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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

MS0350003 , NW Kemper W/A #1-Preston

18 of the 57 analytes this system has been tested for have been detected at least once, across 164 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 164 samples on record, detections range from September 24, 2003 to July 30, 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 NW Kemper W/A #1-Preston, 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 70 of 70 results Aug 2, 2007 Jul 30, 2026
Lead 1030 Inorganic Chemical 23 of 70 results Aug 2, 2007 Jul 30, 2026
Nitrate-Nitrite 1038 Inorganic Chemical 21 of 22 results May 17, 2004 Mar 5, 2025
Nitrate 1040 Inorganic Chemical 21 of 22 results May 17, 2004 Mar 5, 2025
Barium 1010 Inorganic Chemical 10 of 10 results Sep 24, 2003 Feb 26, 2025
TTHM 2950 Organic Chemical 7 of 21 results Aug 16, 2007 Dec 2, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 20 results Aug 16, 2007 Jun 14, 2023
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 14, 2011 Jul 18, 2012
Chloroform 2941 Organic Chemical 4 of 16 results Aug 16, 2007 Dec 2, 2025
Bromodichloromethane 2943 Organic Chemical 4 of 16 results Aug 16, 2007 Dec 2, 2025
Dibromochloromethane 2944 Organic Chemical 4 of 16 results Aug 16, 2007 Dec 2, 2025
Bromoform 2942 Organic Chemical 3 of 16 results Aug 21, 2018 Dec 2, 2025
Sodium 1052 Inorganic Chemical 3 of 3 results Sep 18, 2019 Feb 5, 2025
Nickel 1036 Inorganic Chemical 2 of 10 results Aug 31, 2022 Feb 26, 2025
Monobromoacetic Acid 2453 Organic Chemical 2 of 14 results Aug 7, 2019 Sep 15, 2020
Chromium 1020 Inorganic Chemical 1 of 10 results Feb 26, 2025 Feb 26, 2025
Monochloroacetic Acid 2450 Organic Chemical 1 of 14 results Aug 21, 2018 Aug 21, 2018
Dichloroacetic Acid 2451 Organic Chemical 1 of 14 results Aug 21, 2018 Aug 21, 2018

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 141–150 of 164 samples, newest first — collected February 13, 2006 to August 2, 2007. The summary above covers all 164.

31 results from the 10 samples listed here: 15 detected, 16 not detected. Across the whole record it is 189 of 678. 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 NW Kemper W/A #1-Preston, every result from 141 to 150 of 164 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
Aug 2, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070803-274PB
Laboratory
MSDH Lab
0.0037 mg/l , sample collected Aug 2, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0008 mg/l , sample collected Aug 2, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 2, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070803-282PB
Laboratory
MSDH Lab
0.0024 mg/l , sample collected Aug 2, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 2, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 2, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070803-429PB
Laboratory
MSDH Lab
0.0018 mg/l , sample collected Aug 2, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 2, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 2, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070803-284PB
Laboratory
MSDH Lab
0.0096 mg/l , sample collected Aug 2, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0007 mg/l , sample collected Aug 2, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 2, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070803-273PB
Laboratory
MSDH Lab
0.0091 mg/l , sample collected Aug 2, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0027 mg/l , sample collected Aug 2, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 2, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070803-286PB
Laboratory
MSDH Lab
0.0027 mg/l , sample collected Aug 2, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0009 mg/l , sample collected Aug 2, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
May 2, 2007
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
070503-075NI
Laboratory
MSDH Lab
0.83 mg/l , sample collected May 2, 2007, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
0.83 mg/l , sample collected May 2, 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 2, 2007, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Collected
Jul 10, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060711-089NI
Laboratory
MSDH Lab
0.9 mg/l , sample collected Jul 10, 2006, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
0.9 mg/l , sample collected Jul 10, 2006, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 10, 2006, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Collected
Feb 13, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060214-126IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.00631 mg/l , sample collected Feb 13, 2006, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Uranium-238 4009 Not recorded
Collected
Feb 13, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060214-074CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Feb 13, 2006, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007

Routine (10).