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
MS0140008 , Town of Jonestown
24 of the 57 analytes this system has been tested for have been detected at least once, across 397 samples on record.
The other 33 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 397 samples on record, detections range from November 22, 1993 to November 18, 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.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 203 of 259 results | Nov 22, 1993 | Jun 22, 2023 |
| Lead 1030 | Inorganic Chemical | 197 of 259 results | Nov 22, 1993 | Jun 22, 2023 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 17 of 21 results | Jul 12, 2007 | Nov 18, 2025 |
| TTHM 2950 | Organic Chemical | 17 of 21 results | Jul 12, 2007 | Nov 18, 2025 |
| Barium 1010 | Inorganic Chemical | 15 of 15 results | Apr 30, 2002 | Feb 3, 2025 |
| Fluoride 1025 | Inorganic Chemical | 14 of 15 results | Apr 30, 2002 | Feb 3, 2025 |
| Chloroform 2941 | Organic Chemical | 13 of 16 results | Jul 12, 2007 | Nov 18, 2025 |
| Bromoform 2942 | Organic Chemical | 13 of 16 results | Jul 12, 2007 | Nov 18, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 13 of 16 results | Jul 12, 2007 | Nov 18, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 13 of 16 results | Jul 12, 2007 | Nov 18, 2025 |
| Dibromoacetic Acid 2454 | Organic Chemical | 11 of 14 results | Aug 30, 2011 | Nov 18, 2025 |
| Chromium 1020 | Inorganic Chemical | 11 of 15 results | Apr 30, 2002 | Feb 3, 2025 |
| Selenium 1045 | Inorganic Chemical | 8 of 15 results | Sep 8, 2003 | Apr 20, 2020 |
| Trichloroacetic Acid 2452 | Organic Chemical | 5 of 14 results | Aug 30, 2011 | Nov 18, 2025 |
| Arsenic 1005 | Inorganic Chemical | 5 of 15 results | Dec 12, 2005 | Feb 3, 2025 |
| Dichloroacetic Acid 2451 | Organic Chemical | 4 of 14 results | Aug 30, 2011 | Nov 18, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 3 of 44 results | Jul 28, 2015 | Apr 12, 2016 |
| Cadmium 1015 | Inorganic Chemical | 3 of 15 results | Apr 30, 2002 | Dec 12, 2005 |
| Sodium 1052 | Inorganic Chemical | 2 of 2 results | Feb 2, 2021 | Oct 14, 2024 |
| Thallium, Total 1085 | Inorganic Chemical | 1 of 15 results | Apr 20, 2020 | Apr 20, 2020 |
| Monochloroacetic Acid 2450 | Organic Chemical | 1 of 14 results | Jul 24, 2018 | Jul 24, 2018 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 44 results | Jul 28, 2015 | Jul 28, 2015 |
| Nickel 1036 | Inorganic Chemical | 1 of 15 results | Mar 26, 2008 | Mar 26, 2008 |
| Sulfate 1055 | Inorganic Chemical | 1 of 4 results | Apr 30, 2002 | Apr 30, 2002 |
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 341–350 of 397 samples, newest first — collected October 27, 1994 to June 14, 1995. The summary above covers all 397.
20 results from the 10 samples listed here: 9 detected, 11 not detected. Across the whole record it is 572 of 1,900. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.096 mg/l , sample collected Jun 14, 1995, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.016 mg/l , sample collected Jun 14, 1995, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Jun 14, 1995, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 14, 1995, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Jun 14, 1995, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Jun 14, 1995, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Jun 14, 1995, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 14, 1995, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Jun 14, 1995, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.011 mg/l , sample collected Jun 14, 1995, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.082 mg/l , sample collected Oct 27, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Oct 27, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.072 mg/l , sample collected Oct 27, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 27, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 27, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| Not detected below 0.001 mg/l Method Detection Limit , sample collected Oct 27, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 27, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected Oct 27, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 27, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Oct 27, 1994, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- Jun 14, 1995
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 950615-030L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.096 mg/l
-
Lead 1030
- Result
- 0.016 mg/l
-
- Collected
- Jun 14, 1995
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 950615-029L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Jun 14, 1995
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 950615-028L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.001 mg/l
-
- Collected
- Jun 14, 1995
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 950615-027L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Jun 14, 1995
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 950615-026L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.011 mg/l
-
- Collected
- Oct 27, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941028-103L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.082 mg/l
-
Lead 1030
- Result
- 0.001 mg/l
-
- Collected
- Oct 27, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941028-102L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.072 mg/l
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Oct 27, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941028-101L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- Not detected below 0.001 mg/l Method Detection Limit
-
- Collected
- Oct 27, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941028-100L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.003 mg/l
-
- Collected
- Oct 27, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941028-099L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.001 mg/l
Routine (10).