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.
| 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 141–150 of 314 samples, newest first — collected August 16, 2016 to April 25, 2017. The summary above covers all 314.
27 results from the 10 samples listed here: 22 detected, 5 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.
We withheld the location of 2 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.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.0609 mg/l , sample collected Apr 25, 2017 05:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2017 05:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
|
||
| 0.178 mg/l , sample collected Apr 25, 2017 08:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
| 0.0174 mg/l , sample collected Apr 25, 2017 08:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
|
||
| 0.0578 mg/l , sample collected Apr 25, 2017 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
| 0.0582 mg/l , sample collected Apr 25, 2017 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
|
||
| 0.0015 mg/l , sample collected Jan 9, 2017 10:18, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
| 0.0012 mg/l , sample collected Jan 9, 2017 10:18, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2017 – Jun 30, 2017 |
|
||
| 2.1 ug/l , sample collected Sep 27, 2016 02:10, sampling point SMH | Chloroform 2941 EPA method 524.2 | Not recorded |
| 2.97 ug/l , sample collected Sep 27, 2016 02:10, sampling point SMH | Bromoform 2942 EPA method 524.2 | Not recorded |
| 3.93 ug/l , sample collected Sep 27, 2016 02:10, sampling point SMH | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 6.27 ug/l , sample collected Sep 27, 2016 02:10, sampling point SMH | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 15.3 ug/l , sample collected Sep 27, 2016 02:10, sampling point SMH | TTHM 2950 | Jan 1, 2016 – Dec 31, 2016 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 27, 2016 02:28, sampling point SMT | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.001 mg/l , sample collected Sep 27, 2016 02:28, sampling point SMT | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 27, 2016 02:28, sampling point SMT | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 27, 2016 02:28, sampling point SMT | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected Sep 27, 2016 02:28, sampling point SMT | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.003 mg/l , sample collected Sep 27, 2016 02:28, sampling point SMT | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2016 – Dec 31, 2016 |
|
||
| 0.1923 mg/l , sample collected Aug 16, 2016 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
| 0.0008 mg/l , sample collected Aug 16, 2016 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
|
||
| 0.0896 mg/l , sample collected Aug 16, 2016 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
| 0.0354 mg/l , sample collected Aug 16, 2016 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
|
||
| 0.0581 mg/l , sample collected Aug 16, 2016 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
| 0.0029 mg/l , sample collected Aug 16, 2016 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
|
||
| 0.1081 mg/l , sample collected Aug 16, 2016, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Aug 16, 2016, sampling point DS000 | Lead 1030 EPA method 200.8 | Jul 1, 2016 – Dec 31, 2016 |
-
- Collected
- Apr 25, 2017 05:15
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 170426-046PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Jun 30, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0609 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Apr 25, 2017 08:00
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 170426-054PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Jun 30, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.178 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0174 mg/l
-
- Collected
- Apr 25, 2017 06:30
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 170426-047PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Jun 30, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0578 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0582 mg/l
-
- Collected
- Jan 9, 2017 10:18
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 170111-010PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Jun 30, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0015 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0012 mg/l
-
- Collected
- Sep 27, 2016 02:10
- Sampling point
- SMH Location withheld
- Sample type
- Routine
- Lab sample
- 160928-003TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 2.1 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 2.97 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 3.93 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 6.27 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950
- Result
- 15.3 ug/l
- Monitoring period
- Jan 1, 2016 – Dec 31, 2016
-
- Collected
- Sep 27, 2016 02:28
- Sampling point
- SMT Location withheld
- Sample type
- Routine
- Lab sample
- 160928-003HA
- Laboratory
- MSDH Lab
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 0.002 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 0.001 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 0.002 mg/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.003 mg/l
- Monitoring period
- Jan 1, 2016 – Dec 31, 2016
-
- Collected
- Aug 16, 2016 07:00
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 160817-020PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2016 – Dec 31, 2016
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1923 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Aug 16, 2016 07:00
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 160817-019PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2016 – Dec 31, 2016
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0896 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0354 mg/l
-
- Collected
- Aug 16, 2016 07:30
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 160817-018PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2016 – Dec 31, 2016
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0581 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0029 mg/l
-
- Collected
- Aug 16, 2016
- Sampling point
- DS000
- Sample type
- Routine
- Lab sample
- 160817-017PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jul 1, 2016 – Dec 31, 2016
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1081 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
Routine (10).