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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

MS0300163 , Helena Utility District

20 of the 51 analytes this system has been tested for have been detected at least once, across 314 samples on record.

The other 31 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 314 samples on record, detections range from September 22, 2003 to July 22, 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 Helena Utility District, 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 216 of 216 results Oct 19, 2010 Jul 22, 2026
Lead 1030 Inorganic Chemical 141 of 216 results Oct 19, 2010 Jul 22, 2026
TTHM 2950 Organic Chemical 24 of 27 results Sep 16, 2010 Jun 30, 2026
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 21 of 27 results Sep 16, 2010 Jun 30, 2026
Dichloroacetic Acid 2451 Organic Chemical 12 of 17 results Oct 1, 2013 Jun 30, 2026
Chloroform 2941 Organic Chemical 12 of 17 results Oct 1, 2013 Jun 30, 2026
Dibromochloromethane 2944 Organic Chemical 12 of 17 results Oct 1, 2013 Jun 30, 2026
Barium 1010 Inorganic Chemical 10 of 10 results Sep 22, 2003 Nov 5, 2009
Fluoride 1025 Inorganic Chemical 10 of 10 results Sep 22, 2003 Nov 5, 2009
Bromodichloromethane 2943 Organic Chemical 9 of 17 results Oct 1, 2013 Jun 30, 2026
Trichloroacetic Acid 2452 Organic Chemical 6 of 17 results Oct 1, 2013 Jun 30, 2026
Chromium 1020 Inorganic Chemical 5 of 10 results Sep 22, 2003 Dec 12, 2005
Monochloroacetic Acid 2450 Organic Chemical 4 of 17 results Apr 9, 2014 Jun 25, 2018
Dibromoacetic Acid 2454 Organic Chemical 3 of 17 results Oct 1, 2013 Sep 27, 2016
Bromoform 2942 Organic Chemical 3 of 17 results Jul 7, 2014 Sep 27, 2016
Nickel 1036 Inorganic Chemical 2 of 10 results Nov 5, 2009 Nov 5, 2009
Selenium 1045 Inorganic Chemical 2 of 10 results Mar 14, 2005 Dec 12, 2005
Arsenic 1005 Inorganic Chemical 1 of 10 results Dec 12, 2005 Dec 12, 2005
Cadmium 1015 Inorganic Chemical 1 of 10 results Dec 12, 2005 Dec 12, 2005
Sulfate 1055 Inorganic Chemical 1 of 4 results Sep 22, 2003 Sep 22, 2003

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 231–240 of 314 samples, newest first — collected October 26, 2011 to October 27, 2011. The summary above covers all 314.

20 results from the 10 samples listed here: 19 detected, 1 not detected. Across the whole record it is 495 of 1,060. 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 Helena Utility District, every result from 231 to 240 of 314 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
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-035PB
Laboratory
MSDH Lab
0.0142 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0007 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-032PB
Laboratory
MSDH Lab
0.0428 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0065 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-031PB
Laboratory
MSDH Lab
0.1958 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0059 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-030PB
Laboratory
MSDH Lab
0.0318 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0011 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-029PB
Laboratory
MSDH Lab
0.1521 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0041 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-028PB
Laboratory
MSDH Lab
0.0968 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0111 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-027PB
Laboratory
MSDH Lab
0.0333 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0027 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-026PB
Laboratory
MSDH Lab
0.2264 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0148 mg/l , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 27, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-025PB
Laboratory
MSDH Lab
0.0057 mg/l , sample collected Oct 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Oct 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
Collected
Oct 26, 2011
Sampling point
DS000
Sample type
Routine
Lab sample
111028-034PB
Laboratory
MSDH Lab
0.0092 mg/l , sample collected Oct 26, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011
0.0008 mg/l , sample collected Oct 26, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jul 1, 2011 – Dec 31, 2011

Routine (10).