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
MS0500008 , City of Philadelphia
25 of the 60 analytes this system has been tested for have been detected at least once, across 255 samples on record.
The other 35 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 255 samples on record, detections range from October 8, 2003 to November 17, 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 | 159 of 160 results | Jun 15, 2004 | Jun 27, 2025 |
| Lead 1030 | Inorganic Chemical | 29 of 160 results | Jun 15, 2004 | Jun 24, 2025 |
| TTHM 2950 | Organic Chemical | 16 of 19 results | Jul 19, 2004 | Aug 19, 2025 |
| Chloroform 2941 | Organic Chemical | 11 of 14 results | Aug 27, 2007 | Aug 19, 2025 |
| Bromodichloromethane 2943 | Organic Chemical | 11 of 14 results | Aug 27, 2007 | Aug 19, 2025 |
| Dibromochloromethane 2944 | Organic Chemical | 11 of 14 results | Aug 27, 2007 | Aug 19, 2025 |
| Barium 1010 | Inorganic Chemical | 10 of 10 results | Oct 8, 2003 | Mar 18, 2025 |
| Fluoride 1025 | Inorganic Chemical | 9 of 10 results | Oct 8, 2003 | Oct 3, 2022 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 8 of 19 results | Jun 14, 2010 | Nov 12, 2024 |
| Dichloroacetic Acid 2451 | Organic Chemical | 6 of 14 results | Jul 11, 2016 | Nov 17, 2025 |
| Nickel 1036 | Inorganic Chemical | 6 of 10 results | Mar 8, 2004 | Mar 18, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 5 of 5 results | Mar 14, 2012 | Oct 9, 2012 |
| Bromoform 2942 | Organic Chemical | 4 of 14 results | Jun 10, 2024 | Aug 19, 2025 |
| Sodium 1052 | Inorganic Chemical | 3 of 3 results | Sep 13, 2019 | Feb 24, 2025 |
| Chromium 1020 | Inorganic Chemical | 3 of 10 results | Apr 4, 2005 | May 7, 2019 |
| Selenium 1045 | Inorganic Chemical | 2 of 10 results | Apr 4, 2005 | Apr 29, 2013 |
| Gross Alpha, Excl. Radon & U 4000 | Radionuclide | 2 of 2 results | Sep 17, 2009 | Mar 5, 2010 |
| Combined Radium (-226 & -228) 4010 | Radionuclide | 2 of 7 results | Sep 17, 2009 | Mar 5, 2010 |
| Radium-226 4020 | Radionuclide | 2 of 7 results | Sep 17, 2009 | Mar 5, 2010 |
| Radium-228 4030 | Radionuclide | 2 of 7 results | Sep 17, 2009 | Mar 5, 2010 |
| Gross Beta Particle Activity 4100 | Radionuclide | 2 of 2 results | Sep 17, 2009 | Mar 5, 2010 |
| Gross Alpha Particle Activity 4109 | Radionuclide | 2 of 2 results | Sep 17, 2009 | Mar 5, 2010 |
| Nitrate 1040 | Inorganic Chemical | 2 of 22 results | May 24, 2004 | Jul 17, 2006 |
| Sulfate 1055 | Inorganic Chemical | 2 of 2 results | Oct 8, 2003 | Mar 8, 2004 |
| Arsenic 1005 | Inorganic Chemical | 1 of 10 results | Apr 29, 2013 | Apr 29, 2013 |
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 211–220 of 255 samples, newest first — collected March 8, 2006 to September 11, 2007. The summary above covers all 255.
39 results from the 10 samples listed here: 14 detected, 25 not detected. Across the whole record it is 310 of 863. 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 |
|---|---|---|
|
||
| 0.0172 mg/l , sample collected Sep 11, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0151 mg/l , sample collected Sep 11, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0305 mg/l , sample collected Sep 11, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.0008 mg/l , sample collected Sep 11, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0075 mg/l , sample collected Sep 11, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Sep 11, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 0.0266 mg/l , sample collected Sep 10, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.0021 mg/l , sample collected Sep 10, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| 1.31 ug/l , sample collected Aug 27, 2007, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 27, 2007, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 1.23 ug/l , sample collected Aug 27, 2007, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 1.1 ug/l , sample collected Aug 27, 2007, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 3.64 ug/l , sample collected Aug 27, 2007, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Jan 1, 2005 – Dec 31, 2007 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected May 14, 2007, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 17, 2006, sampling point TF080 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| 0.08 mg/l , sample collected Jul 17, 2006, sampling point TF080 | Nitrate 1040 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 17, 2006, sampling point TF080 | Nitrite 1041 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Arsenic 1005 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 0.020442 mg/l , sample collected Mar 8, 2006, sampling point TF080 | Barium 1010 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Cadmium 1015 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Chromium 1020 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| 1.718196 mg/l , sample collected Mar 8, 2006, sampling point TF080 | Fluoride 1025 EPA method 380-75WE | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Mercury 1035 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Nickel 1036 EPA method 200.8 | Not recorded |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Selenium 1045 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Antimony, Total 1074 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Beryllium, Total 1075 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Thallium, Total 1085 EPA method 200.8 | Jan 1, 2005 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 8, 2006, sampling point TF080 | Uranium-238 4009 | Not recorded |
-
- Collected
- Sep 11, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070912-164PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0172 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 11, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070912-163PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0151 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 11, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070912-162PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0305 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Sep 11, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070912-161PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0075 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Sep 10, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070912-269PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0266 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0021 mg/l
-
- Collected
- Aug 27, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070828-030HA
- 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
- Not detected below 0.001 mg/l Minimum Reporting Level
- 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
- Not detected below 0.001 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- Not detected below 0.006 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
- Collected
- Aug 27, 2007
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 070828-026TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 1.31 ug/l
- 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
- 1.23 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 1.1 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 3.64 ug/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
- Collected
- May 14, 2007
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 070515-079NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Jul 17, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060718-052NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- 0.08 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Mar 8, 2006
- Sampling point
- TF080 Treatment Plant T080
- Sample type
- Routine
- Lab sample
- 060309-046IN
- Laboratory
- MSDH Lab
-
Arsenic 1005 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Barium 1010 EPA method 200.8
- Result
- 0.020442 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cadmium 1015 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Chromium 1020 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Fluoride 1025 EPA method 380-75WE
- Result
- 1.718196 mg/l
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Mercury 1035 EPA method 200.8
- Result
- Not detected below 0.0002 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Nickel 1036 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Selenium 1045 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Antimony, Total 1074 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Beryllium, Total 1075 EPA method 200.8
- Result
- Not detected below 0.0001 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Thallium, Total 1085 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Uranium-238 4009
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
- Monitoring period
- Not recorded
Routine (10).