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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

MS0730004 , Keownville Rural Water Assn

24 of the 57 analytes this system has been tested for have been detected at least once, across 399 samples on record.

The other 33 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 399 samples on record, detections range from October 29, 2003 to July 15, 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 Keownville Rural Water Assn, 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 97 of 97 results Aug 11, 2004 Aug 27, 2024
Lead 1030 Inorganic Chemical 74 of 97 results Aug 11, 2004 Aug 27, 2024
Barium 1010 Inorganic Chemical 41 of 41 results Oct 29, 2003 Apr 8, 2025
Fluoride 1025 Inorganic Chemical 41 of 41 results Oct 29, 2003 Apr 8, 2025
Chromium 1020 Inorganic Chemical 29 of 41 results Oct 29, 2003 Apr 8, 2025
Nickel 1036 Inorganic Chemical 25 of 41 results Mar 29, 2004 Apr 8, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 20 results Mar 22, 2012 Oct 10, 2012
TTHM 2950 Organic Chemical 10 of 20 results Sep 18, 2007 Jul 15, 2025
Selenium 1045 Inorganic Chemical 9 of 41 results Apr 26, 2005 Mar 3, 2010
Sodium 1052 Inorganic Chemical 8 of 8 results Sep 23, 2019 Mar 29, 2023
Sulfate 1055 Inorganic Chemical 8 of 8 results Oct 29, 2003 Mar 29, 2004
Arsenic 1005 Inorganic Chemical 7 of 41 results Dec 4, 2006 Feb 6, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 20 results Jul 20, 2010 Jul 15, 2025
Bromoform 2942 Organic Chemical 5 of 14 results Jul 20, 2010 Jun 2, 2025
Nitrite 1041 Inorganic Chemical 5 of 90 results Oct 3, 2005 Nov 13, 2018
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 20 results Mar 22, 2012 Oct 10, 2012
Radium-226 4020 Radionuclide 5 of 20 results Mar 22, 2012 Oct 10, 2012
Nitrate-Nitrite 1038 Inorganic Chemical 4 of 90 results Oct 3, 2005 Mar 14, 2023
Cadmium 1015 Inorganic Chemical 4 of 41 results Apr 26, 2005 Apr 26, 2005
Dibromochloromethane 2944 Organic Chemical 2 of 14 results Dec 5, 2024 Feb 10, 2025
Nitrate 1040 Inorganic Chemical 1 of 90 results Mar 14, 2023 Mar 14, 2023
Monochloroacetic Acid 2450 Organic Chemical 1 of 13 results Oct 30, 2013 Oct 30, 2013
Cyanide 1024 Inorganic Chemical 1 of 41 results May 9, 2011 May 9, 2011
Toluene 2991 Organic Chemical 1 of 51 results Jun 9, 2004 Jun 9, 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 121–130 of 399 samples, newest first — collected September 10, 2018 to September 18, 2018. The summary above covers all 399.

47 results from the 10 samples listed here: 23 detected, 24 not detected. Across the whole record it is 403 of 2,306. 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 Keownville Rural Water Assn, every result from 121 to 130 of 399 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 18, 2018 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-149PB
Laboratory
MSDH Lab
0.2266 mg/l , sample collected Sep 18, 2018 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0006 mg/l , sample collected Sep 18, 2018 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 18, 2018 04:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-148PB
Laboratory
MSDH Lab
0.3011 mg/l , sample collected Sep 18, 2018 04:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0005 mg/l , sample collected Sep 18, 2018 04:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 18, 2018 05:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-147PB
Laboratory
MSDH Lab
0.0686 mg/l , sample collected Sep 18, 2018 05:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 18, 2018 05:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 18, 2018 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-146PB
Laboratory
MSDH Lab
0.0753 mg/l , sample collected Sep 18, 2018 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.002 mg/l , sample collected Sep 18, 2018 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 18, 2018 07:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-144PB
Laboratory
MSDH Lab
0.011 mg/l , sample collected Sep 18, 2018 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0005 mg/l , sample collected Sep 18, 2018 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 18, 2018 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-143PB
Laboratory
MSDH Lab
0.0924 mg/l , sample collected Sep 18, 2018 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0011 mg/l , sample collected Sep 18, 2018 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 17, 2018 18:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
180919-145PB
Laboratory
MSDH Lab
0.0864 mg/l , sample collected Sep 17, 2018 18:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 17, 2018 18:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Collected
Sep 10, 2018 12:10
Sampling point
TF103 Treatment Plant T103
Sample type
Routine
Lab sample
180911-031IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0413 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF103 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0016 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF103 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.175 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF103 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF103 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Sep 10, 2018 12:40
Sampling point
TF104 Treatment Plant T104
Sample type
Routine
Lab sample
180911-030IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0418 mg/l , sample collected Sep 10, 2018 12:40, sampling point TF104 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.166 mg/l , sample collected Sep 10, 2018 12:40, sampling point TF104 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0007 mg/l , sample collected Sep 10, 2018 12:40, sampling point TF104 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:40, sampling point TF104 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Sep 10, 2018 12:10
Sampling point
TF105
Sample type
Routine
Lab sample
180911-029IN
Laboratory
MSDH Lab
0.0014 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF105 Arsenic 1005 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.1249 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF105 Barium 1010 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF105 Cadmium 1015 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0018 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF105 Chromium 1020 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.231 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF105 Fluoride 1025 EPA method 300.0 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF105 Mercury 1035 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
0.0011 mg/l , sample collected Sep 10, 2018 12:10, sampling point TF105 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF105 Selenium 1045 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF105 Antimony, Total 1074 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF105 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 10, 2018 12:10, sampling point TF105 Thallium, Total 1085 EPA method 200.8 Jan 1, 2016 – Dec 31, 2018

Routine (10).