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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

MS0070002 , Big Creek Water Association

23 of the 57 analytes this system has been tested for have been detected at least once, across 356 samples on record.

The other 34 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 356 samples on record, detections range from November 11, 1993 to July 31, 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 Big Creek Water Association, 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 129 of 147 results Nov 11, 1993 Jul 31, 2026
Lead 1030 Inorganic Chemical 75 of 147 results Nov 11, 1993 Jun 22, 2022
Fluoride 1025 Inorganic Chemical 44 of 44 results Jun 25, 2002 Jul 30, 2026
Arsenic 1005 Inorganic Chemical 44 of 44 results Jun 25, 2002 Jun 11, 2026
Barium 1010 Inorganic Chemical 44 of 44 results Jun 25, 2002 Jun 11, 2026
Selenium 1045 Inorganic Chemical 37 of 44 results Jun 25, 2002 Jun 11, 2026
Nickel 1036 Inorganic Chemical 37 of 43 results Jun 25, 2002 Oct 8, 2025
Chromium 1020 Inorganic Chemical 31 of 44 results Jun 25, 2002 Oct 8, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 20 of 32 results Jun 27, 2007 Mar 26, 2025
TTHM 2950 Organic Chemical 15 of 30 results Jun 27, 2007 Oct 11, 2023
Gross Alpha, Incl. Radon & U 4002 Radionuclide 12 of 12 results Dec 8, 2011 Mar 14, 2016
Combined Radium (-226 & -228) 4010 Radionuclide 11 of 12 results Dec 8, 2011 Mar 14, 2016
Radium-226 4020 Radionuclide 11 of 12 results Dec 8, 2011 Mar 14, 2016
Nitrate 1040 Inorganic Chemical 9 of 43 results May 3, 2004 Mar 14, 2016
Nitrate-Nitrite 1038 Inorganic Chemical 7 of 43 results Jul 18, 2005 Mar 14, 2016
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 20, 2019 Jun 11, 2026
Radium-228 4030 Radionuclide 6 of 12 results Dec 8, 2011 Mar 14, 2016
Nitrite 1041 Inorganic Chemical 6 of 43 results Jul 18, 2005 Jan 18, 2011
Dibromoacetic Acid 2454 Organic Chemical 4 of 7 results Aug 13, 2008 Jun 4, 2019
Bromoform 2942 Organic Chemical 3 of 8 results Aug 4, 2014 Sep 6, 2017
Dichloroacetic Acid 2451 Organic Chemical 1 of 7 results Jun 4, 2019 Jun 4, 2019
Monobromoacetic Acid 2453 Organic Chemical 1 of 7 results Jun 4, 2019 Jun 4, 2019
Dibromochloromethane 2944 Organic Chemical 1 of 8 results Aug 4, 2014 Aug 4, 2014

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 321–330 of 356 samples, newest first — collected April 19, 1994 to April 19, 1994. The summary above covers all 356.

20 results from the 10 samples listed here: 16 detected, 4 not detected. Across the whole record it is 554 of 1,415. 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 Big Creek Water Association, every result from 321 to 330 of 356 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
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-157L
Laboratory
MSDH Lab
0.329 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.001 mg/l , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-156L
Laboratory
MSDH Lab
0.21 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-155L
Laboratory
MSDH Lab
0.281 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-154L
Laboratory
MSDH Lab
0.235 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.004 mg/l , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-153L
Laboratory
MSDH Lab
0.448 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.006 mg/l , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-152L
Laboratory
MSDH Lab
0.182 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-151L
Laboratory
MSDH Lab
0.657 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.003 mg/l , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-150L
Laboratory
MSDH Lab
0.146 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-149L
Laboratory
MSDH Lab
0.655 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
0.002 mg/l , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded
Collected
Apr 19, 1994
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
940420-148L
Laboratory
MSDH Lab
0.184 mg/l , sample collected Apr 19, 1994, sampling point DS000 Copper, Free 1022 Not recorded
Not detected below 0.001 mg/l Method Detection Limit , sample collected Apr 19, 1994, sampling point DS000 Lead 1030 Not recorded

Routine (10).