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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 21–30 of 108 samples, newest first — collected August 9, 2018 to December 3, 2020. The summary above covers all 108.

34 results from the 10 samples listed here: 12 detected, 22 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 21 to 30 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 3, 2020 12:57
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
NI-201204-004
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 3, 2020 12:57, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Dec 3, 2020 12:57, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Dec 3, 2020 12:57, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2020 – Dec 31, 2020
Collected
Jun 24, 2020 15:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200626-068PB
Laboratory
MSDH Lab
0.0253 mg/l , sample collected Jun 24, 2020 15:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.002 mg/l , sample collected Jun 24, 2020 15:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jun 24, 2020 11:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200626-067PB
Laboratory
MSDH Lab
0.0951 mg/l , sample collected Jun 24, 2020 11:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0026 mg/l , sample collected Jun 24, 2020 11:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jun 24, 2020 08:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200626-064PB
Laboratory
MSDH Lab
0.7721 mg/l , sample collected Jun 24, 2020 08:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0028 mg/l , sample collected Jun 24, 2020 08:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jun 23, 2020 20:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200626-066PB
Laboratory
MSDH Lab
0.0074 mg/l , sample collected Jun 23, 2020 20:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0006 mg/l , sample collected Jun 23, 2020 20:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Jun 23, 2020 14:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
200626-065PB
Laboratory
MSDH Lab
0.0955 mg/l , sample collected Jun 23, 2020 14:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
0.0024 mg/l , sample collected Jun 23, 2020 14:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2018 – Dec 31, 2020
Collected
Apr 3, 2019 13:50
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190404-012NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 3, 2019 13:50, sampling point TF102 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 3, 2019 13:50, sampling point TF102 Nitrate 1040 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 3, 2019 13:50, sampling point TF102 Nitrite 1041 EPA method QC10107041C Jan 1, 2019 – Dec 31, 2019
Collected
Mar 27, 2019 07:10
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
190328-029IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.0063 mg/l , sample collected Mar 27, 2019 07:10, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
0.647 mg/l , sample collected Mar 27, 2019 07:10, sampling point TF102 Fluoride 1025 EPA method 300.0 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 27, 2019 07:10, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2017 – Dec 31, 2019
Collected
Aug 22, 2018 14:00
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
180823-035RU
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 22, 2018 14:00, sampling point TF102 Combined Uranium 4006 EPA method 200.8 Jan 1, 2012 – Dec 31, 2020
Collected
Aug 9, 2018 13:10
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
180810-002HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 9, 2018 13:10, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 9, 2018 13:10, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 9, 2018 13:10, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 9, 2018 13:10, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 9, 2018 13:10, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Aug 9, 2018 13:10, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2017 – Dec 31, 2019

Routine (10).