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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

MS0340004 , Erata Water Association

33 of the 72 analytes this system has been tested for have been detected at least once, across 165 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 165 samples on record, detections range from September 24, 2003 to July 27, 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 Erata Water Association, 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 62 of 71 results Jul 25, 2007 Jul 27, 2026
Lead 1030 Inorganic Chemical 50 of 71 results Jul 25, 2007 Aug 29, 2023
Barium 1010 Inorganic Chemical 10 of 10 results Sep 24, 2003 Feb 24, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 8 of 19 results Aug 7, 2007 Nov 20, 2024
Fluoride 1025 Inorganic Chemical 7 of 11 results Feb 23, 2004 Aug 29, 2022
TTHM 2950 Organic Chemical 6 of 20 results Jun 14, 2004 Jun 3, 2024
Nickel 1036 Inorganic Chemical 5 of 10 results Jan 12, 2009 Aug 29, 2022
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 5 results Dec 14, 2011 Jul 17, 2012
Sodium 1052 Inorganic Chemical 4 of 4 results Jul 6, 2010 Feb 3, 2025
Monochloroacetic Acid 2450 Organic Chemical 4 of 15 results Jul 1, 2015 Nov 20, 2024
Sulfate 1055 Inorganic Chemical 3 of 3 results Sep 24, 2003 Jul 6, 2010
Dibromochloromethane 2944 Organic Chemical 2 of 16 results Jun 3, 2024 Jun 3, 2024
Monobromoacetic Acid 2453 Organic Chemical 2 of 15 results Aug 14, 2018 Jun 15, 2020
Dichloroacetic Acid 2451 Organic Chemical 1 of 15 results Jun 15, 2020 Jun 15, 2020
Calcium 1016 Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Chloride 1017 Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Iron 1028 Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Magnesium 1031 Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Manganese 1032 Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Potassium 1042 Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Carbon Dioxide 1901 Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Color 1905 Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Alkalinity, Total 1927 Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Jul 6, 2010 Jul 6, 2010
Calculated Sodium NACA Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
PH, Field Result PHFD Water Quality 1 of 1 result Jul 6, 2010 Jul 6, 2010
Dichloromethane 2964 Organic Chemical 1 of 8 results Aug 2, 2004 Aug 2, 2004
Chromium 1020 Inorganic Chemical 1 of 10 results Feb 23, 2004 Feb 23, 2004
Mercury 1035 Inorganic Chemical 1 of 10 results Feb 23, 2004 Feb 23, 2004
Selenium 1045 Inorganic Chemical 1 of 10 results Feb 23, 2004 Feb 23, 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 121–130 of 165 samples, newest first — collected April 20, 2009 to July 27, 2011. The summary above covers all 165.

45 results from the 10 samples listed here: 26 detected, 19 not detected. Across the whole record it is 188 of 722. 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 Erata Water Association, every result from 121 to 130 of 165 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 27, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110728-051PB
Laboratory
MSDH Lab
0.0356 mg/l , sample collected Jul 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0013 mg/l , sample collected Jul 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 27, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110728-050PB
Laboratory
MSDH Lab
0.1605 mg/l , sample collected Jul 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0016 mg/l , sample collected Jul 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jul 27, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110728-049PB
Laboratory
MSDH Lab
0.0726 mg/l , sample collected Jul 27, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0024 mg/l , sample collected Jul 27, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Feb 14, 2011
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
110215-084NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Feb 14, 2011, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Feb 14, 2011, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Feb 14, 2011, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Collected
Jul 6, 2010
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
100707-071NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jul 6, 2010, sampling point TF080 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 Jul 6, 2010, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jul 6, 2010, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2010 – Dec 31, 2010
Collected
Jul 6, 2010
Sampling point
WL005
Sample type
Routine
Lab sample
100707-002PC
Laboratory
MSDH Lab
5.07 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 Jul 6, 2010, sampling point WL005 Calcium 1016 EPA method 200.8 Not recorded
6.21 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 Jul 6, 2010, sampling point WL005 Chloride 1017 EPA method 300.0 Not recorded
0.11 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 Jul 6, 2010, sampling point WL005 Fluoride 1025 EPA method 380-75WE Not recorded
0.511 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 Jul 6, 2010, sampling point WL005 Iron 1028 EPA method 200.8 Not recorded
1.79 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 Jul 6, 2010, sampling point WL005 Magnesium 1031 EPA method 200.8 Not recorded
0.026 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 Jul 6, 2010, sampling point WL005 Manganese 1032 EPA method 200.8 Not recorded
1.89 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 Jul 6, 2010, sampling point WL005 Potassium 1042 EPA method 200.8 Not recorded
11.1 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 Jul 6, 2010, sampling point WL005 Sodium 1052 EPA method 200.8 Not recorded
8 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 Jul 6, 2010, sampling point WL005 Sulfate 1055 EPA method 300.0 Not recorded
60 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 Jul 6, 2010, sampling point WL005 Residue, Total, Filterable 1057 EPA method CALCUL LAB Not recorded
0 mg/l This result is recorded as a detection, and the figure the agency wrote — "0" — 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 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 6, 2010, sampling point WL005 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
19 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 Jul 6, 2010, sampling point WL005 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
25 units 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 6, 2010, sampling point WL005 Color 1905 EPA method 2120B Not recorded
20.2 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 Jul 6, 2010, sampling point WL005 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
42.7 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 Jul 6, 2010, sampling point WL005 Alkalinity, Total 1927 EPA method 2320B Not recorded
1 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 Jul 6, 2010, sampling point WL005 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
16.8 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 Jul 6, 2010, sampling point WL005 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
6.7 ph 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 6, 2010, sampling point WL005 PH, Field Result PHFD EPA method 3500AL-D Not recorded
Collected
Sep 23, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090924-016TH
Laboratory
MSDH Lab
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Sep 23, 2009, 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 Sep 23, 2009, sampling point MRT000 TTHM 2950 EPA method 524.2 Not recorded
Collected
Sep 23, 2009
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
090924-005HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Dichloroacetic Acid 2451 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Trichloroacetic Acid 2452 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point MRT000 Monobromoacetic Acid 2453 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Sep 23, 2009, 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 Sep 23, 2009, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Not recorded
Collected
Sep 23, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090924-036CN
Laboratory
MSDH Lab
Not detected below 0.015 mg/l Minimum Reporting Level , sample collected Sep 23, 2009, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Apr 20, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090421-029NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF080 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 Apr 20, 2009, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Apr 20, 2009, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009

Routine (10).