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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

MS0480007 , Hamilton Water District

20 of the 57 analytes this system has been tested for have been detected at least once, across 450 samples on record.

The other 37 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 450 samples on record, detections range from October 20, 2003 to September 22, 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 Hamilton Water District, 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 283 results Sep 5, 2007 Jul 31, 2024
Lead 1030 Inorganic Chemical 59 of 283 results Sep 5, 2007 Jul 20, 2021
Barium 1010 Inorganic Chemical 21 of 21 results Oct 20, 2003 Mar 10, 2025
Nickel 1036 Inorganic Chemical 18 of 21 results Oct 20, 2003 Mar 10, 2025
TTHM 2950 Organic Chemical 14 of 17 results Aug 29, 2007 Sep 22, 2025
Chloroform 2941 Organic Chemical 10 of 13 results Aug 12, 2013 Sep 22, 2025
Bromodichloromethane 2943 Organic Chemical 10 of 13 results Aug 12, 2013 Sep 22, 2025
Dibromochloromethane 2944 Organic Chemical 10 of 13 results Aug 12, 2013 Sep 22, 2025
Chromium 1020 Inorganic Chemical 9 of 21 results Oct 20, 2003 Feb 5, 2024
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 20 results Jul 8, 2010 May 22, 2024
Dichloroacetic Acid 2451 Organic Chemical 6 of 15 results Jul 8, 2010 Sep 22, 2025
Sodium 1052 Inorganic Chemical 6 of 6 results Sep 16, 2019 Feb 25, 2025
Sulfate 1055 Inorganic Chemical 6 of 6 results Oct 20, 2003 Mar 10, 2004
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Mar 12, 2012 Oct 11, 2012
Beryllium, Total 1075 Inorganic Chemical 5 of 21 results Oct 20, 2003 Jan 13, 2010
Bromoform 2942 Organic Chemical 1 of 13 results Sep 22, 2025 Sep 22, 2025
Fluoride 1025 Inorganic Chemical 1 of 21 results Mar 10, 2025 Mar 10, 2025
Selenium 1045 Inorganic Chemical 1 of 21 results Jan 13, 2010 Jan 13, 2010
Thallium, Total 1085 Inorganic Chemical 1 of 21 results Jan 13, 2010 Jan 13, 2010
Arsenic 1005 Inorganic Chemical 1 of 21 results Oct 20, 2003 Oct 20, 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 361–370 of 450 samples, newest first — collected January 13, 2010 to August 18, 2010. The summary above covers all 450.

33 results from the 10 samples listed here: 15 detected, 18 not detected. Across the whole record it is 472 of 1,593. 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 Hamilton Water District, every result from 361 to 370 of 450 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 18, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100827-070PB
Laboratory
MSDH Lab
0.8728 mg/l , sample collected Aug 18, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0005 mg/l , sample collected Aug 18, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 18, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100827-056PB
Laboratory
MSDH Lab
0.0222 mg/l , sample collected Aug 18, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0007 mg/l , sample collected Aug 18, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 18, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100827-054PB
Laboratory
MSDH Lab
0.8844 mg/l , sample collected Aug 18, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0032 mg/l , sample collected Aug 18, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 17, 2010
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
100827-055PB
Laboratory
MSDH Lab
0.7701 mg/l , sample collected Aug 17, 2010, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.001 mg/l , sample collected Aug 17, 2010, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Jul 8, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100709-001TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 8, 2010, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 8, 2010, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 8, 2010, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jul 8, 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 Jul 8, 2010, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
Jul 8, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100709-001HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Jul 8, 2010, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
0.001 mg/l , sample collected Jul 8, 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 Jul 8, 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 Jul 8, 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 Jul 8, 2010, sampling point MRT000 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
0 mg/l 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. , sample collected Jul 8, 2010, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2008 – Dec 31, 2010
Collected
Jan 20, 2010
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
100121-029CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Jan 20, 2010, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Jan 20, 2010
Sampling point
TF082 Treatment Plant T082
Sample type
Routine
Lab sample
100121-028CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Jan 20, 2010, sampling point TF082 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Jan 20, 2010
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
100121-005CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Jan 20, 2010, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Jan 13, 2010
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
100120-011IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2010, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0821 mg/l , sample collected Jan 13, 2010, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0001 mg/l Minimum Reporting Level , sample collected Jan 13, 2010, sampling point TF080 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2010, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jan 13, 2010, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0002 mg/l Minimum Reporting Level , sample collected Jan 13, 2010, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0007 mg/l , sample collected Jan 13, 2010, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
0.002 mg/l , sample collected Jan 13, 2010, sampling point TF080 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 13, 2010, sampling point TF080 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 Jan 13, 2010, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.0005 mg/l , sample collected Jan 13, 2010, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010

Routine (10).