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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

MS0780010 , Tomnolen Water Assn, Inc

33 of the 72 analytes this system has been tested for have been detected at least once, across 199 samples on record.

The other 39 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 199 samples on record, detections range from November 3, 2003 to July 20, 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 Tomnolen Water Assn, Inc, 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 60 of 60 results Aug 30, 2007 Aug 15, 2023
Barium 1010 Inorganic Chemical 15 of 15 results Nov 3, 2003 Apr 2, 2025
Fluoride 1025 Inorganic Chemical 11 of 16 results Nov 3, 2003 Apr 2, 2025
Chromium 1020 Inorganic Chemical 11 of 15 results Nov 3, 2003 May 21, 2019
TTHM 2950 Organic Chemical 10 of 19 results Oct 29, 2007 Dec 16, 2025
Sodium 1052 Inorganic Chemical 7 of 7 results Dec 20, 2006 Jul 20, 2026
Lead 1030 Inorganic Chemical 7 of 60 results Aug 30, 2007 Sep 3, 2020
Dibromochloromethane 2944 Organic Chemical 5 of 14 results Oct 29, 2007 Dec 16, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Dec 8, 2011 Jul 13, 2012
Chloroform 2941 Organic Chemical 4 of 14 results Oct 31, 2013 Dec 16, 2025
Bromodichloromethane 2943 Organic Chemical 4 of 14 results Oct 27, 2020 Dec 16, 2025
Nickel 1036 Inorganic Chemical 4 of 15 results Apr 5, 2004 Apr 2, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 4 of 19 results Aug 2, 2010 Jul 30, 2024
Sulfate 1055 Inorganic Chemical 3 of 3 results Nov 3, 2003 Dec 20, 2006
Bromoform 2942 Organic Chemical 2 of 14 results Oct 29, 2007 Oct 20, 2025
Selenium 1045 Inorganic Chemical 2 of 15 results May 2, 2005 Mar 1, 2010
Monobromoacetic Acid 2453 Organic Chemical 1 of 13 results Oct 27, 2020 Oct 27, 2020
Calcium 1016 Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Chloride 1017 Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Iron 1028 Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Magnesium 1031 Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Manganese 1032 Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Potassium 1042 Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
Carbon Dioxide 1901 Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
Color 1905 Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
PH 1925 Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
Alkalinity, Total 1927 Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Dec 20, 2006 Dec 20, 2006
Calculated Sodium NACA Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
PH, Field Result PHFD Water Quality 1 of 1 result Dec 20, 2006 Dec 20, 2006
Cadmium 1015 Inorganic Chemical 1 of 15 results May 2, 2005 May 2, 2005

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 161–170 of 199 samples, newest first — collected September 18, 2007 to October 28, 2010. The summary above covers all 199.

59 results from the 10 samples listed here: 8 detected, 51 not detected. Across the whole record it is 171 of 1,020. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Units in this table

TTHM is recorded on this page in ug/l and mg/l. 1 mg/l = 1,000 ug/l.

Chemical and radiological sample results for Tomnolen Water Assn, Inc, every result from 161 to 170 of 199 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
Oct 28, 2010
Sampling point
TF102 Tment Plant T102
Sample type
Routine
Lab sample
101029-013VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Benzene 2990 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Toluene 2991 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Oct 28, 2010, sampling point TF102 Styrene 2996 EPA method 524.2 Oct 1, 2010 – Dec 31, 2010
Collected
Sep 27, 2010
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
100928-160NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Sep 27, 2010, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Sep 27, 2010, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Sep 27, 2010, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Collected
Aug 2, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100803-003HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 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 Aug 2, 2010, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 2, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100803-003TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 2, 2010, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 2, 2010, 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 Aug 2, 2010, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
Apr 26, 2010
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
100427-030CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Apr 26, 2010, sampling point TF101 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Mar 1, 2010
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
100302-053IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0142 mg/l , sample collected Mar 1, 2010, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0049 mg/l , sample collected Mar 1, 2010, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
0.0011 mg/l , sample collected Mar 1, 2010, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Mar 1, 2010, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Oct 19, 2009
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
091020-030NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Oct 19, 2009, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Oct 19, 2009, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Oct 19, 2009, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jul 28, 2008
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
080729-007NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF101 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 Jul 28, 2008, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jul 28, 2008, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Oct 29, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
071030-001TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 29, 2007, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
1.91 ug/l , sample collected Oct 29, 2007, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 29, 2007, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.38 ug/l , sample collected Oct 29, 2007, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
3.29 ug/l , sample collected Oct 29, 2007, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2007
Collected
Sep 18, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070919-014HA
Laboratory
MSDH Lab
Not detected below 0.006 mg/l Minimum Reporting Level , sample collected Sep 18, 2007, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2005 – Dec 31, 2007

Routine (10).