Skip to main content
Alpha

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

MS0260003 , Castalian W/A

10 of the 51 analytes this system has been tested for have been detected at least once, across 113 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 113 samples on record, detections range from August 17, 1993 to September 10, 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.

Every analyte ever detected for Castalian W/A, 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 66 of 84 results Aug 17, 1993 Sep 10, 2025
Lead 1030 Inorganic Chemical 36 of 84 results Aug 17, 1993 Sep 10, 2025
TTHM 2950 Organic Chemical 6 of 9 results Jun 4, 2007 Oct 17, 2022
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 4 of 9 results Jun 4, 2007 Oct 17, 2022
Chloroform 2941 Organic Chemical 3 of 6 results Jul 1, 2009 Aug 17, 2017
Dichloroacetic Acid 2451 Organic Chemical 2 of 5 results Jul 1, 2009 Jun 28, 2011
Barium 1010 Inorganic Chemical 2 of 2 results Sep 17, 2003 Feb 9, 2004
Sulfate 1055 Inorganic Chemical 2 of 2 results Sep 17, 2003 Feb 9, 2004
Monobromoacetic Acid 2453 Organic Chemical 1 of 5 results Jul 1, 2009 Jul 1, 2009
Fluoride 1025 Inorganic Chemical 1 of 2 results Sep 17, 2003 Sep 17, 2003

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 111–113 of 113 samples, newest first — collected August 17, 1993 to August 17, 1993. The summary above covers all 113.

6 results from the 3 samples listed here: 6 detected, 0 not detected. 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 Castalian W/A, every result from 111 to 113 of 113 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
Aug 17, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930818-085L
Laboratory
MSDH Lab
0.636 mg/l , sample collected Aug 17, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.005 mg/l , sample collected Aug 17, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 17, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930818-084L
Laboratory
MSDH Lab
0.174 mg/l , sample collected Aug 17, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Aug 17, 1993, sampling point DS000 Lead 1030 Not recorded
Collected
Aug 17, 1993
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
930818-083L
Laboratory
MSDH Lab
0.172 mg/l , sample collected Aug 17, 1993, sampling point DS000 Copper, Free 1022 Not recorded
0.003 mg/l , sample collected Aug 17, 1993, sampling point DS000 Lead 1030 Not recorded

Routine (3).