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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

MS0160010 , Willow Grove Water Assn

16 of the 57 analytes this system has been tested for have been detected at least once, across 560 samples on record.

The other 41 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 560 samples on record, detections range from December 31, 1993 to January 28, 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.

Every analyte ever detected for Willow Grove Water Assn, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 280 of 315 results Dec 31, 1993 Aug 6, 2024
Lead 1030 Inorganic Chemical 192 of 315 results Dec 31, 1993 Aug 6, 2024
Nitrate-Nitrite 1038 Inorganic Chemical 50 of 69 results May 3, 2004 Jan 28, 2026
Nitrate 1040 Inorganic Chemical 50 of 69 results May 3, 2004 Jan 28, 2026
Barium 1010 Inorganic Chemical 34 of 34 results Apr 23, 2002 Feb 5, 2025
Nickel 1036 Inorganic Chemical 27 of 34 results Apr 23, 2002 Feb 5, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 8, 2012 Oct 11, 2012
Sodium 1052 Inorganic Chemical 9 of 9 results Sep 25, 2019 Oct 14, 2024
Fluoride 1025 Inorganic Chemical 9 of 34 results Apr 23, 2002 Oct 3, 2018
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 7 of 21 results Jul 9, 2007 Mar 12, 2025
Chromium 1020 Inorganic Chemical 7 of 34 results Apr 23, 2002 Apr 14, 2014
Sulfate 1055 Inorganic Chemical 6 of 7 results Apr 23, 2002 Jan 28, 2004
Selenium 1045 Inorganic Chemical 4 of 34 results Feb 28, 2005 Mar 20, 2006
Xylenes, Total 2955 Organic Chemical 2 of 47 results Jul 17, 2012 Jul 17, 2012
TTHM 2950 Organic Chemical 2 of 19 results Jul 9, 2007 Sep 16, 2008
Chloroform 2941 Organic Chemical 1 of 14 results Jul 9, 2007 Jul 9, 2007

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 461–470 of 560 samples, newest first — collected June 29, 2000 to June 29, 2000. The summary above covers all 560.

20 results from the 10 samples listed here: 10 detected, 10 not detected. Across the whole record it is 695 of 2,479. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for Willow Grove Water Assn, every result from 461 to 470 of 560 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-019L
Laboratory
MSDH Lab
0.006 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-017L
Laboratory
MSDH Lab
0.004 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-015L
Laboratory
MSDH Lab
0.005 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-014L
Laboratory
MSDH Lab
0.005 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-013L
Laboratory
MSDH Lab
0.004 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-010L
Laboratory
MSDH Lab
0.006 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-007L
Laboratory
MSDH Lab
0.005 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-005L
Laboratory
MSDH Lab
0.004 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-003L
Laboratory
MSDH Lab
0.004 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded
Collected
Jun 29, 2000
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
000630-002L
Laboratory
MSDH Lab
0.005 mg/l , sample collected Jun 29, 2000, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Jun 29, 2000, sampling point DS000 Lead 1030 Not recorded

Routine (10).