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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

MS0480019 , Cason Water Association

18 of the 56 analytes this system has been tested for have been detected at least once, across 487 samples on record.

The other 38 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 October 8, 2003 to April 29, 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.

Every analyte ever detected for Cason 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 320 of 320 results Sep 6, 2007 Nov 6, 2024
Lead 1030 Inorganic Chemical 84 of 320 results Sep 6, 2007 Nov 5, 2024
TTHM 2950 Organic Chemical 32 of 32 results Jul 12, 2004 Apr 29, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 24 of 31 results Jun 17, 2010 Aug 25, 2025
Barium 1010 Inorganic Chemical 13 of 13 results Oct 8, 2003 May 8, 2019
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 15, 2012 Oct 10, 2012
Chromium 1020 Inorganic Chemical 9 of 13 results Mar 8, 2004 May 8, 2019
Chloroform 2941 Organic Chemical 8 of 10 results Aug 14, 2013 Apr 29, 2026
Nickel 1036 Inorganic Chemical 7 of 13 results Mar 8, 2004 May 8, 2019
Bromodichloromethane 2943 Organic Chemical 6 of 10 results Feb 20, 2024 Apr 29, 2026
Dibromochloromethane 2944 Organic Chemical 6 of 10 results Feb 20, 2024 Apr 29, 2026
Dichloroacetic Acid 2451 Organic Chemical 5 of 11 results Feb 20, 2024 Aug 25, 2025
Trichloroacetic Acid 2452 Organic Chemical 5 of 11 results Feb 20, 2024 Aug 25, 2025
Fluoride 1025 Inorganic Chemical 5 of 13 results Oct 8, 2003 May 8, 2019
Sodium 1052 Inorganic Chemical 4 of 4 results Sep 16, 2019 Mar 2, 2022
Cadmium 1015 Inorganic Chemical 3 of 13 results Mar 8, 2004 Apr 4, 2005
Selenium 1045 Inorganic Chemical 2 of 13 results Apr 4, 2005 Apr 4, 2005
Sulfate 1055 Inorganic Chemical 2 of 2 results Oct 8, 2003 Mar 8, 2004

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 311–320 of 487 samples, newest first — collected April 26, 2016 to September 10, 2018. The summary above covers all 487.

52 results from the 10 samples listed here: 4 detected, 48 not detected. Across the whole record it is 545 of 1,464. 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 Cason Water Association, every result from 311 to 320 of 487 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 10, 2018 04:24
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180913-177PB
Laboratory
MSDH Lab
0.1076 mg/l , sample collected Sep 10, 2018 04:24, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0053 mg/l , sample collected Sep 10, 2018 04:24, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Mar 5, 2018 14:00
Sampling point
TF080
Sample type
Routine
Lab sample
180306-056NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 5, 2018 14:00, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 5, 2018 14:00, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 5, 2018 14:00, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Mar 5, 2018 14:05
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
180306-053NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 5, 2018 14:05, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 5, 2018 14:05, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 5, 2018 14:05, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2018 – Dec 31, 2018
Collected
Apr 12, 2017 01:30
Sampling point
TF080
Sample type
Routine
Lab sample
170413-001VO
Laboratory
MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Dichloromethane 2964 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Benzene 2990 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Toluene 2991 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Apr 12, 2017 01:30, sampling point TF080 Styrene 2996 EPA method 524.2 Jan 1, 2012 – Dec 31, 2017
Collected
Mar 13, 2017 02:00
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
170314-022NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2017 02:00, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2017 02:00, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2017 02:00, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Mar 13, 2017 01:30
Sampling point
TF080
Sample type
Routine
Lab sample
170314-021NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 13, 2017 01:30, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 13, 2017 01:30, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 13, 2017 01:30, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2017 – Dec 31, 2017
Collected
Jul 6, 2016 01:31
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
160707-004HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 6, 2016 01:31, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2016 01:31, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2016 01:31, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2016 01:31, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Jul 6, 2016 01:31, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Jul 6, 2016 01:31, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2014 – Dec 31, 2016
Collected
Jul 6, 2016 01:33
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
160707-004TH
Laboratory
MSDH Lab
1.07 ug/l , sample collected Jul 6, 2016 01:33, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2016 01:33, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2016 01:33, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 6, 2016 01:33, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
1.07 ug/l , sample collected Jul 6, 2016 01:33, sampling point MRT000 TTHM 2950 Jan 1, 2014 – Dec 31, 2016
Collected
Apr 26, 2016 14:00
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
160427-111NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 14:00, sampling point TF081 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 14:00, sampling point TF081 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 14:00, sampling point TF081 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Collected
Apr 26, 2016 14:24
Sampling point
TF080
Sample type
Routine
Lab sample
160427-102NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 14:24, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 14:24, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 26, 2016 14:24, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2016 – Dec 31, 2016

Routine (10).