{"id":989689,"date":"2022-11-16T15:36:19","date_gmt":"2022-11-16T18:36:19","guid":{"rendered":"https:\/\/biogroup.com.ar\/underground-water\/"},"modified":"2026-05-19T15:47:27","modified_gmt":"2026-05-19T18:47:27","slug":"underground-water","status":"publish","type":"page","link":"https:\/\/biogroup.com.ar\/en\/underground-water\/","title":{"rendered":"Underground Water"},"content":{"rendered":"\t\t
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\n \ud83d\udca7 Monitoring Wells \u00b7 Aquifer Sampling \u00b7 Glyphosate \u00b7 Potability \u00b7 HPLC-MS\/MS \u00b7 Table 2 Decree 831\/93\n <\/div>\n

\n Underground Water<\/span>\n <\/h1>\n

\n Groundwater monitoring well construction, aquifer surveillance, drinking water\n potability and contaminated site groundwater characterisation.\n <\/p>\n

\n Biogroup provides a complete groundwater service \u2014 from the \n design and construction of monitoring wells (phreatimeters)<\/strong> and hydraulic\n levelling to representative low-flow sampling<\/strong>,\n full analytical characterisation per Decree 831\/93\n Table 2<\/strong>, and specialised analysis of pesticides and herbicides by\n HPLC-MS\/MS \u2014 including glyphosate and AMPA at sub-ppb detection limits.\n <\/p>\n

\n Whether monitoring a production well for potability compliance, characterising a\n contaminated plume at a Phase II site investigation, or maintaining a long-term\n aquifer surveillance network \u2014 Biogroup integrates field work and in-house\n analytical capability into a single, accountable service.\n <\/p>\n

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Well construction<\/div>\n
Any geological formation<\/div><\/div>\n
Glyphosate<\/div>\n
HPLC-MS\/MS \u00b7 sub-ppb<\/div><\/div>\n
Table 2<\/div>\n
Decree 831\/93 full panel<\/div><\/div>\n
+35 years<\/div>\n
Groundwater expertise<\/div><\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\ud83d\udd29<\/div>\n
\n Field-to-lab integration<\/div>\n
Biogroup installs the\n phreatimeters, collects the samples and analyses them in-house \u2014 eliminating the\n chain of custody breaks and communication failures that arise when field crews and\n laboratories are separate organisations. One team, one accountable result.<\/div>\n <\/div>\n
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\ud83c\udf3f<\/div>\n
\n Glyphosate and herbicide specialisation<\/div>\n
Glyphosate and AMPA\n in groundwater by HPLC-MS\/MS at sub-ppb detection limits \u2014 critical for the Pampa\n region where intensive soy agriculture makes these the primary groundwater\n contamination concern. Full pesticide multi-residue panel available.<\/div>\n <\/div>\n
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\ud83c\udfdb\ufe0f<\/div>\n
\n Regulatory comparison<\/div>\n
Results reported\n against Decree 831\/93 Table 2 (groundwater quality guidelines), Argentine Drinking\n Water Code (CAA Resolution 494\/94, SMR-Q), WHO drinking water guidelines and\n EPA MCLs \u2014 accepted by SAyDS, OPDS and provincial authorities.<\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Monitoring well design and construction \u2014 phreatimeters for all geological formations<\/span>\n
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\n A phreatimeter network is only as good as the wells it is built on<\/div>\n
\n Well design \u2014 screen interval, slot size, casing diameter, gravel pack specification\n and surface completion \u2014 must be engineered for the specific lithology, aquifer\n depth and sampling objective. Poorly designed wells produce non-representative\n samples and unreliable piezometric data.<\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\ud83d\udd29 Well design<\/div><\/div>
Engineering of screen interval, slot size (0.2\u20130.5 mm depending on formation grain size), casing material (HDPE or PVC Schedule 40\/80), annular seal design and surface completion \u2014 all matched to lithology, target depth and intended use (contaminant monitoring vs. potability).<\/div><\/div>
\u2699\ufe0f Drilling and installation<\/div><\/div>
Construction of monitoring wells in any geological formation \u2014 sandy, silty or clay-rich unconsolidated sediments and fractured rock. Hollow-stem auger, mud rotary or direct push depending on formation, depth and presence of volatile contaminants.<\/div><\/div>
\ud83e\udea8 Gravel pack and annular seal<\/div><\/div>
Placement of filter pack gravel around the screen section and bentonite seal above to prevent vertical leakage between aquifer horizons \u2014 the elements that determine hydraulic isolation and sample representativeness.<\/div><\/div>
\ud83d\udee0\ufe0f Well development<\/div><\/div>
Air lift, surge and pump development to remove drilling fluid, fines and disturbed material from the gravel pack zone \u2014 until turbidity and field parameters stabilise. Documented with development records.<\/div><\/div>
\ud83e\udea3 Exploratory trenches (calicatas)<\/div><\/div>
Manual or mechanical excavation of trenches for shallow visual inspection of near-surface stratigraphy, identification of fill materials, buried structures and surface contamination zones inaccessible to drilling.<\/div><\/div>
\ud83d\udccd GPS positioning and optical levelling<\/div><\/div>
GPS coordinate recording of each well top and ground level. Optical levelling (level instrument and\/or total station) of all well reference elevations relative to a common datum \u2014 the foundation for accurate water table contouring.<\/div><\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Piezometric level measurement and aquifer monitoring<\/span>\n
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\n Synchronous piezometric measurements \u2014 the data behind the water table map<\/div>\n
\n Electronic interface probe \u00b7 0.001 m sensitivity \u00b7 decontaminated between wells \u00b7 GPS-positioned<\/div>\n <\/div>\n
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\n Measurement protocol<\/div>\n
\n Depth to water is measured in each well using an electronic interface\n probe with 0.001 m sensitivity<\/strong> \u2014 recording depth to water\/product\n interface (for NAPL detection) and depth to bottom of well. All measurements\n made synchronously in a single day to ensure water table data reflects\n true hydraulic conditions at one moment in time. All equipment decontaminated\n between wells to prevent cross-contamination.<\/div>\n <\/div>\n
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\n What is produced from level data<\/div>\n
\n \u2713 Water table elevation at each well (from levelled reference)
\n \u2713 Potentiometric surface contour map (equipotential lines)
\n \u2713 Groundwater flow direction arrows
\n \u2713 Hydraulic gradient calculation
\n \u2713 Free-phase NAPL thickness estimation (if applicable)
\n \u2713 Seasonal variation documentation
\n \u2713 Input data for MODFLOW groundwater flow model\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Groundwater sampling \u2014 representative low-flow protocol<\/span>\n
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\n Representative sampling is the most critical quality control step in groundwater monitoring<\/div>\n <\/div>\n
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\n A groundwater sample is only representative of aquifer water if the stagnant water\n that has been standing in the well casing has been removed before sampling, and if\n field parameters confirm that formation water \u2014 not casing water \u2014 is being collected.<\/p>\n

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Well purging<\/div>
Low-flow purging (0.1\u20130.5 L\/min) until pH, conductivity, dissolved oxygen, Eh, turbidity and temperature stabilise \u2014 typically 3\u20135 well volumes. Purge records maintained for QA\/QC.<\/div><\/div>
Field parameters<\/div>
Continuous measurement of pH, conductivity (\u00b5S\/cm), dissolved oxygen (mg\/L), oxidation-reduction potential (mV), turbidity (NTU) and temperature (\u00b0C) throughout purging. Stability criteria: <10% variation over 3 consecutive readings.<\/div><\/div>
Sample collection<\/div>
Samples collected through dedicated low-flow pump or bailer after stabilisation. Transferred directly to laboratory-prepared containers \u2014 pre-acidified for metals, preserved with HCl\/Na\u2082S\u2082O\u2083 for VOCs. No headspace in VOC containers.<\/div><\/div>
Chain of custody<\/div>
Temperature-controlled sample transport (4\u00b0C), documented chain of custody from well to laboratory, preservation verification on arrival, laboratory receipt confirmation.<\/div><\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Drinking water analysis \u2014 potability assessment<\/span>\n
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\n Complete potability panels for supply wells, production wells and water supply systems<\/div>\n
\n Argentine CAA Resolution 494\/94 (SMR-Q) \u00b7 WHO Guidelines (2022) \u00b7 EPA MCLs<\/div>\n <\/div>\n
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\u2697\ufe0f Physicochemical<\/div>\n <\/div>\n
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\n pH \u00b7 conductivity \u00b7 turbidity \u00b7 colour \u00b7 odour \u00b7 taste \u00b7\n total dissolved solids (TDS) \u00b7 hardness (total, Ca, Mg) \u00b7\n alkalinity \u00b7 acidity \u00b7 dissolved oxygen \u00b7 redox potential \u00b7\n iron (total, dissolved) \u00b7 manganese \u00b7 silica\n <\/div>\n <\/div>\n <\/div>\n\n
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\ud83d\udc8a Macro-ions and nutrients<\/div>\n <\/div>\n
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\n Chlorides \u00b7 sulphates \u00b7 nitrates (NO\u2083\u207b) \u00b7 nitrites (NO\u2082\u207b) \u00b7\n ammonium (NH\u2084\u207a) \u00b7 phosphates \u00b7 fluorides \u00b7 bromides \u00b7\n sodium \u00b7 potassium \u00b7 calcium \u00b7 magnesium \u00b7\n bicarbonates \u00b7 carbonates \u00b7 SAR index\n <\/div>\n <\/div>\n <\/div>\n\n
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\u2620\ufe0f Trace metals and metalloids<\/div>\n <\/div>\n
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\n Arsenic (As) \u00b7 Antimony (Sb) \u00b7 Barium (Ba) \u00b7 Cadmium (Cd) \u00b7\n Chromium total \u00b7 Cr(VI) \u00b7 Lead (Pb) \u00b7 Mercury (Hg) \u00b7 Nickel (Ni) \u00b7\n Selenium (Se) \u00b7 Zinc (Zn) \u00b7 Copper (Cu) \u00b7 Iron \u00b7 Manganese \u00b7\n by ICP-MS at \u00b5g\/L (ppb) levels\n <\/div>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Glyphosate and AMPA \u2014 the priority herbicide in Argentine groundwater<\/span>\n
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\n Glyphosate and AMPA analysis by HPLC-MS\/MS \u2014 the analytical challenge solved<\/div>\n
\n Sub-ppb detection limits \u00b7 HPLC-MS\/MS \u00b7 derivatisation protocol \u00b7 water matrix \u00b7\n Argentine and WHO guideline comparison<\/div>\n <\/div>\n
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\n Why glyphosate is the critical herbicide in Argentine groundwater<\/div>\n
\n Argentina is the world's third-largest user of glyphosate \u2014 applied intensively\n across soybean, maize and sunflower crops in the Pampa region. Glyphosate is\n polar, water-soluble and resistant to hydrolysis, giving it significant mobility\n in the soil-water system. AMPA (aminomethylphosphonic acid) is the primary\n degradation product and is equally regulated.

\n Despite its widespread use, glyphosate analysis in water is technically demanding \u2014\n its highly polar, ionic character makes it poorly retained on standard reversed-phase\n HPLC columns, and it requires either derivatisation (FMOC-Cl) or HILIC\/ion-pair\n chromatography for reliable quantification.<\/div>\n <\/div>\n
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\n Biogroup's analytical approach<\/div>\n
\n \u2713 Method:<\/strong> HPLC-MS\/MS with FMOC-Cl derivatisation or direct\n LC-MS\/MS (HILIC column)
\n \u2713 Detection limit:<\/strong> 0.05 \u00b5g\/L (0.05 ppb) \u2014 below all\n applicable regulatory thresholds
\n \u2713 Analytes:<\/strong> Glyphosate + AMPA (metabolite) reported individually
\n \u2713 Argentine guideline:<\/strong> 0.9 mg\/L (CAA Resolution 494\/94) \u2014 note\n that this limit predates modern risk assessments
\n \u2713 WHO guideline:<\/strong> 1 mg\/L
\n \u2713 EU limit (drinking water):<\/strong> 0.1 \u00b5g\/L (individual pesticide)
\n \u2713 Full pesticide multi-residue panel<\/strong> also available (100+ compounds)\n <\/div>\n
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\n Biogroup also analyses the full organophosphate and organochlorine pesticide\n panels in groundwater \u2014 atrazine, acetochlor, endosulfan, chlorpyrifos and\n 80+ additional compounds by GC-MS and HPLC-MS\/MS.\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Contaminated site groundwater analysis \u2014 Table 2 Decree 831\/93 full panel<\/span>\n
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\n Complete Decree 831\/93 Table 2 analytical capability \u2014 groundwater quality guidelines<\/div>\n
\n Full contaminant panel \u00b7 EPA SW-846 methods \u00b7 GC-MS \u00b7 ICP-MS \u00b7 HPLC-MS\/MS \u00b7\n results reported vs. Table 2 thresholds<\/div>\n <\/div>\n
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\n For contaminated site investigations (Phase II ESA), remediation monitoring and\n regulatory submissions, Biogroup provides the complete groundwater contaminant\n panel with results compared against Decree 831\/93 Table 2 groundwater quality\n guidelines \u2014 the Argentine regulatory reference for contaminated site decisions.<\/p>\n

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TPH fractions<\/div>
GRO \u00b7 DRO \u00b7 MRO \u00b7 TX-1005\/1006 \u00b7 GC-FID<\/div><\/div>
BTEX<\/div>
Benzene \u00b7 toluene \u00b7 ethylbenzene \u00b7 xylenes \u00b7 GC-MS purge-and-trap<\/div><\/div>
MTBE \/ TAME<\/div>
Fuel oxygenates \u00b7 GC-MS headspace \u00b7 Table 2<\/div><\/div>
VOCs & SVOCs<\/div>
EPA 8260B \u00b7 EPA 8270D \u00b7 60+ compounds<\/div><\/div>
PAHs<\/div>
16 EPA priority \u00b7 HPLC-FLD \u00b7 benzo(a)pyrene<\/div><\/div>
Chlorinated solvents<\/div>
TCE \u00b7 PCE \u00b7 DCE \u00b7 VC \u00b7 GC-MS \u00b7 EPA 8260<\/div><\/div>
Heavy metals<\/div>
ICP-MS \u00b7 As\/Cd\/Cr\/Pb\/Hg\/Ni\/Zn \u00b7 EPA 3005A<\/div><\/div>
Cr(VI)<\/div>
Hexavalent chromium \u00b7 colorimetric\/IC \u00b7 EPA 3060A<\/div><\/div>
Pesticides<\/div>
OC \u00b7 OP \u00b7 glyphosate \u00b7 HPLC-MS\/MS \u00b7 GC-MS<\/div><\/div>
PCBs<\/div>
GC-ECD \u00b7 EPA 8082A \u00b7 Aroclor series<\/div><\/div>
Cyanides<\/div>
Free + total \u00b7 colorimetric \u00b7 IC<\/div><\/div>
Inorganic anions<\/div>
Nitrates \u00b7 sulphates \u00b7 chlorides \u00b7 fluorides \u00b7 IC<\/div><\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Long-term aquifer monitoring network management<\/span>\n
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\ud83d\udcca Periodic monitoring campaigns<\/div>\n <\/div>\n
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\n Scheduled monitoring campaigns (monthly, quarterly, semi-annual or annual) with\n synchronous level measurement and groundwater sampling across all network wells.\n Required for: contaminated site remediation monitoring, landfill environmental\n surveillance, industrial facility groundwater compliance and regulatory reporting.<\/div>\n
\n \u2713 Full level-and-sample campaign per monitoring round
\n \u2713 Trend analysis \u2014 contaminant concentration vs. time
\n \u2713 Water table contouring each round
\n \u2713 Comparison against previous rounds
\n \u2713 Exceedance flag and regulatory reporting\n <\/div>\n <\/div>\n <\/div>\n
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\ud83d\udccb Monitoring reports<\/div>\n <\/div>\n
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\n Each monitoring campaign produces a complete report submitted to the\n site owner and, where required, to regulatory authorities \u2014 documenting\n levels, analytical results, trend analysis, exceedances and recommendations.<\/div>\n
\n \u2713 Piezometric level table and water table map
\n \u2713 Full analytical results with laboratory certificates
\n \u2713 Comparison against Table 2 \/ Table 9 screening levels
\n \u2713 Concentration trend plots for each analyte and well
\n \u2713 Plume extent assessment
\n \u2713 Remediation system performance evaluation (if applicable)\n <\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Applications \u2014 when underground water monitoring is required<\/span>\n
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\u26fd<\/div>
Petrol stations & fuel spills<\/div>
BTEX, MTBE and TPH in shallow aquifer. Plume monitoring during active remediation. Required for Phase II characterisation and closure certification.<\/div><\/div>
\ud83c\udf3e<\/div>
Agricultural zones<\/div>
Nitrates, glyphosate, AMPA and pesticide residues in phreatic aquifer. Drinking water quality of private production wells.<\/div><\/div>
\ud83d\uddd1\ufe0f<\/div>
Landfills<\/div>
Leachate plume impact assessment on downgradient groundwater. Regulatory monitoring network per Ley 24.051 and provincial waste facility requirements.<\/div><\/div>
\ud83c\udfed<\/div>
Industrial facilities<\/div>
Baseline groundwater quality and ongoing compliance monitoring. Phase II investigation support \u2014 sampling, analysis and plume characterisation.<\/div><\/div>
\ud83c\udfe1<\/div>
Potability of supply wells<\/div>
Physicochemical and microbiological potability panels for private and municipal supply wells, swimming pools and industrial process water.<\/div><\/div>
\ud83c\udfd7\ufe0f<\/div>
Construction & development<\/div>
Pre-construction groundwater baseline. Dewatering water quality monitoring. Assessment of groundwater impact from construction activities.<\/div><\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Regulatory framework \u2014 groundwater quality standards<\/span>\n
<\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\ud83c\udde6\ud83c\uddf7 Argentine standards<\/div>\n <\/div>\n
\n
\n \u2022 Decree 831\/93 Table 2<\/strong> \u2014 groundwater quality guidelines
\n \u2022 Decree 831\/93 Table 9<\/strong> \u2014 soil guideline values (cross-ref)
\n \u2022 CAA Res. 494\/94<\/strong> (SMR-Q) \u2014 drinking water standard
\n \u2022 Ley 24.051<\/strong> \u2014 hazardous waste \/ groundwater protection
\n \u2022 ENOHSA \/ ERAS<\/strong> \u2014 drinking water regulatory framework
\n \u2022 Provincial<\/strong> \u2014 Santa Fe \u00b7 Buenos Aires \u00b7 C\u00f3rdoba regulations\n <\/div>\n <\/div>\n <\/div>\n
\n
\n
\ud83c\udf0d WHO Guidelines<\/div>\n <\/div>\n
\n
\n \u2022 WHO Guidelines for Drinking Water Quality<\/strong> (4th ed. 2022)
\n \u2022 Arsenic: 10 \u00b5g\/L \u00b7 Nitrates: 50 mg\/L
\n \u2022 Glyphosate: 1 mg\/L (provisional)
\n \u2022 Fluoride: 1.5 mg\/L
\n \u2022 Cryptosporidium \/ Giardia: treatment targets
\n \u2022 E. coli: absent in 100 mL\n <\/div>\n <\/div>\n <\/div>\n
\n
\n
\ud83c\uddfa\ud83c\uddf8 EPA standards<\/div>\n <\/div>\n
\n
\n \u2022 EPA MCLs<\/strong> \u2014 Maximum Contaminant Levels (40 CFR Part 141)
\n \u2022 EPA RSLs<\/strong> \u2014 Regional Screening Levels (groundwater)
\n \u2022 Arsenic: 10 \u00b5g\/L \u00b7 Lead: 15 \u00b5g\/L (action level)
\n \u2022 Benzene: 5 \u00b5g\/L \u00b7 TCE: 5 \u00b5g\/L
\n \u2022 MTBE: 20 \u00b5g\/L (secondary, taste\/odour)
\n \u2022 SW-846<\/strong> \u2014 analytical methods for groundwater\n <\/div>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n Related services<\/span>\n
<\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\ud83c\udf0d Geology & Hydrogeology \u2192<\/div>
Phreatimeters \u00b7 MODFLOW \u00b7 RT3D \u00b7 VES<\/div><\/a>
\ud83c\udf31 Sites Remediation \u2192<\/div>
ISCO \u00b7 bioremediation \u00b7 MNA \u00b7 pump-and-treat<\/div><\/a>
\ud83c\udfde\ufe0f Soil Monitoring \u2192<\/div>
TPH \u00b7 BTEX \u00b7 metals \u00b7 PAHs \u00b7 Table 9<\/div><\/a>
\ud83d\udca7 Water & Wastewater \u2192<\/div>
Industrial effluent \u00b7 DBO \u00b7 heavy metals<\/div><\/a>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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<\/div>\n
\n
\n Monitoring Wells \u00b7 Aquifer Sampling \u00b7 Glyphosate \u00b7 Potability \u00b7 Table 2\n <\/div>\n
\n Need groundwater monitoring or analysis?<\/div>\n
\n From potability testing of a supply well to a full contaminated site monitoring\n network \u2014 Biogroup provides well construction, representative sampling and\n complete analytical characterisation in one integrated service.\n <\/div>\n \n Request a groundwater study \u2192<\/a>\n
\n \ud83d\udcde +54 341 425-6431<\/span>\n \ud83d\udcde +54 341 447-4486<\/span>\n \u2709 biogroup@biogroup.com.ar<\/span>\n \ud83d\udccd 3 de febrero 920 \u00b7 Rosario, Argentina<\/span>\n Mon\u2013Fri 08:00\u201317:00<\/span>\n <\/div>\n <\/div>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

💧 Monitoring Wells \u00b7 Aquifer Sampling \u00b7 Glyphosate \u00b7 Potability \u00b7 HPLC-MS\/MS \u00b7 Table 2 Decree 831\/93 Underground Water Groundwater monitoring well construction, aquifer surveillance, drinking water potability and contaminated site groundwater characterisation. Biogroup provides a complete groundwater service \u2014 from the design and construction of monitoring wells (phreatimeters) and hydraulic levelling to representative low-flow…<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"_joinchat":[],"footnotes":""},"class_list":["post-989689","page","type-page","status-publish","hentry"],"yoast_head":"\nUnderground Water - BioGroup<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/biogroup.com.ar\/en\/underground-water\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Underground Water - BioGroup\" \/>\n<meta property=\"og:description\" content=\"💧 Monitoring Wells \u00b7 Aquifer Sampling \u00b7 Glyphosate \u00b7 Potability \u00b7 HPLC-MS\/MS \u00b7 Table 2 Decree 831\/93 Underground Water Groundwater monitoring well construction, aquifer surveillance, drinking water potability and contaminated site groundwater characterisation. 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Biogroup provides a complete groundwater service \u2014 from the design and construction of monitoring wells (phreatimeters) and hydraulic levelling to representative low-flow...","og_url":"https:\/\/biogroup.com.ar\/en\/underground-water\/","og_site_name":"BioGroup","article_modified_time":"2026-05-19T18:47:27+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"16 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/biogroup.com.ar\/en\/underground-water\/","url":"https:\/\/biogroup.com.ar\/en\/underground-water\/","name":"Underground Water - BioGroup","isPartOf":{"@id":"https:\/\/biogroup.com.ar\/#website"},"datePublished":"2022-11-16T18:36:19+00:00","dateModified":"2026-05-19T18:47:27+00:00","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/biogroup.com.ar\/en\/underground-water\/"]}]},{"@type":"WebSite","@id":"https:\/\/biogroup.com.ar\/#website","url":"https:\/\/biogroup.com.ar\/","name":"BioGroup","description":"Centro de Investigaci\u00f3n Cient\u00edfica y Tecnol\u00f3gica","publisher":{"@id":"https:\/\/biogroup.com.ar\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/biogroup.com.ar\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/biogroup.com.ar\/#organization","name":"BioGroup","url":"https:\/\/biogroup.com.ar\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/biogroup.com.ar\/#\/schema\/logo\/image\/","url":"https:\/\/biogroup.com.ar\/wp-content\/uploads\/2024\/10\/cropped-logo-1.jpg","contentUrl":"https:\/\/biogroup.com.ar\/wp-content\/uploads\/2024\/10\/cropped-logo-1.jpg","width":573,"height":145,"caption":"BioGroup"},"image":{"@id":"https:\/\/biogroup.com.ar\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/pages\/989689","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/comments?post=989689"}],"version-history":[{"count":5,"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/pages\/989689\/revisions"}],"predecessor-version":[{"id":993311,"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/pages\/989689\/revisions\/993311"}],"wp:attachment":[{"href":"https:\/\/biogroup.com.ar\/en\/wp-json\/wp\/v2\/media?parent=989689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}