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
MS0310010 , Philadelphia Water Assn
26 of the 53 analytes this system has been tested for have been detected at least once, across 432 samples on record.
The other 27 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 432 samples on record, detections range from September 24, 2003 to July 30, 2026. 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 | 77 of 77 results | Jul 24, 2007 | Jul 30, 2026 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 62 of 62 results | Sep 15, 2004 | Jun 25, 2026 |
| TTHM 2950 | Organic Chemical | 61 of 61 results | Sep 15, 2004 | Nov 18, 2024 |
| Lead 1030 | Inorganic Chemical | 51 of 77 results | Jul 24, 2007 | Jul 29, 2026 |
| Dibromochloromethane 2944 | Organic Chemical | 47 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Chloroform 2941 | Organic Chemical | 46 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Bromoform 2942 | Organic Chemical | 46 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Bromodichloromethane 2943 | Organic Chemical | 46 of 47 results | May 17, 2006 | Nov 18, 2024 |
| Dichloroacetic Acid 2451 | Organic Chemical | 43 of 43 results | Sep 24, 2007 | Jun 25, 2026 |
| Trichloroacetic Acid 2452 | Organic Chemical | 43 of 43 results | Sep 24, 2007 | Jun 25, 2026 |
| Dibromoacetic Acid 2454 | Organic Chemical | 41 of 43 results | Sep 24, 2007 | Jun 25, 2026 |
| Barium 1010 | Inorganic Chemical | 30 of 30 results | Sep 24, 2003 | Feb 26, 2025 |
| Fluoride 1025 | Inorganic Chemical | 30 of 30 results | Sep 24, 2003 | Feb 26, 2025 |
| Chromium 1020 | Inorganic Chemical | 26 of 30 results | Sep 24, 2003 | May 16, 2022 |
| Sodium 1052 | Inorganic Chemical | 9 of 9 results | Sep 25, 2019 | Feb 5, 2025 |
| Xylenes, Total 2955 | Organic Chemical | 9 of 89 results | Aug 26, 2013 | Jul 31, 2017 |
| Arsenic 1005 | Inorganic Chemical | 9 of 30 results | Feb 23, 2004 | Jan 14, 2009 |
| Monochloroacetic Acid 2450 | Organic Chemical | 7 of 43 results | Apr 30, 2008 | Jul 16, 2013 |
| Nickel 1036 | Inorganic Chemical | 7 of 30 results | Mar 21, 2005 | Apr 11, 2012 |
| Sulfate 1055 | Inorganic Chemical | 6 of 6 results | Sep 24, 2003 | Feb 23, 2004 |
| Monobromoacetic Acid 2453 | Organic Chemical | 5 of 43 results | Aug 17, 2009 | Nov 13, 2017 |
| Selenium 1045 | Inorganic Chemical | 5 of 30 results | Feb 23, 2004 | Mar 21, 2005 |
| Cyanide 1024 | Inorganic Chemical | 3 of 30 results | Sep 14, 2009 | Apr 2, 2012 |
| Nitrate-Nitrite 1038 | Inorganic Chemical | 2 of 70 results | May 1, 2007 | Feb 21, 2023 |
| Nitrate 1040 | Inorganic Chemical | 2 of 70 results | May 1, 2007 | Feb 21, 2023 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 89 results | Aug 26, 2013 | Aug 26, 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 281–290 of 432 samples, newest first — collected May 17, 2011 to July 25, 2011. The summary above covers all 432.
27 results from the 10 samples listed here: 21 detected, 6 not detected. Across the whole record it is 714 of 3,149. 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 |
|---|---|---|
|
||
| 0.7807 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0008 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.7264 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.824 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0005 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.2356 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.6263 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.5628 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| 0.0006 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.3038 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| 0.8454 mg/l , sample collected Jul 25, 2011, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
| Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jul 25, 2011, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2009 – Dec 31, 2011 |
|
||
| Not detected below 0.002 mg/l Minimum Reporting Level , sample collected May 17, 2011, sampling point MRT000 | Monochloroacetic Acid 2450 EPA method 552.2 | Not recorded |
| 0.002 mg/l , sample collected May 17, 2011, sampling point MRT000 | Dichloroacetic Acid 2451 EPA method 552.2 | Not recorded |
| 0.003 mg/l , sample collected May 17, 2011, sampling point MRT000 | Trichloroacetic Acid 2452 EPA method 552.2 | Not recorded |
| 0.008 mg/l , sample collected May 17, 2011, sampling point MRT000 | Monobromoacetic Acid 2453 EPA method 552.2 | Not recorded |
| 0.004 mg/l , sample collected May 17, 2011, sampling point MRT000 | Dibromoacetic Acid 2454 EPA method 552.2 | Not recorded |
| 0.017 mg/l , sample collected May 17, 2011, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 | Apr 1, 2011 – Jun 30, 2011 |
|
||
| 5.23 ug/l , sample collected May 17, 2011, sampling point MRT000 | Chloroform 2941 EPA method 524.2 | Not recorded |
| 3.51 ug/l , sample collected May 17, 2011, sampling point MRT000 | Bromoform 2942 EPA method 524.2 | Not recorded |
| 8.9 ug/l , sample collected May 17, 2011, sampling point MRT000 | Bromodichloromethane 2943 EPA method 524.2 | Not recorded |
| 11.9 ug/l , sample collected May 17, 2011, sampling point MRT000 | Dibromochloromethane 2944 EPA method 524.2 | Not recorded |
| 29.5 ug/l , sample collected May 17, 2011, sampling point MRT000 | TTHM 2950 EPA method 524.2 | Apr 1, 2011 – Jun 30, 2011 |
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-030PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.7807 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0008 mg/l
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-029PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.7264 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-028PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.824 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0005 mg/l
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-027PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.2356 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-024PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.6263 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-023PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.5628 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-022PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.3038 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- Jul 25, 2011
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 110726-021PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2009 – Dec 31, 2011
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.8454 mg/l
-
Lead 1030 EPA method 200.8
- Result
- Not detected below 0.0005 mg/l Minimum Reporting Level
-
- Collected
- May 17, 2011
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 110518-006HA
- 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
- 0.002 mg/l
- Monitoring period
- Not recorded
-
Trichloroacetic Acid 2452 EPA method 552.2
- Result
- 0.003 mg/l
- Monitoring period
- Not recorded
-
Monobromoacetic Acid 2453 EPA method 552.2
- Result
- 0.008 mg/l
- Monitoring period
- Not recorded
-
Dibromoacetic Acid 2454 EPA method 552.2
- Result
- 0.004 mg/l
- Monitoring period
- Not recorded
-
Total Haloacetic Acids (Haa5) 2456
- Result
- 0.017 mg/l
- Monitoring period
- Apr 1, 2011 – Jun 30, 2011
-
- Collected
- May 17, 2011
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 110518-006TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 524.2
- Result
- 5.23 ug/l
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 524.2
- Result
- 3.51 ug/l
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 524.2
- Result
- 8.9 ug/l
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 524.2
- Result
- 11.9 ug/l
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 524.2
- Result
- 29.5 ug/l
- Monitoring period
- Apr 1, 2011 – Jun 30, 2011
Routine (10).