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
MS0510005 , Duffee Water Association
32 of the 72 analytes this system has been tested for have been detected at least once, across 173 samples on record.
The other 40 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 173 samples on record, detections range from October 13, 2003 to December 2, 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 | 66 of 66 results | Jul 31, 2007 | Sep 12, 2023 |
| Lead 1030 | Inorganic Chemical | 18 of 66 results | Jul 31, 2007 | Sep 12, 2023 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Oct 13, 2003 | Dec 2, 2025 |
| TTHM 2950 | Organic Chemical | 7 of 19 results | Jul 19, 2004 | Sep 9, 2025 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 7 of 20 results | Jun 16, 2010 | Aug 13, 2024 |
| Chromium 1020 | Inorganic Chemical | 7 of 10 results | Oct 13, 2003 | May 8, 2019 |
| Dichloroacetic Acid 2451 | Organic Chemical | 5 of 15 results | Jun 10, 2019 | Sep 9, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 5 of 14 results | Sep 24, 2007 | Sep 9, 2025 |
| Chloroform 2941 | Organic Chemical | 4 of 14 results | Sep 24, 2007 | Sep 9, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 3 of 14 results | Sep 24, 2007 | Sep 9, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Mar 26, 2010 | Feb 25, 2025 |
| Nickel 1036 | Inorganic Chemical | 3 of 10 results | Nov 3, 2008 | May 8, 2019 |
| Sulfate 1055 | Inorganic Chemical | 3 of 3 results | Oct 13, 2003 | Mar 26, 2010 |
| Fluoride 1025 | Inorganic Chemical | 2 of 11 results | Mar 26, 2010 | Dec 2, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 2 of 22 results | Aug 13, 2008 | Jul 6, 2011 |
| Trichloroacetic Acid 2452 | Organic Chemical | 1 of 15 results | Jun 10, 2019 | Jun 10, 2019 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 22 results | Jul 6, 2011 | Jul 6, 2011 |
| Calcium 1016 | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Chloride 1017 | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Iron 1028 | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Magnesium 1031 | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Manganese 1032 | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Potassium 1042 | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Residue, Total, Filterable 1057 | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Alkalinity, Caco3 Stability 1067 | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Carbon Dioxide 1901 | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Color 1905 | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Hardness, Total (As Caco3) 1915 | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Alkalinity, Total 1927 | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Iron, Field Result FEFD | Inorganic Chemical | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| Calculated Sodium NACA | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
| PH, Field Result PHFD | Water Quality | 1 of 1 result | Mar 26, 2010 | Mar 26, 2010 |
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 61–70 of 173 samples, newest first — collected July 11, 2016 to July 11, 2017. The summary above covers all 173.
24 results from the 10 samples listed here: 11 detected, 13 not detected. Across the whole record it is 162 of 1,002. 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 |
|---|---|---|
|
||
| 0.0457 mg/l , sample collected Jul 11, 2017 06:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2017 06:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.2109 mg/l , sample collected Jul 11, 2017 05:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2017 05:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0978 mg/l , sample collected Jul 11, 2017 07:00, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0005 mg/l , sample collected Jul 11, 2017 07:00, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.1063 mg/l , sample collected Jul 11, 2017 09:45, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0008 mg/l , sample collected Jul 11, 2017 09:45, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.22 mg/l , sample collected Jul 11, 2017 04:52, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2017 04:52, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.0029 mg/l , sample collected Jul 11, 2017 07:30, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2017 07:30, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.3767 mg/l , sample collected Jul 11, 2017 05:15, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 11, 2017 05:15, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| 0.2216 mg/l , sample collected Jul 10, 2017, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
| 0.0015 mg/l , sample collected Jul 10, 2017, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2015 – Dec 31, 2017 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 14, 2017 12:05, sampling point TF081 | Nitrate-Nitrite 1038 EPA method QC10107041C | Jan 1, 2017 – Dec 31, 2017 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 14, 2017 12:05, sampling point TF081 | Nitrate 1040 EPA method QC10107041C | Jan 1, 2017 – Dec 31, 2017 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 14, 2017 12:05, sampling point TF081 | Nitrite 1041 EPA method QC10107041C | Jan 1, 2017 – Dec 31, 2017 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2016 01:00, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2016 01:00, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2016 01:00, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 11, 2016 01:00, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| Not detected below 4 ug/l Minimum Reporting Level , sample collected Jul 11, 2016 01:00, sampling point MRT000 | TTHM 2950 | Jan 1, 2014 – Dec 31, 2016 |
-
- Collected
- Jul 11, 2017 06:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-141PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0457 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 11, 2017 05:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-140PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2109 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 11, 2017 07:00
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-139PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0978 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Jul 11, 2017 09:45
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-138PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1063 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jul 11, 2017 04:52
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-137PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.22 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 11, 2017 07:30
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-136PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0029 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 11, 2017 05:15
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-129PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3767 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 10, 2017
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 170712-145PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2015 – Dec 31, 2017
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2216 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0015 mg/l
-
- Collected
- Mar 14, 2017 12:05
- Sampling point
- TF081
- Sample type
- Routine
- Lab sample
- 170315-012NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2017 – Dec 31, 2017
-
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 11, 2016 01:00
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 160712-015TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950
- Result
- Not detected below 4 ug/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2014 – Dec 31, 2016
Routine (10).