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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 141–150 of 214 samples, newest first — collected September 13, 2010 to August 26, 2011. The summary above covers all 214.

23 results from the 10 samples listed here: 7 detected, 16 not detected. Across the whole record it is 189 of 1,040. 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 141 to 150 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
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-020PB
Laboratory
MSDH Lab
0.0284 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-019PB
Laboratory
MSDH Lab
0.0075 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-018PB
Laboratory
MSDH Lab
0.0319 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-017PB
Laboratory
MSDH Lab
0.005 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-016PB
Laboratory
MSDH Lab
0.0277 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-015PB
Laboratory
MSDH Lab
0.0189 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Aug 26, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110830-014PB
Laboratory
MSDH Lab
0.0308 mg/l , sample collected Aug 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Mar 28, 2011
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
110329-050NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2011, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2011, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2011, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Collected
Mar 28, 2011
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
110329-015NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 28, 2011, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 28, 2011, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 28, 2011, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Collected
Sep 13, 2010
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
100914-075NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Sep 13, 2010, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Sep 13, 2010, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Sep 13, 2010, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010

Routine (10).