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 11–20 of 397 samples, newest first — collected June 22, 2023 to November 19, 2024. The summary above covers all 397.
43 results from the 10 samples listed here: 28 detected, 15 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.
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 |
|---|---|---|
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Nov 19, 2024 15:20, sampling point SM2 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 19, 2024 15:20, sampling point SM2 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 1.1 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Nov 19, 2024 15:20, sampling point SM2 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 7.5 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 8.6 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Oct 1, 2024 – Dec 31, 2024 |
| 2.6 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 45 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 5.3 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 16 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 68.9 ug/l , sample collected Nov 19, 2024 15:20, sampling point SM2 | TTHM 2950 EPA method 524.2 | Oct 1, 2024 – Dec 31, 2024 |
|
||
| 115 mg/l , sample collected Oct 14, 2024 12:15, sampling point TF101 | Sodium 1052 EPA method 200.7 | Jan 1, 2022 – Dec 31, 2024 |
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 18, 2024 15:25, sampling point SM1 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 1.2 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 1.7 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 18, 2024 15:25, sampling point SM1 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 5 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 7.9 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jul 1, 2024 – Sep 30, 2024 |
| 1.3 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 3.9 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.9 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 2.9 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 10 ug/l , sample collected Sep 18, 2024 15:25, sampling point SM1 | TTHM 2950 EPA method 524.2 | Jul 1, 2024 – Sep 30, 2024 |
|
||
| Not detected below 2 ug/l Minimum Reporting Level , sample collected Sep 18, 2024 15:10, sampling point SM2 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 18, 2024 15:10, sampling point SM2 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 18, 2024 15:10, sampling point SM2 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 18, 2024 15:10, sampling point SM2 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 3.6 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 3.6 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jul 1, 2024 – Sep 30, 2024 |
| 3.3 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 12 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 5.7 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 11 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 32 ug/l , sample collected Sep 18, 2024 15:10, sampling point SM2 | TTHM 2950 EPA method 524.2 | Jul 1, 2024 – Sep 30, 2024 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 11, 2024 14:00, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Not recorded |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 11, 2024 14:00, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Not recorded |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 23, 2024 11:49, sampling point TF101 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2024 – Dec 31, 2024 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jan 23, 2024 11:49, sampling point TF101 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2024 – Dec 31, 2024 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 23, 2024 11:49, sampling point TF101 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2024 – Dec 31, 2024 |
|
||
| 5.9 ug/l , sample collected Jul 24, 2023 12:10, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Not recorded |
|
||
| 30.6 ug/l , sample collected Jul 24, 2023 12:10, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Not recorded |
|
||
| 0.0375 mg/l , sample collected Jun 22, 2023 06:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2021 – Dec 31, 2023 |
| Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 22, 2023 06:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2021 – Dec 31, 2023 |
-
- Collected
- Nov 19, 2024 15:20
- Sampling point
- SM2 Location withheld
- Sample type
- Routine
- Lab sample
- 810-128788-1
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 1.1 ug/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 7.5 ug/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 8.6 ug/l
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- 2.6 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 45 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 5.3 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 16 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 68.9 ug/l
- Monitoring period
- Oct 1, 2024 – Dec 31, 2024
-
- Collected
- Oct 14, 2024 12:15
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NA-241015-042
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2022 – Dec 31, 2024
-
Sodium 1052 EPA method 200.7
- Result
- 115 mg/l
-
- Collected
- Sep 18, 2024 15:25
- Sampling point
- SM1 Location withheld
- Sample type
- Routine
- Lab sample
- 810-120766-2
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- 1.2 ug/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 1.7 ug/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 5 ug/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 7.9 ug/l
- Monitoring period
- Jul 1, 2024 – Sep 30, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- 1.3 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 3.9 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 1.9 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 2.9 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 10 ug/l
- Monitoring period
- Jul 1, 2024 – Sep 30, 2024
-
- Collected
- Sep 18, 2024 15:10
- Sampling point
- SM2 Location withheld
- Sample type
- Routine
- Lab sample
- 810-120766-1
- Laboratory
- Eurofins Eaton Analytical South Bend in
-
Monochloroacetic Acid 2450 EPA method 552.2
- Result
- Not detected below 2 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dichloroacetic Acid 2451 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 3.6 ug/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 3.6 ug/l
- Monitoring period
- Jul 1, 2024 – Sep 30, 2024
-
Chloroform 2941 EPA method 524.2
- Result
- 3.3 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 12 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 5.7 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 11 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 32 ug/l
- Monitoring period
- Jul 1, 2024 – Sep 30, 2024
-
- Collected
- Mar 11, 2024 14:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-240312-012
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Mar 11, 2024 14:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- HA-240312-012
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
-
- Collected
- Jan 23, 2024 11:49
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- NI-240124-003
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2024 – Dec 31, 2024
-
Nitrate-Nitrite 1038 EPA method QC10107041C
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method QC10107041C
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method QC10107041C
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jul 24, 2023 12:10
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- HA-230725-015
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 5.9 ug/l
-
- Collected
- Jul 24, 2023 12:10
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- TH-230725-016
- Laboratory
- MSDH Lab
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 30.6 ug/l
-
- Collected
- Jun 22, 2023 06:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- PB-230627-007
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2021 – Dec 31, 2023
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0375 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.5 ug/l Minimum Reporting Level
Routine (10).