDH Lab
0.0641 mg/l , sample collected Sep 17, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 17, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080926-057PB
Laboratory
MSDH Lab
0.0676 mg/l , sample collected Sep 17, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2008

Routine (10).