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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

MS0300110 , Rouses

34 of the 75 analytes this system has been tested for have been detected at least once, across 108 samples on record.

The other 41 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 108 samples on record, detections range from September 22, 2003 to February 24, 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 Rouses, 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 35 of 35 results Sep 23, 2004 Jul 12, 2023
Lead 1030 Inorganic Chemical 29 of 35 results Sep 23, 2004 Jun 24, 2020
Barium 1010 Inorganic Chemical 10 of 10 results Sep 22, 2003 Feb 24, 2025
Fluoride 1025 Inorganic Chemical 10 of 11 results Sep 22, 2003 Feb 24, 2025
TTHM 2950 Organic Chemical 8 of 8 results Jun 16, 2004 Feb 12, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 6 of 8 results Sep 26, 2007 Feb 12, 2025
Arsenic 1005 Inorganic Chemical 6 of 10 results Feb 23, 2004 Apr 8, 2015
Chromium 1020 Inorganic Chemical 5 of 10 results Feb 23, 2004 May 18, 2022
Chloroform 2941 Organic Chemical 5 of 5 results Aug 9, 2007 Aug 9, 2018
Bromodichloromethane 2943 Organic Chemical 4 of 5 results Aug 9, 2007 Jun 22, 2015
Dichloroacetic Acid 2451 Organic Chemical 3 of 4 results Sep 25, 2008 Jun 22, 2015
Trichloroacetic Acid 2452 Organic Chemical 3 of 4 results Sep 25, 2008 Jun 22, 2015
Sulfate 1055 Inorganic Chemical 3 of 3 results Sep 22, 2003 Dec 2, 2008
Sodium 1052 Inorganic Chemical 2 of 2 results Dec 2, 2008 Mar 8, 2021
Dibromochloromethane 2944 Organic Chemical 2 of 5 results Aug 9, 2007 Jun 20, 2013
Gross Alpha Particle Activity 4109 Radionuclide 2 of 4 results Jun 26, 2012 Sep 12, 2012
Nickel 1036 Inorganic Chemical 2 of 10 results Feb 15, 2006 Jan 14, 2009
Selenium 1045 Inorganic Chemical 2 of 10 results Feb 23, 2004 Mar 16, 2005
Nitrite 1041 Inorganic Chemical 1 of 22 results Feb 20, 2018 Feb 20, 2018
Calcium 1016 Inorganic Chemical 1 of 1 result Dec 2, 2008 Dec 2, 2008
Chloride 1017 Inorganic Chemical 1 of 1 result Dec 2, 2008 Dec 2, 2008
Manganese 1032 Inorganic Chemical 1 of 1 result Dec 2, 2008 Dec 2, 2008
Potassium 1042 Inorganic Chemical 1 of 1 result Dec 2, 2008 Dec 2, 2008
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Carbon Dioxide 1901 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Color 1905 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
PH 1925 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Alkalinity, Total 1927 Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Calculated Sodium NACA Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
PH, Field Result PHFD Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Temperature, Field Result TEMP Water Quality 1 of 1 result Dec 2, 2008 Dec 2, 2008
Cadmium 1015 Inorganic Chemical 1 of 10 results Mar 16, 2005 Mar 16, 2005

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 61–70 of 108 samples, newest first — collected September 14, 2009 to December 5, 2011. The summary above covers all 108.

29 results from the 10 samples listed here: 9 detected, 20 not detected. Across the whole record it is 153 of 519. 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 Rouses, every result from 61 to 70 of 108 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
Dec 5, 2011 12:15
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
291490010
Laboratory
Gel Laboratories
Not detected below 2.2 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 12:15, sampling point TF102 Gross Alpha, Excl. Radon & U 4000 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.067 ug/l Minimum Reporting Level , sample collected Dec 5, 2011 12:15, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.775 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 12:15, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.635 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 12:15, sampling point TF102 Radium-226 4020 EPA method 903.1 Oct 1, 2011 – Dec 31, 2011
Not detected below 0.775 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 12:15, sampling point TF102 Radium-228 4030 EPA method 904.0 Oct 1, 2011 – Dec 31, 2011
Not detected below 2.2 pci/l Minimum Reporting Level , sample collected Dec 5, 2011 12:15, sampling point TF102 Gross Alpha Particle Activity 4109 EPA method 900.0 Oct 1, 2011 – Dec 31, 2011
Collected
Sep 28, 2011 13:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
286904019
Laboratory
Gel Laboratories
Not detected below 2.1 pci/l Minimum Reporting Level , sample collected Sep 28, 2011 13:00, sampling point TF102 Gross Alpha, Excl. Radon & U 4000 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.067 ug/l Minimum Reporting Level , sample collected Sep 28, 2011 13:00, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.947 pci/l Minimum Reporting Level , sample collected Sep 28, 2011 13:00, sampling point TF102 Combined Radium (-226 & -228) 4010 Not recorded
Not detected below 0.477 pci/l Minimum Reporting Level , sample collected Sep 28, 2011 13:00, sampling point TF102 Radium-226 4020 EPA method 903.1 Jul 1, 2011 – Sep 30, 2011
Not detected below 0.947 pci/l Minimum Reporting Level , sample collected Sep 28, 2011 13:00, sampling point TF102 Radium-228 4030 EPA method 904.0 Jul 1, 2011 – Sep 30, 2011
Not detected below 2.1 pci/l Minimum Reporting Level , sample collected Sep 28, 2011 13:00, sampling point TF102 Gross Alpha Particle Activity 4109 EPA method 900.0 Jul 1, 2011 – Sep 30, 2011
Collected
Jun 22, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-010PB
Laboratory
MSDH Lab
0.0332 mg/l , sample collected Jun 22, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0006 mg/l , sample collected Jun 22, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 22, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-009PB
Laboratory
MSDH Lab
0.0327 mg/l , sample collected Jun 22, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0012 mg/l , sample collected Jun 22, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 22, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-008PB
Laboratory
MSDH Lab
0.0317 mg/l , sample collected Jun 22, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0009 mg/l , sample collected Jun 22, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 22, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-006PB
Laboratory
MSDH Lab
0.0106 mg/l , sample collected Jun 22, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0009 mg/l , sample collected Jun 22, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 20, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-007PB
Laboratory
MSDH Lab
0.0035 mg/l , sample collected Jun 20, 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 Jun 20, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Feb 16, 2011
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
110217-037NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 16, 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 Feb 16, 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 Feb 16, 2011, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Collected
Jul 7, 2010
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
100708-063NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jul 7, 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 Jul 7, 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 Jul 7, 2010, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Collected
Sep 14, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
090915-014CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 14, 2009, sampling point TF102 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010

Routine (10).