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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

MS0400016 , Marydell Water Association

37 of the 72 analytes this system has been tested for have been detected at least once, across 337 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 337 samples on record, detections range from October 1, 2003 to December 8, 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 Marydell 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 123 of 123 results Aug 16, 2007 Oct 7, 2020
Lead 1030 Inorganic Chemical 63 of 123 results Aug 16, 2007 Oct 6, 2020
Barium 1010 Inorganic Chemical 27 of 27 results Oct 1, 2003 Mar 11, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 21 of 24 results Sep 30, 2009 Dec 8, 2025
TTHM 2950 Organic Chemical 21 of 23 results Jul 7, 2004 Dec 8, 2025
Chloroform 2941 Organic Chemical 15 of 18 results Jul 25, 2013 Dec 8, 2025
Bromodichloromethane 2943 Organic Chemical 15 of 18 results Jul 25, 2013 Dec 8, 2025
Dibromochloromethane 2944 Organic Chemical 15 of 18 results Jul 25, 2013 Dec 8, 2025
Chromium 1020 Inorganic Chemical 15 of 27 results Oct 1, 2003 Mar 11, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 15 of 15 results Mar 8, 2012 Oct 11, 2012
Dichloroacetic Acid 2451 Organic Chemical 14 of 18 results Jul 25, 2013 Dec 8, 2025
Trichloroacetic Acid 2452 Organic Chemical 13 of 18 results Jul 25, 2013 Dec 8, 2025
Bromoform 2942 Organic Chemical 13 of 18 results Jul 25, 2013 Dec 8, 2025
Sodium 1052 Inorganic Chemical 12 of 12 results Sep 24, 2019 Feb 19, 2025
Dibromoacetic Acid 2454 Organic Chemical 10 of 18 results Jul 25, 2013 Dec 8, 2025
Fluoride 1025 Inorganic Chemical 9 of 30 results May 10, 2017 Mar 11, 2025
Nickel 1036 Inorganic Chemical 7 of 27 results Oct 1, 2003 Mar 11, 2025
Sulfate 1055 Inorganic Chemical 7 of 7 results Oct 1, 2003 Dec 11, 2020
Calcium 1016 Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Chloride 1017 Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Iron 1028 Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Magnesium 1031 Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Manganese 1032 Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Potassium 1042 Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Residue, Total, Filterable 1057 Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Alkalinity, Caco3 Stability 1067 Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Carbon Dioxide 1901 Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Color 1905 Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Hardness, Total (As Caco3) 1915 Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Alkalinity, Total 1927 Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Iron, Field Result FEFD Inorganic Chemical 3 of 3 results Dec 11, 2020 Dec 11, 2020
Calculated Sodium NACA Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
PH, Field Result PHFD Water Quality 3 of 3 results Dec 11, 2020 Dec 11, 2020
Monobromoacetic Acid 2453 Organic Chemical 2 of 18 results Jul 6, 2015 Sep 24, 2019
Xylenes, Total 2955 Organic Chemical 2 of 25 results Mar 5, 2009 May 11, 2009
Dichloromethane 2964 Organic Chemical 2 of 25 results Aug 12, 2004 Aug 12, 2004
Arsenic 1005 Inorganic Chemical 1 of 27 results Apr 2, 2014 Apr 2, 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 291–300 of 337 samples, newest first — collected August 16, 2007 to June 18, 2008. The summary above covers all 337.

28 results from the 10 samples listed here: 15 detected, 13 not detected. Across the whole record it is 467 of 1,623. 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 Marydell Water Association, every result from 291 to 300 of 337 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 18, 2008
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
080619-086NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jun 18, 2008, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jun 18, 2008, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 18, 2008, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Sep 5, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070906-022HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 5, 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 Sep 5, 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 Sep 5, 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 Sep 5, 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 Sep 5, 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 Sep 5, 2007, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2005 – Dec 31, 2007
Collected
Sep 5, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070906-020TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 5, 2007, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 5, 2007, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 5, 2007, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 5, 2007, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
0 This result is recorded as a detection, and the figure the agency wrote — "0.00" — is zero to the precision it was written to. Read the zero as "smaller than the written figure resolves", not as "none present". SDWIS holds a separate numeric concentration that Drinking Water Watch does not publish, so this endpoint does not carry it either; no more precise magnitude is available here. The agency recorded a value but no unit of measure for it. The unit is NOT inferable from the analyte: many analytes are reported in more than one unit — TTHM and HAA5 in both MG/L and UG/L — so there is no per-analyte default to fall back on. The number is published as it stands and must not be compared to a limit. The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Sep 5, 2007, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2007
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-286PB
Laboratory
MSDH Lab
0.0071 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0016 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-223PB
Laboratory
MSDH Lab
0.0071 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0016 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-224PB
Laboratory
MSDH Lab
0.0078 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0017 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-264PB
Laboratory
MSDH Lab
0.0065 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0014 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-285PB
Laboratory
MSDH Lab
0.007 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0015 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-262PB
Laboratory
MSDH Lab
0.0067 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0015 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
Collected
Aug 16, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070817-263PB
Laboratory
MSDH Lab
0.189 mg/l , sample collected Aug 16, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0005 mg/l , sample collected Aug 16, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008

Routine (10).