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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

MS0070006 , Town of Derma

20 of the 57 analytes this system has been tested for have been detected at least once, across 350 samples on record.

The other 37 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 350 samples on record, detections range from October 21, 1993 to June 19, 2025. These figures cover the whole record; the list of samples further down is narrowed.

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 Town of Derma, 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 104 of 154 results Oct 21, 1993 Jun 19, 2025
Lead 1030 Inorganic Chemical 88 of 154 results Oct 21, 1993 Jun 19, 2025
Arsenic 1005 Inorganic Chemical 22 of 22 results Jun 25, 2002 Jan 14, 2025
Barium 1010 Inorganic Chemical 22 of 22 results Jun 25, 2002 Jan 14, 2025
Fluoride 1025 Inorganic Chemical 22 of 22 results Jun 25, 2002 Jan 14, 2025
Selenium 1045 Inorganic Chemical 20 of 22 results Jun 25, 2002 Jan 9, 2024
Chromium 1020 Inorganic Chemical 17 of 22 results Jun 25, 2002 Jan 14, 2025
Nickel 1036 Inorganic Chemical 16 of 22 results Jun 25, 2002 Jan 14, 2025
TTHM 2950 Organic Chemical 15 of 20 results Jun 25, 2007 Apr 30, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 6, 2012 Oct 10, 2012
Bromoform 2942 Organic Chemical 9 of 15 results Sep 5, 2017 Apr 30, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 9 of 50 results Jun 7, 2006 Jan 18, 2017
Nitrate 1040 Inorganic Chemical 9 of 50 results Jun 7, 2006 Jan 18, 2017
Nitrite 1041 Inorganic Chemical 7 of 50 results Jun 7, 2006 May 19, 2010
Dibromoacetic Acid 2454 Organic Chemical 6 of 15 results Sep 5, 2017 Apr 30, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 25, 2019 Oct 22, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 5 of 22 results Jun 25, 2007 Jun 16, 2021
Dibromochloromethane 2944 Organic Chemical 3 of 15 results Sep 5, 2017 Apr 30, 2025
Xylenes, Total 2955 Organic Chemical 2 of 37 results Apr 8, 2008 Apr 22, 2009
Dichloroacetic Acid 2451 Organic Chemical 1 of 15 results Jun 4, 2019 Jun 4, 2019

Showing samples collected between September 25, 2024 and September 25, 2026. That is this page’s default, not a limit on what the agency records.

Show every sample on record

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The most recent samples, result by result

The table below lists 1–10 of 26 samples, newest first — collected June 19, 2025 to June 29, 2026. The summary above covers all 26.

43 results from the 10 samples listed here: 9 detected, 34 not detected. Across the whole record it is 398 of 1,761. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 8 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Town of Derma, every result from 1 to 10 of 26 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
Jun 29, 2026
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
35047224002
Laboratory
Pace Analytical Services, LLC
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Collected
Jun 29, 2026
Sampling point
TF103
Sample type
Routine
Lab sample
35047224001
Laboratory
Pace Analytical Services, LLC
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Nitrate-Nitrite 1038 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Nitrate 1040 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Nitrite 1041 EPA method 353.2 Jan 1, 2026 – Dec 31, 2026
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Dichloromethane 2964 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Benzene 2990 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Toluene 2991 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 29, 2026, sampling point TF103 Styrene 2996 EPA method 524.2 Jan 1, 2026 – Dec 31, 2031
Collected
Jun 19, 2025 06:50
Sampling point
LC0019 Location withheld
Sample type
Routine
Lab sample
PB-250620-020
Laboratory
MSDH Lab
0.0121 mg/l , sample collected Jun 19, 2025 06:50, sampling point LC0019 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 06:50, sampling point LC0019 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 07:12
Sampling point
LC0006 Location withheld
Sample type
Routine
Lab sample
PB-250620-019
Laboratory
MSDH Lab
0.0166 mg/l , sample collected Jun 19, 2025 07:12, sampling point LC0006 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 07:12, sampling point LC0006 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 06:00
Sampling point
LC0016 Location withheld
Sample type
Routine
Lab sample
PB-250620-018
Laboratory
MSDH Lab
0.273 mg/l , sample collected Jun 19, 2025 06:00, sampling point LC0016 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
1 ug/l , sample collected Jun 19, 2025 06:00, sampling point LC0016 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 07:30
Sampling point
LC0018 Location withheld
Sample type
Routine
Lab sample
PB-250620-017
Laboratory
MSDH Lab
0.31 mg/l , sample collected Jun 19, 2025 07:30, sampling point LC0018 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 07:30, sampling point LC0018 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 06:00
Sampling point
LC0004 Location withheld
Sample type
Routine
Lab sample
PB-250620-016
Laboratory
MSDH Lab
0.197 mg/l , sample collected Jun 19, 2025 06:00, sampling point LC0004 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 06:00, sampling point LC0004 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 07:00
Sampling point
LC0020 Location withheld
Sample type
Routine
Lab sample
PB-250620-015
Laboratory
MSDH Lab
0.0105 mg/l , sample collected Jun 19, 2025 07:00, sampling point LC0020 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 07:00, sampling point LC0020 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 05:00
Sampling point
LC0003 Location withheld
Sample type
Routine
Lab sample
PB-250620-014
Laboratory
MSDH Lab
0.0101 mg/l , sample collected Jun 19, 2025 05:00, sampling point LC0003 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 05:00, sampling point LC0003 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Collected
Jun 19, 2025 05:20
Sampling point
LC0015 Location withheld
Sample type
Routine
Lab sample
PB-250620-013
Laboratory
MSDH Lab
0.0066 mg/l , sample collected Jun 19, 2025 05:20, sampling point LC0015 Copper, Free 1022 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 19, 2025 05:20, sampling point LC0015 Lead 1030 EPA method 200.8 Jan 1, 2023 – Dec 31, 2025

Routine (10).