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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

MS0580023 , Houlka-Washington Ext

21 of the 57 analytes this system has been tested for have been detected at least once, across 214 samples on record.

The other 36 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 214 samples on record, detections range from October 15, 2003 to April 2, 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 Houlka-Washington Ext, 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 60 of 60 results Aug 7, 2007 Sep 15, 2023
Barium 1010 Inorganic Chemical 20 of 20 results Oct 15, 2003 Mar 19, 2025
Fluoride 1025 Inorganic Chemical 20 of 20 results Oct 15, 2003 Mar 19, 2025
Lead 1030 Inorganic Chemical 19 of 60 results Aug 7, 2007 Sep 15, 2023
Chromium 1020 Inorganic Chemical 12 of 20 results Oct 15, 2003 May 8, 2013
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Dec 12, 2011 Jul 17, 2012
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 22, 2019 Mar 3, 2025
Selenium 1045 Inorganic Chemical 6 of 20 results Mar 15, 2004 Mar 29, 2006
Nickel 1036 Inorganic Chemical 5 of 20 results Mar 15, 2004 Nov 4, 2019
Nitrate-Nitrite 1038 Inorganic Chemical 4 of 46 results May 4, 2015 Apr 2, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 4 of 11 results Sep 4, 2007 Dec 7, 2016
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 15, 2003 Mar 15, 2004
Nitrite 1041 Inorganic Chemical 3 of 46 results Mar 9, 2022 Apr 2, 2025
Arsenic 1005 Inorganic Chemical 3 of 20 results Mar 15, 2004 Oct 11, 2022
Cyanide 1024 Inorganic Chemical 3 of 22 results Feb 22, 2010 Feb 23, 2016
Nitrate 1040 Inorganic Chemical 2 of 46 results May 4, 2015 Dec 11, 2019
Monochloroacetic Acid 2450 Organic Chemical 2 of 5 results Dec 7, 2016 Dec 7, 2016
TTHM 2950 Organic Chemical 2 of 13 results Sep 4, 2007 Jun 28, 2010
Cadmium 1015 Inorganic Chemical 2 of 20 results Apr 11, 2005 Apr 11, 2005
Uranium-238 4009 Radionuclide 1 of 2 results Mar 29, 2006 Mar 29, 2006
Antimony, Total 1074 Inorganic Chemical 1 of 20 results Mar 15, 2004 Mar 15, 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 211–214 of 214 samples, newest first — collected October 15, 2003 to October 15, 2003. The summary above covers all 214.

26 results from the 4 samples listed here: 8 detected, 18 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 Houlka-Washington Ext, every result from 211 to 214 of 214 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
Oct 15, 2003
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
031016-096IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Arsenic 1005 EPA method 200.8 Not recorded
0.016 mg/l , sample collected Oct 15, 2003, sampling point TF102 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Cadmium 1015 EPA method 200.8 Not recorded
0.002 mg/l , sample collected Oct 15, 2003, sampling point TF102 Chromium 1020 EPA method 200.8 Not recorded
0.974 mg/l , sample collected Oct 15, 2003, sampling point TF102 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Selenium 1045 EPA method 200.8 Not recorded
177 mg/l , sample collected Oct 15, 2003, sampling point TF102 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Oct 15, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031016-095IN
Laboratory
MSDH Lab
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Arsenic 1005 EPA method 200.8 Not recorded
0.016 mg/l , sample collected Oct 15, 2003, sampling point TF101 Barium 1010 EPA method 200.8 Not recorded
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Cadmium 1015 EPA method 200.8 Not recorded
0.002 mg/l , sample collected Oct 15, 2003, sampling point TF101 Chromium 1020 EPA method 200.8 Not recorded
1.02 mg/l , sample collected Oct 15, 2003, sampling point TF101 Fluoride 1025 EPA method 300.0 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Mercury 1035 EPA method 200.8 Not recorded
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Selenium 1045 EPA method 200.8 Not recorded
182 mg/l , sample collected Oct 15, 2003, sampling point TF101 Sulfate 1055 EPA method 300.0 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Not recorded
Not detected below 0.0003 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Not recorded
Collected
Oct 15, 2003
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
031016-070CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004
Collected
Oct 15, 2003
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
031016-029CN
Laboratory
MSDH Lab
Not detected below 0.01 mg/l Minimum Reporting Level , sample collected Oct 15, 2003, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2002 – Dec 31, 2004

Routine (4).