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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

MS0390003 , Town of Monticello

35 of the 71 analytes this system has been tested for have been detected at least once, across 159 samples on record.

The other 36 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 159 samples on record, detections range from October 8, 2003 to September 17, 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 Town of Monticello, 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 57 of 57 results Aug 7, 2007 Aug 30, 2023
Lead 1030 Inorganic Chemical 15 of 57 results Aug 7, 2007 Aug 30, 2023
Barium 1010 Inorganic Chemical 10 of 10 results Oct 8, 2003 Mar 3, 2025
TTHM 2950 Organic Chemical 9 of 20 results Jun 30, 2004 Sep 17, 2025
Nickel 1036 Inorganic Chemical 7 of 10 results Mar 1, 2004 Mar 3, 2025
Sodium 1052 Inorganic Chemical 5 of 5 results May 13, 2010 Feb 11, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Combined Radium (-226 & -228) 4010 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Radium-226 4020 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Radium-228 4030 Radionuclide 5 of 5 results Dec 12, 2011 Jul 19, 2012
Fluoride 1025 Inorganic Chemical 5 of 12 results Oct 8, 2003 May 13, 2010
Arsenic 1005 Inorganic Chemical 4 of 10 results Mar 1, 2004 Mar 3, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 4 of 21 results Aug 16, 2007 Jun 29, 2023
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 8, 2003 May 13, 2010
Chloroform 2941 Organic Chemical 3 of 15 results Jun 5, 2024 Sep 17, 2025
Bromodichloromethane 2943 Organic Chemical 2 of 15 results Jun 5, 2024 Nov 12, 2024
Bromoform 2942 Organic Chemical 2 of 15 results Aug 28, 2024 Aug 28, 2024
Dibromochloromethane 2944 Organic Chemical 2 of 15 results Aug 28, 2024 Aug 28, 2024
Calcium 1016 Inorganic Chemical 2 of 2 results May 13, 2010 May 13, 2010
Chloride 1017 Inorganic Chemical 2 of 2 results May 13, 2010 May 13, 2010
Iron 1028 Inorganic Chemical 2 of 2 results May 13, 2010 May 13, 2010
Magnesium 1031 Inorganic Chemical 2 of 2 results May 13, 2010 May 13, 2010
Manganese 1032 Inorganic Chemical 2 of 2 results May 13, 2010 May 13, 2010
Potassium 1042 Inorganic Chemical 2 of 2 results May 13, 2010 May 13, 2010
Residue, Total, Filterable 1057 Water Quality 2 of 2 results May 13, 2010 May 13, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 2 of 2 results May 13, 2010 May 13, 2010
Carbon Dioxide 1901 Water Quality 2 of 2 results May 13, 2010 May 13, 2010
Hardness, Total (As Caco3) 1915 Water Quality 2 of 2 results May 13, 2010 May 13, 2010
Alkalinity, Total 1927 Water Quality 2 of 2 results May 13, 2010 May 13, 2010
Calculated Sodium NACA Water Quality 2 of 2 results May 13, 2010 May 13, 2010
PH, Field Result PHFD Water Quality 2 of 2 results May 13, 2010 May 13, 2010
Nitrite 1041 Inorganic Chemical 1 of 22 results Feb 22, 2023 Feb 22, 2023
Monobromoacetic Acid 2453 Organic Chemical 1 of 15 results Aug 13, 2019 Aug 13, 2019
Chromium 1020 Inorganic Chemical 1 of 10 results Apr 30, 2012 Apr 30, 2012
Dichloromethane 2964 Organic Chemical 1 of 12 results Aug 12, 2004 Aug 12, 2004

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 11–20 of 159 samples, newest first — collected August 30, 2023 to June 5, 2024. The summary above covers all 159.

46 results from the 10 samples listed here: 9 detected, 37 not detected. Across the whole record it is 179 of 792. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

We withheld the location of 6 sampling points below. The location on record identifies a private home, and we do not publish those. That is our decision, not the agency’s. The sampling point, its type and every result taken there are published unchanged.

Chemical and radiological sample results for Town of Monticello, every result from 11 to 20 of 159 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 5, 2024 08:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-107250-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Apr 1, 2024 – Jun 30, 2024
1.6 ug/l , sample collected Jun 5, 2024 08:45, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
0.84 ug/l , sample collected Jun 5, 2024 08:45, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jun 5, 2024 08:45, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
2.44 ug/l , sample collected Jun 5, 2024 08:45, sampling point SM1 TTHM 2950 EPA method 524.2 Apr 1, 2024 – Jun 30, 2024
Collected
May 14, 2024 16:08
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
HA-240515-007
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2024 16:08, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Not recorded
Collected
May 14, 2024 16:01
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
TH-240515-007
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected May 14, 2024 16:01, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Apr 2, 2024 14:10
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
NI-240403-033
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Apr 2, 2024 14:10, sampling point TF080 Nitrate-Nitrite 1038 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Apr 2, 2024 14:10, sampling point TF080 Nitrate 1040 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Apr 2, 2024 14:10, sampling point TF080 Nitrite 1041 EPA method QC10107041C Jan 1, 2024 – Dec 31, 2024
Collected
Mar 18, 2024 14:19
Sampling point
SM2 Location withheld
Sample type
Routine
Lab sample
810-97740-2
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Mar 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 14:19, sampling point SM2 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Mar 31, 2024
Collected
Mar 18, 2024 13:45
Sampling point
SM1 Location withheld
Sample type
Routine
Lab sample
810-97740-1
Laboratory
Eurofins Eaton Analytical South Bend in
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Dibromoacetic Acid 2454 EPA method 552.2 Not recorded
Not detected below 2 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2024 – Mar 31, 2024
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 Dibromochloromethane 2944 EPA method 524.2 Not recorded
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Mar 18, 2024 13:45, sampling point SM1 TTHM 2950 EPA method 524.2 Jan 1, 2024 – Mar 31, 2024
Collected
Aug 30, 2023 10:18
Sampling point
LC0010 Location withheld
Sample type
Routine
Lab sample
PB-230901-022
Laboratory
MSDH Lab
0.218 mg/l , sample collected Aug 30, 2023 10:18, sampling point LC0010 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
0.7 ug/l , sample collected Aug 30, 2023 10:18, sampling point LC0010 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 30, 2023 08:50
Sampling point
LC0005 Location withheld
Sample type
Routine
Lab sample
PB-230901-021
Laboratory
MSDH Lab
0.187 mg/l , sample collected Aug 30, 2023 08:50, sampling point LC0005 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 30, 2023 08:50, sampling point LC0005 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 30, 2023 07:08
Sampling point
LC0024 Location withheld
Sample type
Routine
Lab sample
PB-230901-020
Laboratory
MSDH Lab
0.0033 mg/l , sample collected Aug 30, 2023 07:08, sampling point LC0024 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
1.3 ug/l , sample collected Aug 30, 2023 07:08, sampling point LC0024 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Collected
Aug 30, 2023 07:08
Sampling point
LC0013 Location withheld
Sample type
Routine
Lab sample
PB-230901-019
Laboratory
MSDH Lab
0.0664 mg/l , sample collected Aug 30, 2023 07:08, sampling point LC0013 Copper, Free 1022 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Aug 30, 2023 07:08, sampling point LC0013 Lead 1030 EPA method 200.8 Jan 1, 2021 – Dec 31, 2023

Routine (10).