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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

MS0510005 , Duffee Water Association

32 of the 72 analytes this system has been tested for have been detected at least once, across 173 samples on record.

The other 40 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 173 samples on record, detections range from October 13, 2003 to December 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 Duffee Water Association, 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 66 of 66 results Jul 31, 2007 Sep 12, 2023
Lead 1030 Inorganic Chemical 18 of 66 results Jul 31, 2007 Sep 12, 2023
Barium 1010 Inorganic Chemical 10 of 10 results Oct 13, 2003 Dec 2, 2025
TTHM 2950 Organic Chemical 7 of 19 results Jul 19, 2004 Sep 9, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 20 results Jun 16, 2010 Aug 13, 2024
Chromium 1020 Inorganic Chemical 7 of 10 results Oct 13, 2003 May 8, 2019
Dichloroacetic Acid 2451 Organic Chemical 5 of 15 results Jun 10, 2019 Sep 9, 2025
Bromodichloromethane 2943 Organic Chemical 5 of 14 results Sep 24, 2007 Sep 9, 2025
Chloroform 2941 Organic Chemical 4 of 14 results Sep 24, 2007 Sep 9, 2025
Dibromochloromethane 2944 Organic Chemical 3 of 14 results Sep 24, 2007 Sep 9, 2025
Sodium 1052 Inorganic Chemical 3 of 3 results Mar 26, 2010 Feb 25, 2025
Nickel 1036 Inorganic Chemical 3 of 10 results Nov 3, 2008 May 8, 2019
Sulfate 1055 Inorganic Chemical 3 of 3 results Oct 13, 2003 Mar 26, 2010
Fluoride 1025 Inorganic Chemical 2 of 11 results Mar 26, 2010 Dec 2, 2025
Xylenes, Total 2955 Organic Chemical 2 of 22 results Aug 13, 2008 Jul 6, 2011
Trichloroacetic Acid 2452 Organic Chemical 1 of 15 results Jun 10, 2019 Jun 10, 2019
Ethylbenzene 2992 Organic Chemical 1 of 22 results Jul 6, 2011 Jul 6, 2011
Calcium 1016 Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Chloride 1017 Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Iron 1028 Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Magnesium 1031 Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Manganese 1032 Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Potassium 1042 Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
Carbon Dioxide 1901 Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
Color 1905 Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
Alkalinity, Total 1927 Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Mar 26, 2010 Mar 26, 2010
Calculated Sodium NACA Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010
PH, Field Result PHFD Water Quality 1 of 1 result Mar 26, 2010 Mar 26, 2010

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 151–160 of 173 samples, newest first — collected August 22, 2005 to July 31, 2007. The summary above covers all 173.

32 results from the 10 samples listed here: 9 detected, 23 not detected. Across the whole record it is 162 of 1,002. 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 Duffee Water Association, every result from 151 to 160 of 173 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
Jul 31, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070801-344PB
Laboratory
MSDH Lab
0.121 mg/l , sample collected Jul 31, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0006 mg/l , sample collected Jul 31, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 31, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070801-294PB
Laboratory
MSDH Lab
0.0427 mg/l , sample collected Jul 31, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 31, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 31, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070801-295PB
Laboratory
MSDH Lab
0.0347 mg/l , sample collected Jul 31, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0007 mg/l , sample collected Jul 31, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 31, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070801-341PB
Laboratory
MSDH Lab
0.2215 mg/l , sample collected Jul 31, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 31, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Jul 31, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070801-343PB
Laboratory
MSDH Lab
0.2905 mg/l , sample collected Jul 31, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 31, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
May 14, 2007
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
070515-020NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2007 – Dec 31, 2007
Collected
Jul 19, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060720-041NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 19, 2006, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jul 19, 2006, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 19, 2006, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2006 – Dec 31, 2006
Collected
Mar 20, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060321-042CN
Laboratory
MSDH Lab
Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2005 – Dec 31, 2007
Collected
Mar 20, 2006
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
060321-052IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.050759 mg/l , sample collected Mar 20, 2006, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
0.000585 mg/l , sample collected Mar 20, 2006, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2005 – Dec 31, 2007
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 20, 2006, sampling point TF080 Uranium-238 4009 Not recorded
Collected
Aug 22, 2005
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
050823-080NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 22, 2005, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Aug 22, 2005, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 22, 2005, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2005 – Dec 31, 2005

Routine (10).