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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 91–100 of 164 samples, newest first — collected July 22, 2014 to July 25, 2014. The summary above covers all 164.

20 results from the 10 samples listed here: 13 detected, 7 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 91 to 100 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
Jul 25, 2014 06:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-120PB
Laboratory
MSDH Lab
0.0694 mg/l , sample collected Jul 25, 2014 06:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0005 mg/l , sample collected Jul 25, 2014 06:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 05:42
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-124PB
Laboratory
MSDH Lab
0.0047 mg/l , sample collected Jul 23, 2014 05:42, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 23, 2014 05:42, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 04:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-123PB
Laboratory
MSDH Lab
0.0326 mg/l , sample collected Jul 23, 2014 04:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 23, 2014 04:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 04:10
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-122PB
Laboratory
MSDH Lab
0.0085 mg/l , sample collected Jul 23, 2014 04:10, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 23, 2014 04:10, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 06:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-119PB
Laboratory
MSDH Lab
0.0086 mg/l , sample collected Jul 23, 2014 06:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 23, 2014 06:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-118PB
Laboratory
MSDH Lab
0.0012 mg/l , sample collected Jul 23, 2014 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 23, 2014 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 05:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-117PB
Laboratory
MSDH Lab
0.0042 mg/l , sample collected Jul 23, 2014 05:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 23, 2014 05:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 06:31
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-116PB
Laboratory
MSDH Lab
0.0152 mg/l , sample collected Jul 23, 2014 06:31, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0016 mg/l , sample collected Jul 23, 2014 06:31, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 23, 2014 07:45
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-115PB
Laboratory
MSDH Lab
0.0089 mg/l , sample collected Jul 23, 2014 07:45, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
0.0007 mg/l , sample collected Jul 23, 2014 07:45, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Collected
Jul 22, 2014 10:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
140725-121PB
Laboratory
MSDH Lab
0.0058 mg/l , sample collected Jul 22, 2014 10:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 22, 2014 10:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2012 – Dec 31, 2014

Routine (10).