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 398 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 398 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 361–370 of 398 samples, newest first — collected May 19, 1994 to October 26, 1994. The summary above covers all 398.
20 results from the 10 samples listed here: 12 detected, 8 not detected. Across the whole record it is 572 of 1,903. 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 |
|---|---|---|
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 26, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.004 mg/l , sample collected Oct 26, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.117 mg/l , sample collected Oct 26, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected Oct 26, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 26, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Oct 26, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 25, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.14 mg/l , sample collected Oct 25, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected Oct 25, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.001 mg/l , sample collected Oct 25, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| 0.056 mg/l , sample collected Oct 25, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected Oct 25, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected May 19, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.003 mg/l , sample collected May 19, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected May 19, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected May 19, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected May 19, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected May 19, 1994, sampling point DS000 | Lead 1030 | Not recorded |
|
||
| Not detected below 0.02 mg/l Method Detection Limit , sample collected May 19, 1994, sampling point DS000 | Copper, Free 1022 | Not recorded |
| 0.002 mg/l , sample collected May 19, 1994, sampling point DS000 | Lead 1030 | Not recorded |
-
- Collected
- Oct 26, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941027-012L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.004 mg/l
-
- Collected
- Oct 26, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941027-007L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.117 mg/l
-
Lead 1030
- Result
- 0.003 mg/l
-
- Collected
- Oct 26, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941027-006L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- Oct 25, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941026-043L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.14 mg/l
-
- Collected
- Oct 25, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941026-042L
- 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
- Oct 25, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 941026-034L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- 0.056 mg/l
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- May 19, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940520-039L
- 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
- May 19, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940520-038L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- May 19, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940520-037L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
-
- Collected
- May 19, 1994
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 940520-036L
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Copper, Free 1022
- Result
- Not detected below 0.02 mg/l Method Detection Limit
-
Lead 1030
- Result
- 0.002 mg/l
Routine (10).