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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

MS0710003 , Dennis Water Association

14 of the 103 analytes this system has been tested for have been detected at least once, across 232 samples on record.

The other 89 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 232 samples on record, detections range from October 29, 2003 to July 29, 2026. 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 Dennis 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 87 of 89 results Sep 18, 2007 Sep 23, 2025
Lead 1030 Inorganic Chemical 28 of 89 results Sep 18, 2007 Sep 23, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 21 of 21 results Jun 14, 2004 Jul 29, 2026
Nitrate 1040 Inorganic Chemical 21 of 21 results Jun 14, 2004 Jul 29, 2026
Barium 1010 Inorganic Chemical 10 of 10 results Oct 29, 2003 Apr 1, 2025
Nickel 1036 Inorganic Chemical 6 of 10 results Oct 29, 2003 Apr 1, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 19 results Sep 10, 2007 Oct 19, 2022
Gross Alpha Particle Activity 4109 Radionuclide 4 of 4 results Sep 19, 2011 Apr 2, 2012
Sodium 1052 Inorganic Chemical 2 of 3 results Sep 25, 2019 Mar 29, 2023
TTHM 2950 Organic Chemical 2 of 18 results Sep 10, 2007 Jul 12, 2010
Chromium 1020 Inorganic Chemical 1 of 10 results Apr 1, 2025 Apr 1, 2025
Monobromoacetic Acid 2453 Organic Chemical 1 of 13 results Oct 28, 2020 Oct 28, 2020
Diquat 2032 Organic Chemical 1 of 8 results Aug 16, 2010 Aug 16, 2010
Selenium 1045 Inorganic Chemical 1 of 10 results Mar 1, 2010 Mar 1, 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 121–130 of 232 samples, newest first — collected June 18, 2013 to August 6, 2013. The summary above covers all 232.

34 results from the 10 samples listed here: 7 detected, 27 not detected. Across the whole record it is 190 of 920. 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 Dennis Water Association, every result from 121 to 130 of 232 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 6, 2013 14:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
201308071107-S15
Laboratory
Eurofins Eaton Analytical
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Dalapon 2031 EPA method 515.4 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Picloram 2040 EPA method 515.4 Not recorded
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Dinoseb 2041 EPA method 515.4 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 2,4-D 2105 EPA method 515.4 Not recorded
Not detected below 0.2 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 2,4,5-TP 2110 EPA method 515.4 Not recorded
Not detected below 0.04 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Pentachlorophenol 2326 EPA method 515.4 Not recorded
Collected
Aug 6, 2013 14:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
201308071107-SO5
Laboratory
Eurofins Eaton Analytical
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Alachlor Esa 2004 EPA method 505 Not recorded
Not detected below 0.01 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 BHC-Gamma 2010 EPA method 505 Not recorded
Not detected below 0.08 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1016 2388 EPA method 505 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1221 2390 EPA method 505 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1232 2392 EPA method 505 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1242 2394 EPA method 505 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1248 2396 EPA method 505 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1254 2398 EPA method 505 Not recorded
Not detected below 0.1 ug/l Minimum Reporting Level , sample collected Aug 6, 2013 14:00, sampling point TF080 Aroclor 1260 2400 EPA method 505 Not recorded
Collected
Jul 22, 2013 02:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
130723-022S1
Laboratory
MSDH Lab
Not detected below 0.02 ug/l Minimum Reporting Level , sample collected Jul 22, 2013 02:00, sampling point TF080 1,2-Dibromo-3-Chloropropane 2931 EPA method 504.1 Not recorded
Not detected below 0.02 ug/l Minimum Reporting Level , sample collected Jul 22, 2013 02:00, sampling point TF080 Ethylene Dibromide 2946 EPA method 504.1 Not recorded
Collected
Jul 8, 2013 02:00
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
130709-017S7
Laboratory
MSDH Lab
Not detected below 0.25 ug/l Minimum Reporting Level , sample collected Jul 8, 2013 02:00, sampling point TF080 Oxamyl 2036 EPA method 531.1 Not recorded
Not detected below 0.25 ug/l Minimum Reporting Level , sample collected Jul 8, 2013 02:00, sampling point TF080 Aldicarb Sulfoxide 2043 EPA method 531.1 Not recorded
Not detected below 0.25 ug/l Minimum Reporting Level , sample collected Jul 8, 2013 02:00, sampling point TF080 Aldicarb Sulfone 2044 EPA method 531.1 Not recorded
Not detected below 0.25 ug/l Minimum Reporting Level , sample collected Jul 8, 2013 02:00, sampling point TF080 Carbofuran 2046 EPA method 531.1 Not recorded
Not detected below 0.25 ug/l Minimum Reporting Level , sample collected Jul 8, 2013 02:00, sampling point TF080 Aldicarb 2047 EPA method 531.1 Not recorded
Collected
Jun 18, 2013 04:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
130619-015PB
Laboratory
MSDH Lab
0.0409 mg/l , sample collected Jun 18, 2013 04:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 18, 2013 04:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 18, 2013 07:00
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
130619-020PB
Laboratory
MSDH Lab
0.0037 mg/l , sample collected Jun 18, 2013 07:00, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 18, 2013 07:00, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 18, 2013 03:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
130619-022PB
Laboratory
MSDH Lab
0.0134 mg/l , sample collected Jun 18, 2013 03:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0012 mg/l , sample collected Jun 18, 2013 03:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 18, 2013 05:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
130619-021PB
Laboratory
MSDH Lab
0.0097 mg/l , sample collected Jun 18, 2013 05:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 18, 2013 05:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 18, 2013 07:30
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
130619-019PB
Laboratory
MSDH Lab
0.1531 mg/l , sample collected Jun 18, 2013 07:30, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 18, 2013 07:30, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Jun 18, 2013 18:20
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
130619-018PB
Laboratory
MSDH Lab
0.0466 mg/l , sample collected Jun 18, 2013 18:20, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 18, 2013 18:20, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013

Routine (10).