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
MS0810004 , East End Water Association
22 of the 57 analytes this system has been tested for have been detected at least once, across 235 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 235 samples on record, detections range from November 3, 2003 to April 9, 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.
| Analyte | Kind | Detected in | First detected | Last detected |
|---|---|---|---|---|
| Copper, Free 1022 | Inorganic Chemical | 80 of 80 results | Sep 18, 2007 | Aug 14, 2023 |
| Lead 1030 | Inorganic Chemical | 52 of 80 results | Sep 18, 2007 | Aug 14, 2023 |
| Barium 1010 | Inorganic Chemical | 20 of 20 results | Nov 3, 2003 | Apr 9, 2025 |
| Fluoride 1025 | Inorganic Chemical | 18 of 20 results | Nov 3, 2003 | Apr 9, 2025 |
| Chromium 1020 | Inorganic Chemical | 11 of 20 results | Nov 3, 2003 | Apr 9, 2025 |
| Gross Alpha, Incl. Radon & U 4002 | Radionuclide | 10 of 10 results | Dec 12, 2011 | Jul 20, 2012 |
| Total Haloacetic Acids (Haa5) 2456 | Organic Chemical | 7 of 8 results | Sep 13, 2004 | Dec 6, 2022 |
| TTHM 2950 | Organic Chemical | 7 of 9 results | Sep 13, 2004 | Dec 6, 2022 |
| Nickel 1036 | Inorganic Chemical | 6 of 20 results | May 12, 2010 | Apr 9, 2025 |
| Sodium 1052 | Inorganic Chemical | 4 of 4 results | Sep 24, 2019 | Mar 20, 2023 |
| Xylenes, Total 2955 | Organic Chemical | 4 of 30 results | Sep 7, 2004 | Jul 22, 2010 |
| Dichloroacetic Acid 2451 | Organic Chemical | 3 of 3 results | Jun 22, 2011 | Aug 15, 2017 |
| Trichloroacetic Acid 2452 | Organic Chemical | 3 of 3 results | Jun 22, 2011 | Aug 15, 2017 |
| Chloroform 2941 | Organic Chemical | 3 of 4 results | Jun 22, 2011 | Aug 15, 2017 |
| Bromodichloromethane 2943 | Organic Chemical | 3 of 4 results | Jun 22, 2011 | Aug 15, 2017 |
| Dibromochloromethane 2944 | Organic Chemical | 3 of 4 results | Jun 22, 2011 | Aug 15, 2017 |
| Nitrate 1040 | Inorganic Chemical | 2 of 42 results | Aug 17, 2006 | Aug 17, 2006 |
| Cadmium 1015 | Inorganic Chemical | 2 of 20 results | May 2, 2005 | May 2, 2005 |
| Selenium 1045 | Inorganic Chemical | 2 of 20 results | May 2, 2005 | May 2, 2005 |
| Sulfate 1055 | Inorganic Chemical | 2 of 4 results | Nov 3, 2003 | Nov 3, 2003 |
| Cyanide 1024 | Inorganic Chemical | 1 of 22 results | Oct 21, 2013 | Oct 21, 2013 |
| Ethylbenzene 2992 | Organic Chemical | 1 of 30 results | Sep 7, 2004 | Sep 7, 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 191–200 of 235 samples, newest first — collected April 19, 2006 to September 18, 2007. The summary above covers all 235.
44 results from the 10 samples listed here: 9 detected, 35 not detected. Across the whole record it is 244 of 1,264. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.
| Result | Analyte | Monitoring period |
|---|---|---|
|
||
| 0.0143 mg/l , sample collected Sep 18, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0006 mg/l , sample collected Sep 18, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.1113 mg/l , sample collected Sep 18, 2007, sampling point DS000 | Copper, Free 1022 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
| 0.0015 mg/l , sample collected Sep 18, 2007, sampling point DS000 | Lead 1030 EPA method 200.8 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | 1,2,4-Trichlorobenzene 2378 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Cis-1,2-Dichloroethylene 2380 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| 1.29 ug/l , sample collected Sep 18, 2007, sampling point TF102 | Xylenes, Total 2955 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Dichloromethane 2964 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | O-Dichlorobenzene 2968 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | P-Dichlorobenzene 2969 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Vinyl Chloride 2976 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | 1,1-Dichloroethylene 2977 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Trans-1,2-Dichloroethylene 2979 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | 1,2-Dichloroethane 2980 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | 1,1,1-Trichloroethane 2981 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Carbon Tetrachloride 2982 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | 1,2-Dichloropropane 2983 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Trichloroethylene 2984 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | 1,1,2-Trichloroethane 2985 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Tetrachloroethylene 2987 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Chlorobenzene 2989 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Benzene 2990 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Toluene 2991 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Ethylbenzene 2992 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 18, 2007, sampling point TF102 | Styrene 2996 EPA method 524.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 15, 2007, sampling point TF102 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Aug 15, 2007, sampling point TF102 | Nitrate 1040 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 15, 2007, sampling point TF102 | Nitrite 1041 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 15, 2007, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Aug 15, 2007, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 15, 2007, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2007 – Dec 31, 2007 |
|
||
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 16, 2006, sampling point MRT000 | Chloroform 2941 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 16, 2006, sampling point MRT000 | Bromoform 2942 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 16, 2006, sampling point MRT000 | Bromodichloromethane 2943 EPA method 551.1 | Not recorded |
| Not detected below 1 ug/l Minimum Reporting Level , sample collected Oct 16, 2006, sampling point MRT000 | Dibromochloromethane 2944 EPA method 551.1 | 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 Oct 16, 2006, sampling point MRT000 | TTHM 2950 EPA method 551.1 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| 0.0049 mg/l 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 Oct 5, 2006, sampling point MRT000 | Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 | Jan 1, 2006 – Dec 31, 2008 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 17, 2006, sampling point TF102 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| 0.08 mg/l , sample collected Aug 17, 2006, sampling point TF102 | Nitrate 1040 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 17, 2006, sampling point TF102 | Nitrite 1041 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Aug 17, 2006, sampling point TF101 | Nitrate-Nitrite 1038 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| 0.08 mg/l , sample collected Aug 17, 2006, sampling point TF101 | Nitrate 1040 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
| Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Aug 17, 2006, sampling point TF101 | Nitrite 1041 EPA method 353.2 | Jan 1, 2006 – Dec 31, 2006 |
|
||
| Not detected below 0.005 mg/l Minimum Reporting Level , sample collected Apr 19, 2006, sampling point TF102 | Cyanide 1024 EPA method QC10204001X | Jan 1, 2005 – Dec 31, 2007 |
-
- Collected
- Sep 18, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070919-158PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.0143 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0006 mg/l
-
- Collected
- Sep 18, 2007
- Sampling point
- DS000 Distribution
- Sample type
- Routine
- Lab sample
- 070919-157PB
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Copper, Free 1022 EPA method 200.8
- Result
- 0.1113 mg/l
-
Lead 1030 EPA method 200.8
- Result
- 0.0015 mg/l
-
- Collected
- Sep 18, 2007
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 070919-013VO
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
1,2,4-Trichlorobenzene 2378 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Cis-1,2-Dichloroethylene 2380 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Xylenes, Total 2955 EPA method 524.2
- Result
- 1.29 ug/l
-
Dichloromethane 2964 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
O-Dichlorobenzene 2968 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
P-Dichlorobenzene 2969 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Vinyl Chloride 2976 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
1,1-Dichloroethylene 2977 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Trans-1,2-Dichloroethylene 2979 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
1,2-Dichloroethane 2980 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
1,1,1-Trichloroethane 2981 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Carbon Tetrachloride 2982 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
1,2-Dichloropropane 2983 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Trichloroethylene 2984 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
1,1,2-Trichloroethane 2985 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Tetrachloroethylene 2987 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Chlorobenzene 2989 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Benzene 2990 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Toluene 2991 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Ethylbenzene 2992 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
Styrene 2996 EPA method 524.2
- Result
- Not detected below 0.0005 mg/l Method Detection Limit
-
- Collected
- Aug 15, 2007
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 070816-006NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Aug 15, 2007
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 070816-004NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2007 – Dec 31, 2007
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- Not detected below 0.08 mg/l Minimum Reporting Level
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Oct 16, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 061017-002TH
- Laboratory
- MSDH Lab
-
Chloroform 2941 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromoform 2942 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Bromodichloromethane 2943 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
Dibromochloromethane 2944 EPA method 551.1
- Result
- Not detected below 1 ug/l Minimum Reporting Level
- Monitoring period
- Not recorded
-
TTHM 2950 EPA method 551.1
- Result
- 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.
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
- Collected
- Oct 5, 2006
- Sampling point
- MRT000 Max. Res. Time
- Sample type
- Routine
- Lab sample
- 061006-008HA
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2008
-
Total Haloacetic Acids (Haa5) 2456 EPA method 552.2
- Result
- 0.0049 mg/l 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.
-
- Collected
- Aug 17, 2006
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 060818-038NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- 0.08 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Aug 17, 2006
- Sampling point
- TF101 Treatment Plant T101
- Sample type
- Routine
- Lab sample
- 060818-039NI
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2006 – Dec 31, 2006
-
Nitrate-Nitrite 1038 EPA method 353.2
- Result
- Not detected below 0.1 mg/l Minimum Reporting Level
-
Nitrate 1040 EPA method 353.2
- Result
- 0.08 mg/l
-
Nitrite 1041 EPA method 353.2
- Result
- Not detected below 0.02 mg/l Minimum Reporting Level
-
- Collected
- Apr 19, 2006
- Sampling point
- TF102 Treatment Plant T102
- Sample type
- Routine
- Lab sample
- 060420-008CN
- Laboratory
- MSDH Lab
- Monitoring period
- Jan 1, 2005 – Dec 31, 2007
-
Cyanide 1024 EPA method QC10204001X
- Result
- Not detected below 0.005 mg/l Minimum Reporting Level
Routine (10).