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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

MS0790005 , Old River Water Assn

44 of the 74 analytes this system has been tested for have been detected at least once, across 345 samples on record.

The other 30 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 345 samples on record, detections range from November 5, 2003 to June 22, 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 Old River Water Assn, 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 140 of 140 results Sep 19, 2007 Aug 27, 2025
Lead 1030 Inorganic Chemical 51 of 140 results Sep 20, 2007 Aug 27, 2025
Barium 1010 Inorganic Chemical 30 of 30 results Nov 5, 2003 Jun 22, 2026
Fluoride 1025 Inorganic Chemical 26 of 31 results Nov 5, 2003 Jun 22, 2026
TTHM 2950 Organic Chemical 16 of 18 results Sep 1, 2004 Sep 16, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 15 of 18 results Aug 5, 2010 May 19, 2026
Chloroform 2941 Organic Chemical 13 of 14 results Sep 19, 2007 Sep 16, 2025
Bromodichloromethane 2943 Organic Chemical 12 of 14 results Sep 19, 2007 Sep 16, 2025
Chromium 1020 Inorganic Chemical 12 of 30 results Apr 5, 2004 Mar 31, 2025
Dichloroacetic Acid 2451 Organic Chemical 10 of 14 results Sep 16, 2013 May 19, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 10 of 10 results Mar 15, 2012 Oct 10, 2012
Monochloroacetic Acid 2450 Organic Chemical 9 of 14 results Mar 11, 2024 May 19, 2026
Nickel 1036 Inorganic Chemical 9 of 29 results Apr 5, 2004 Nov 20, 2024
Sodium 1052 Inorganic Chemical 6 of 6 results Dec 30, 2008 Jun 22, 2026
Dibromochloromethane 2944 Organic Chemical 6 of 14 results Aug 5, 2010 Sep 16, 2025
Arsenic 1005 Inorganic Chemical 6 of 30 results Apr 2, 2014 Feb 23, 2022
Trichloroacetic Acid 2452 Organic Chemical 5 of 14 results May 5, 2025 May 19, 2026
Monobromoacetic Acid 2453 Organic Chemical 5 of 14 results Oct 26, 2020 May 19, 2026
Sulfate 1055 Inorganic Chemical 5 of 5 results Nov 5, 2003 Dec 30, 2008
Gross Alpha Particle Activity 4109 Radionuclide 4 of 4 results Jun 21, 2012 Jan 16, 2013
Xylenes, Total 2955 Organic Chemical 3 of 33 results Sep 6, 2012 Nov 6, 2013
Selenium 1045 Inorganic Chemical 3 of 30 results Apr 5, 2004 May 2, 2005
Cadmium 1015 Inorganic Chemical 2 of 30 results May 2, 2005 May 2, 2005
Nitrite 1041 Inorganic Chemical 1 of 50 results May 27, 2020 May 27, 2020
Ethylbenzene 2992 Organic Chemical 1 of 33 results May 8, 2013 May 8, 2013
Nitrate-Nitrite 1038 Inorganic Chemical 1 of 50 results Nov 7, 2012 Nov 7, 2012
Nitrate 1040 Inorganic Chemical 1 of 50 results Nov 7, 2012 Nov 7, 2012
Calcium 1016 Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Chloride 1017 Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Iron 1028 Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Magnesium 1031 Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Manganese 1032 Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Potassium 1042 Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Residue, Total, Filterable 1057 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Alkalinity, Caco3 Stability 1067 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Carbon Dioxide 1901 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Color 1905 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Hardness, Total (As Caco3) 1915 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
PH 1925 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Alkalinity, Total 1927 Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Iron, Field Result FEFD Inorganic Chemical 1 of 1 result Dec 30, 2008 Dec 30, 2008
Calculated Sodium NACA Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
PH, Field Result PHFD Water Quality 1 of 1 result Dec 30, 2008 Dec 30, 2008
Mercury 1035 Inorganic Chemical 1 of 30 results Apr 5, 2004 Apr 5, 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 281–290 of 345 samples, newest first — collected December 1, 2008 to August 5, 2010. The summary above covers all 345.

63 results from the 10 samples listed here: 29 detected, 34 not detected. Across the whole record it is 419 of 1,745. 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 Old River Water Assn, every result from 281 to 290 of 345 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 5, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100806-005HA
Laboratory
MSDH Lab
Not detected below 0.002 mg/l Minimum Reporting Level , sample collected Aug 5, 2010, sampling point MRT000 Monochloroacetic Acid 2450 EPA method 552.2 Not recorded
Not detected below 0.001 mg/l Minimum Reporting Level , sample collected Aug 5, 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 Aug 5, 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 Aug 5, 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 Aug 5, 2010, 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 Aug 5, 2010, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 Jan 1, 2008 – Dec 31, 2010
Collected
Aug 5, 2010
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
100806-005TH
Laboratory
MSDH Lab
1.14 ug/l , sample collected Aug 5, 2010, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 5, 2010, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.59 ug/l , sample collected Aug 5, 2010, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.5 ug/l , sample collected Aug 5, 2010, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
4.23 ug/l , sample collected Aug 5, 2010, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2008 – Dec 31, 2010
Collected
May 12, 2010
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
100513-023IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.004666 mg/l , sample collected May 12, 2010, sampling point TF081 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.125 mg/l , sample collected May 12, 2010, sampling point TF081 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.001153 mg/l , sample collected May 12, 2010, sampling point TF081 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF081 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
May 12, 2010
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
100513-022IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF080 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.350585 mg/l , sample collected May 12, 2010, sampling point TF080 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 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 May 12, 2010, sampling point TF080 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.11 mg/l , sample collected May 12, 2010, sampling point TF080 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF080 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.001119 mg/l , sample collected May 12, 2010, sampling point TF080 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected May 12, 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 May 12, 2010, sampling point TF080 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF080 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected May 12, 2010, sampling point TF080 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Apr 28, 2010
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
100429-011CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Apr 28, 2010, sampling point TF081 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Apr 28, 2010
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
100429-001CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected Apr 28, 2010, sampling point TF080 Cyanide 1024 EPA method QC10204001X Jan 1, 2008 – Dec 31, 2010
Collected
Jun 10, 2009
Sampling point
TF081 Treatment Plant T081
Sample type
Routine
Lab sample
090611-040NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 10, 2009, sampling point TF081 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 Jun 10, 2009, sampling point TF081 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Jun 10, 2009, sampling point TF081 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jun 10, 2009
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
090611-039NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Jun 10, 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 Jun 10, 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 Jun 10, 2009, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Dec 30, 2008
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
090106-003PC
Laboratory
MSDH Lab
42.6 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 Dec 30, 2008, sampling point WL001 Calcium 1016 EPA method 200.8 Not recorded
5.67 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 Dec 30, 2008, sampling point WL001 Chloride 1017 EPA method 300.0 Not recorded
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Dec 30, 2008, sampling point WL001 Fluoride 1025 EPA method 300.0 Not recorded
1.39 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 Dec 30, 2008, sampling point WL001 Iron 1028 EPA method 200.8 Not recorded
13.2 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 Dec 30, 2008, sampling point WL001 Magnesium 1031 EPA method 200.8 Not recorded
0.719 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 Dec 30, 2008, sampling point WL001 Manganese 1032 EPA method 200.8 Not recorded
4.56 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 Dec 30, 2008, sampling point WL001 Potassium 1042 EPA method 200.8 Not recorded
11.3 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 Dec 30, 2008, sampling point WL001 Sodium 1052 EPA method 200.8 Not recorded
6.14 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 Dec 30, 2008, sampling point WL001 Sulfate 1055 EPA method 300.0 Not recorded
222 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 Dec 30, 2008, sampling point WL001 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 Dec 30, 2008, sampling point WL001 Alkalinity, Caco3 Stability 1067 EPA method 2320B Not recorded
124 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 Dec 30, 2008, sampling point WL001 Carbon Dioxide 1901 EPA method CALCUL LAB Not recorded
10 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 Dec 30, 2008, sampling point WL001 Color 1905 EPA method 2120B Not recorded
161 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 Dec 30, 2008, sampling point WL001 Hardness, Total (As Caco3) 1915 EPA method CALCUL LAB Not recorded
7.7 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 Dec 30, 2008, sampling point WL001 PH 1925 EPA method 150.1 Not recorded
227 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 Dec 30, 2008, sampling point WL001 Alkalinity, Total 1927 EPA method 2320B Not recorded
1.4 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 Dec 30, 2008, sampling point WL001 Iron, Field Result FEFD EPA method 3500AL-D Not recorded
33 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 Dec 30, 2008, sampling point WL001 Calculated Sodium NACA EPA method CALCUL LAB Not recorded
6.6 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 Dec 30, 2008, sampling point WL001 PH, Field Result PHFD EPA method 3500AL-D Not recorded
Collected
Dec 1, 2008
Sampling point
TF080 Treatment Plant T080
Sample type
Routine
Lab sample
081202-036NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected Dec 1, 2008, sampling point TF080 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected Dec 1, 2008, sampling point TF080 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected Dec 1, 2008, sampling point TF080 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008

Routine (10).