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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 71–80 of 108 samples, newest first — collected August 13, 2008 to April 22, 2009. The summary above covers all 108.

55 results from the 10 samples listed here: 36 detected, 19 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 71 to 80 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
Apr 22, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
090423-041NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Apr 22, 2009, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Apr 22, 2009, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Apr 22, 2009, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jan 14, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
090115-024IN
Laboratory
MSDH Lab
0.002953 mg/l , sample collected Jan 14, 2009, sampling point TF102 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.012239 mg/l , sample collected Jan 14, 2009, sampling point TF102 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.197 mg/l , sample collected Jan 14, 2009, sampling point TF102 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.000824 mg/l , sample collected Jan 14, 2009, sampling point TF102 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 14, 2009, sampling point TF102 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Dec 2, 2008
Sampling point
WL002 Well W002
Sample type
Routine
Lab sample
081204-001PC
Laboratory
MSDH Lab
0.339 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Calcium 1016 EPA method 200.8 Not recorded
4.36 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Chloride 1017 EPA method 300.0 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 2, 2008, sampling point WL002 Fluoride 1025 EPA method 380-75WE Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 2, 2008, sampling point WL002 Iron 1028 EPA method 200.8 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 2, 2008, sampling point WL002 Magnesium 1031 EPA method 200.8 Not recorded
0.002 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Manganese 1032 EPA method 200.8 Not recorded
0.668 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Potassium 1042 EPA method 200.8 Not recorded
32.7 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Sodium 1052 EPA method 200.8 Not recorded
3.45 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Sulfate 1055 EPA method 300.0 Not recorded
81 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
11 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
25 units The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Color 1905 EPA method 2120B Not recorded
1.2 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
7.08 ph The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 PH 1925 EPA method 150.1 Not recorded
66.1 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Alkalinity, Total 1927 EPA method 2320B Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 2, 2008, sampling point WL002 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
33.7 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
7.6 ph The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 PH, Field Result PHFD EPA method 3500AL-D Not recorded
70 f The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Dec 2, 2008, sampling point WL002 Temperature, Field Result TEMP EPA method VISOB Not recorded
Collected
Sep 25, 2008
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
080926-007TH
Laboratory
MSDH Lab
11 ug/l , sample collected Sep 25, 2008, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
3.84 ug/l , sample collected Sep 25, 2008, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
14.84 ug/l , sample collected Sep 25, 2008, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
Sep 25, 2008
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
080926-007HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.007 mg/l , sample collected Sep 25, 2008, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
0.009 mg/l , sample collected Sep 25, 2008, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 25, 2008, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0.01 mg/l , sample collected Sep 25, 2008, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 14, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080815-045PB
Laboratory
MSDH Lab
0.0346 mg/l , sample collected Aug 14, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0016 mg/l , sample collected Aug 14, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 13, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080815-048PB
Laboratory
MSDH Lab
0.4793 mg/l , sample collected Aug 13, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0013 mg/l , sample collected Aug 13, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 13, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080815-047PB
Laboratory
MSDH Lab
0.0368 mg/l , sample collected Aug 13, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0014 mg/l , sample collected Aug 13, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 13, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080815-046PB
Laboratory
MSDH Lab
0.0118 mg/l , sample collected Aug 13, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0101 mg/l , sample collected Aug 13, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 13, 2008
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
080815-043PB
Laboratory
MSDH Lab
0.0572 mg/l , sample collected Aug 13, 2008, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0028 mg/l , sample collected Aug 13, 2008, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008

Routine (10).