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 161–164 of 164 samples, newest first — collected September 24, 2003 to February 23, 2004. The summary above covers all 164.

46 results from the 4 samples listed here: 2 detected, 44 not detected. 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 161 to 164 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 Feb 23, 2004 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample 040224-060IN Laboratory MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Arsenic 1005 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
0.01 mg/l , sample collected Feb 23, 2004, sampling point TF080	Barium 1010 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Cadmium 1015 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Chromium 1020 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Fluoride 1025 EPA method 300.0	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Mercury 1035 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Selenium 1045 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Sulfate 1055 EPA method 300.0	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Antimony, Total 1074 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Beryllium, Total 1075 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Feb 23, 2004, sampling point TF080	Thallium, Total 1085 EPA method 200.8	Jan 1, 2002 – Dec 31, 2004
Collected Feb 3, 2004 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample 040204-035VO Laboratory MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	1,2,4-Trichlorobenzene 2378	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Cis-1,2-Dichloroethylene 2380	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Xylenes, Total 2955	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Dichloromethane 2964	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	O-Dichlorobenzene 2968	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	P-Dichlorobenzene 2969	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Vinyl Chloride 2976	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	1,1-Dichloroethylene 2977	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Trans-1,2-Dichloroethylene 2979	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	1,2-Dichloroethane 2980	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	1,1,1-Trichloroethane 2981	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Carbon Tetrachloride 2982	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	1,2-Dichloropropane 2983	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Trichloroethylene 2984	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	1,1,2-Trichloroethane 2985	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Tetrachloroethylene 2987	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Chlorobenzene 2989	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Benzene 2990	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Toluene 2991	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Ethylbenzene 2992	Jan 1, 2004 – Mar 31, 2004
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Feb 3, 2004, sampling point TF080	Styrene 2996	Jan 1, 2004 – Mar 31, 2004
Collected Sep 24, 2003 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample 030925-059IN Laboratory MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Arsenic 1005 EPA method 200.8	Not recorded
0.01 mg/l , sample collected Sep 24, 2003, sampling point TF080	Barium 1010 EPA method 200.8	Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Cadmium 1015 EPA method 200.8	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Chromium 1020 EPA method 200.8	Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Fluoride 1025 EPA method 300.0	Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Mercury 1035 EPA method 200.8	Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Nickel 1036 EPA method 200.8	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Selenium 1045 EPA method 200.8	Not recorded
Not detected below 2.5 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Sulfate 1055 EPA method 300.0	Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Antimony, Total 1074 EPA method 200.8	Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Beryllium, Total 1075 EPA method 200.8	Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Thallium, Total 1085 EPA method 200.8	Not recorded
Collected Sep 24, 2003 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample 030925-042CN Laboratory MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Sep 24, 2003, sampling point TF080	Cyanide 1024 EPA method QC10204001X	Jan 1, 2002 – Dec 31, 2004

Collected
Feb 23, 2004

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
040224-060IN

Laboratory
MSDH Lab
- Arsenic 1005 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Barium 1010 EPA method 200.8
  
  Result
  0.01 mg/l
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0001 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Chromium 1020 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Fluoride 1025 EPA method 300.0
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Nickel 1036 EPA method 200.8
  
  Result
  Not detected below 0.005 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Selenium 1045 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Sulfate 1055 EPA method 300.0
  
  Result
  Not detected below 2.5 mg/l Minimum Reporting Level
  
  Monitoring period
  Not recorded
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0003 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
  
  Monitoring period
  Jan 1, 2002 – Dec 31, 2004
Collected
Feb 3, 2004

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
040204-035VO

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2004 – Mar 31, 2004
- 1,2,4-Trichlorobenzene 2378
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Cis-1,2-Dichloroethylene 2380
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Xylenes, Total 2955
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Dichloromethane 2964
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- O-Dichlorobenzene 2968
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- P-Dichlorobenzene 2969
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Vinyl Chloride 2976
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,1-Dichloroethylene 2977
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Trans-1,2-Dichloroethylene 2979
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,2-Dichloroethane 2980
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,1,1-Trichloroethane 2981
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Carbon Tetrachloride 2982
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,2-Dichloropropane 2983
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Trichloroethylene 2984
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- 1,1,2-Trichloroethane 2985
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Tetrachloroethylene 2987
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Chlorobenzene 2989
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Benzene 2990
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Toluene 2991
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Ethylbenzene 2992
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
- Styrene 2996
  
  Result
  Not detected below 0.0005 mg/l Method Detection Limit
Collected
Sep 24, 2003

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
030925-059IN

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Arsenic 1005 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
- Barium 1010 EPA method 200.8
  
  Result
  0.01 mg/l
- Cadmium 1015 EPA method 200.8
  
  Result
  Not detected below 0.0001 mg/l Minimum Reporting Level
- Chromium 1020 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
- Fluoride 1025 EPA method 300.0
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Mercury 1035 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
- Nickel 1036 EPA method 200.8
  
  Result
  Not detected below 0.005 mg/l Minimum Reporting Level
- Selenium 1045 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
- Sulfate 1055 EPA method 300.0
  
  Result
  Not detected below 2.5 mg/l Minimum Reporting Level
- Antimony, Total 1074 EPA method 200.8
  
  Result
  Not detected below 0.001 mg/l Minimum Reporting Level
- Beryllium, Total 1075 EPA method 200.8
  
  Result
  Not detected below 0.0003 mg/l Minimum Reporting Level
- Thallium, Total 1085 EPA method 200.8
  
  Result
  Not detected below 0.0005 mg/l Minimum Reporting Level
Collected
Sep 24, 2003

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
030925-042CN

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2002 – Dec 31, 2004
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.01 mg/l Minimum Reporting Level

Routine (4).