Chemical and radiological sample results

MS0500004 , Central W/A-East Side

40 of the 74 analytes this system has been tested for have been detected at least once, across 279 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 279 samples on record, detections range from October 8, 2003 to May 11, 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 Central W/A-East Side, 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	162 of 162 results	Jun 24, 2004	Aug 6, 2024
Lead 1030	Inorganic Chemical	58 of 162 results	Jun 24, 2004	Aug 6, 2024
TTHM 2950	Organic Chemical	18 of 18 results	Jul 21, 2004	Apr 29, 2025
Barium 1010	Inorganic Chemical	14 of 14 results	Oct 8, 2003	Mar 18, 2025
Chloroform 2941	Organic Chemical	13 of 13 results	Sep 26, 2007	Apr 29, 2025
Bromodichloromethane 2943	Organic Chemical	13 of 13 results	Sep 26, 2007	Apr 29, 2025
Total Haloacetic Acids (Haa5) 2456	Organic Chemical	12 of 19 results	Jun 14, 2010	May 11, 2026
Dichloroacetic Acid 2451	Organic Chemical	11 of 14 results	Aug 30, 2007	May 11, 2026
Nickel 1036	Inorganic Chemical	11 of 14 results	Mar 8, 2004	Mar 18, 2025
Dibromochloromethane 2944	Organic Chemical	10 of 13 results	Jun 14, 2010	Apr 29, 2025
Trichloroacetic Acid 2452	Organic Chemical	8 of 14 results	Aug 30, 2007	May 11, 2026
Sulfate 1055	Inorganic Chemical	8 of 8 results	Oct 8, 2003	Apr 7, 2017
Sodium 1052	Inorganic Chemical	7 of 7 results	May 17, 2016	Feb 25, 2025
Gross Alpha, Incl. Radon & U 4002	Radionuclide	5 of 5 results	Mar 12, 2012	Oct 9, 2012
Calcium 1016	Inorganic Chemical	4 of 4 results	May 17, 2016	Apr 7, 2017
Chloride 1017	Inorganic Chemical	4 of 4 results	May 17, 2016	Apr 7, 2017
Fluoride 1025	Inorganic Chemical	4 of 18 results	Oct 8, 2003	Apr 7, 2017
Iron 1028	Inorganic Chemical	4 of 4 results	May 17, 2016	Apr 7, 2017
Magnesium 1031	Inorganic Chemical	4 of 4 results	May 17, 2016	Apr 7, 2017
Manganese 1032	Inorganic Chemical	4 of 4 results	May 17, 2016	Apr 7, 2017
Potassium 1042	Inorganic Chemical	4 of 4 results	May 17, 2016	Apr 7, 2017
Residue, Total, Filterable 1057	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
Carbon Dioxide 1901	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
Color 1905	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
Hardness, Total (As Caco3) 1915	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
Alkalinity, Total 1927	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
Calculated Sodium NACA	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
PH, Field Result PHFD	Water Quality	4 of 4 results	May 17, 2016	Apr 7, 2017
Iron, Field Result FEFD	Inorganic Chemical	3 of 3 results	May 17, 2016	Apr 7, 2017
Selenium 1045	Inorganic Chemical	3 of 14 results	Oct 8, 2003	Apr 4, 2005
Monobromoacetic Acid 2453	Organic Chemical	1 of 14 results	Sep 21, 2020	Sep 21, 2020
Gross Alpha, Excl. Radon & U 4000	Radionuclide	1 of 1 result	Mar 1, 2010	Mar 1, 2010
Combined Radium (-226 & -228) 4010	Radionuclide	1 of 6 results	Mar 1, 2010	Mar 1, 2010
Radium-226 4020	Radionuclide	1 of 6 results	Mar 1, 2010	Mar 1, 2010
Radium-228 4030	Radionuclide	1 of 6 results	Mar 1, 2010	Mar 1, 2010
Gross Beta Particle Activity 4100	Radionuclide	1 of 1 result	Mar 1, 2010	Mar 1, 2010
Gross Alpha Particle Activity 4109	Radionuclide	1 of 1 result	Mar 1, 2010	Mar 1, 2010
Chromium 1020	Inorganic Chemical	1 of 14 results	Apr 4, 2005	Apr 4, 2005
Cadmium 1015	Inorganic Chemical	1 of 14 results	Mar 8, 2004	Mar 8, 2004
Mercury 1035	Inorganic Chemical	1 of 14 results	Mar 8, 2004	Mar 8, 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 41–50 of 279 samples, newest first — collected July 20, 2021 to July 26, 2022. The summary above covers all 279.

34 results from the 10 samples listed here: 8 detected, 26 not detected. Across the whole record it is 422 of 1,098. 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 2 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 Central W/A-East Side, every result from 41 to 50 of 279 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 Jul 26, 2022 13:50 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample VO-220727-016 Laboratory MSDH Lab
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	1,2,4-Trichlorobenzene 2378 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Cis-1,2-Dichloroethylene 2380 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Xylenes, Total 2955 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Dichloromethane 2964 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	O-Dichlorobenzene 2968 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	P-Dichlorobenzene 2969 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Vinyl Chloride 2976 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	1,1-Dichloroethylene 2977 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Trans-1,2-Dichloroethylene 2979 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	1,2-Dichloroethane 2980 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	1,1,1-Trichloroethane 2981 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Carbon Tetrachloride 2982 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	1,2-Dichloropropane 2983 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Trichloroethylene 2984 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	1,1,2-Trichloroethane 2985 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Tetrachloroethylene 2987 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Chlorobenzene 2989 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Benzene 2990 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Toluene 2991 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Ethylbenzene 2992 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 26, 2022 13:50, sampling point TF080	Styrene 2996 EPA method 524.2	Jan 1, 2017 – Dec 31, 2022
Collected Jun 6, 2022 13:20 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-220607-005 Laboratory MSDH Lab
4.08 ug/l , sample collected Jun 6, 2022 13:20, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Not recorded
Collected Jun 6, 2022 13:20 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-220607-005 Laboratory MSDH Lab
3.14 ug/l , sample collected Jun 6, 2022 13:20, sampling point MRT000	TTHM 2950 EPA method 524.2	Not recorded
Collected May 16, 2022 13:45 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample CN-220517-030 Laboratory MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected May 16, 2022 13:45, sampling point TF080	Cyanide 1024 EPA method QC10204001X	Jan 1, 2020 – Dec 31, 2022
Collected Mar 1, 2022 14:51 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NA-220302-031 Laboratory MSDH Lab
19.3 mg/l , sample collected Mar 1, 2022 14:51, sampling point TF080	Sodium 1052 EPA method 200.7	Not recorded
Collected Mar 1, 2022 14:50 Sampling point TF080 Treatment Plant T080 Sample type Routine Lab sample NI-220302-031 Laboratory MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 14:50, sampling point TF080	Nitrate-Nitrite 1038 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 14:50, sampling point TF080	Nitrate 1040 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Mar 1, 2022 14:50, sampling point TF080	Nitrite 1041 EPA method QC10107041C	Jan 1, 2022 – Dec 31, 2022
Collected Sep 27, 2021 14:25 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample HA-210928-010 Laboratory MSDH Lab
2.25 ug/l , sample collected Sep 27, 2021 14:25, sampling point MRT000	Total Haloacetic Acids (Haa5) 2456 EPA method 552.2	Jan 1, 2021 – Dec 31, 2021
Collected Sep 27, 2021 14:25 Sampling point MRT000 Max. Res. Time Sample type Routine Lab sample TH-210928-010 Laboratory MSDH Lab
4.58 ug/l , sample collected Sep 27, 2021 14:25, sampling point MRT000	TTHM 2950 EPA method 524.2	Jan 1, 2021 – Dec 31, 2021
Collected Jul 20, 2021 06:30 Sampling point LC0022 Location withheld Sample type Routine Lab sample PB-210721-083 Laboratory MSDH Lab
0.109 mg/l , sample collected Jul 20, 2021 06:30, sampling point LC0022	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Not detected below 0.5 ug/l Minimum Reporting Level , sample collected Jul 20, 2021 06:30, sampling point LC0022	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
Collected Jul 20, 2021 07:00 Sampling point LC0025 Location withheld Sample type Routine Lab sample PB-210721-082 Laboratory MSDH Lab
0.111 mg/l , sample collected Jul 20, 2021 07:00, sampling point LC0025	Copper, Free 1022 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021
7.5 ug/l , sample collected Jul 20, 2021 07:00, sampling point LC0025	Lead 1030 EPA method 200.8	Jan 1, 2019 – Dec 31, 2021

Collected
Jul 26, 2022 13:50

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
VO-220727-016

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2017 – Dec 31, 2022
- 1,2,4-Trichlorobenzene 2378 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Cis-1,2-Dichloroethylene 2380 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Xylenes, Total 2955 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Dichloromethane 2964 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- O-Dichlorobenzene 2968 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- P-Dichlorobenzene 2969 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Vinyl Chloride 2976 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1-Dichloroethylene 2977 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trans-1,2-Dichloroethylene 2979 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloroethane 2980 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,1-Trichloroethane 2981 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Carbon Tetrachloride 2982 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,2-Dichloropropane 2983 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Trichloroethylene 2984 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- 1,1,2-Trichloroethane 2985 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Tetrachloroethylene 2987 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Chlorobenzene 2989 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Benzene 2990 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Toluene 2991 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Ethylbenzene 2992 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
- Styrene 2996 EPA method 524.2
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Jun 6, 2022 13:20

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-220607-005

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  4.08 ug/l
Collected
Jun 6, 2022 13:20

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-220607-005

Laboratory
MSDH Lab

Monitoring period
Not recorded
- TTHM 2950 EPA method 524.2
  
  Result
  3.14 ug/l
Collected
May 16, 2022 13:45

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
CN-220517-030

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2020 – Dec 31, 2022
- Cyanide 1024 EPA method QC10204001X
  
  Result
  Not detected below 0.015 mg/l Minimum Reporting Level
Collected
Mar 1, 2022 14:51

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NA-220302-031

Laboratory
MSDH Lab

Monitoring period
Not recorded
- Sodium 1052 EPA method 200.7
  
  Result
  19.3 mg/l
Collected
Mar 1, 2022 14:50

Sampling point
TF080 Treatment Plant T080

Sample type
Routine

Lab sample
NI-220302-031

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2022 – Dec 31, 2022
- Nitrate-Nitrite 1038 EPA method QC10107041C
  
  Result
  Not detected below 0.1 mg/l Minimum Reporting Level
- Nitrate 1040 EPA method QC10107041C
  
  Result
  Not detected below 0.08 mg/l Minimum Reporting Level
- Nitrite 1041 EPA method QC10107041C
  
  Result
  Not detected below 0.02 mg/l Minimum Reporting Level
Collected
Sep 27, 2021 14:25

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
HA-210928-010

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
  
  Result
  2.25 ug/l
Collected
Sep 27, 2021 14:25

Sampling point
MRT000 Max. Res. Time

Sample type
Routine

Lab sample
TH-210928-010

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2021 – Dec 31, 2021
- TTHM 2950 EPA method 524.2
  
  Result
  4.58 ug/l
Collected
Jul 20, 2021 06:30

Sampling point
LC0022 Location withheld

Sample type
Routine

Lab sample
PB-210721-083

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.109 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  Not detected below 0.5 ug/l Minimum Reporting Level
Collected
Jul 20, 2021 07:00

Sampling point
LC0025 Location withheld

Sample type
Routine

Lab sample
PB-210721-082

Laboratory
MSDH Lab

Monitoring period
Jan 1, 2019 – Dec 31, 2021
- Copper, Free 1022 EPA method 200.8
  
  Result
  0.111 mg/l
- Lead 1030 EPA method 200.8
  
  Result
  7.5 ug/l

Routine (10).