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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

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.

Every analyte ever detected for Calhoun Water Association, 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 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 221–230 of 297 samples, newest first — collected May 6, 2008 to September 21, 2009. The summary above covers all 297.

63 results from the 10 samples listed here: 6 detected, 57 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.

Chemical and radiological sample results for Calhoun Water Association, every result from 221 to 230 of 297 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
Sep 21, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090922-016HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 21, 2009, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 21, 2009, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 21, 2009, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 21, 2009, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 21, 2009, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 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 Sep 21, 2009, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2008 – Dec 31, 2010
Collected
Sep 21, 2009
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
090922-010CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 21, 2009, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Sep 21, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090922-009CN
Laboratory
MSDH Lab
0.021 mg/l , sample collected Sep 21, 2009, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Apr 20, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090421-084NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Apr 20, 2009
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
090421-081NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF081 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF081 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF081 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jan 12, 2009
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
090113-060IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.057503 mg/l , sample collected Jan 12, 2009, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.000826 mg/l , sample collected Jan 12, 2009, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Jan 12, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090113-059IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.102449 mg/l , sample collected Jan 12, 2009, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.000602 mg/l , sample collected Jan 12, 2009, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 12, 2009, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Jun 9, 2008
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
080610-053NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jun 9, 2008, sampling point TF081 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jun 9, 2008, sampling point TF081 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 9, 2008, sampling point TF081 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Jun 9, 2008
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
080610-052NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jun 9, 2008, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jun 9, 2008, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 9, 2008, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
May 6, 2008
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
080507-011VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Dichloromethane 2964 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Benzene 2990 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Toluene 2991 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected May 6, 2008, sampling point TF081 Styrene 2996 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010

Routine (10).