Questions people ask
before they drill.

A pre-drill survey costs a small fraction of what drilling costs, and far less than one dry hole. We price per property by size, access, and how many points we read, so the accurate answer is a quote for your parcel. For context, a Philippine deep well often runs from the low hundreds of thousands of pesos into the millions depending on depth and casing, and a wrong spot means paying to drill twice. We read your ground first and put the likely depth, the yield range, and the saltwater risk in writing, so you drill once, on data.

A deep well in the Philippines does not have one fixed price, and on Siargao island logistics push it higher. Real project examples range widely: a 91 meter borehole came to roughly PHP 1 million, an economic-zone well to about PHP 1.3 million, and a 200 meter project to around PHP 9 million, while smaller barangay wells can be much cheaper. Cost scales mainly with depth and the steel casing required, which makes depth uncertainty the biggest budget risk. A registered driller's quote is the real number. We read your ground first and estimate the depth, then point to one location, so you drill once and do not pay to drill twice.

Run a pre-drill seismoelectric survey, which reads the ground without putting a hole in it. We estimate aquifer depth, thickness, an indicative yield range, and saltwater-intrusion risk, so you drill one precise hole on measured data instead of a field of dry ones. On Siargao's karst limestone, where water moves through uneven fractures, the exact spot matters, which is why a survey of your specific parcel beats a guess. We read your land and put the likely depth, the yield range, and the salt risk in writing, so you drill once, on data.

A seismoelectric survey gives you measured data on the most likely depth and an indicative yield range, which is far better than guessing. We read your specific parcel non-destructively and put the result in writing, including saltwater-intrusion risk. Clues like neighboring wells help, but they do not tell you the depth or yield under your ground. A survey narrows that uncertainty to one recommended drill location with a stated confidence level, so you commit your money to a measured decision. Potability is confirmed by a separate laboratory test once the well exists.

Read the ground before you drill, not after. On Siargao's karst limestone, water moves through uneven fractures, so a blind drill can miss a productive zone by a few meters, and a dry hole is sunk cost you usually pay again to re-drill elsewhere. A pre-drill survey estimates the most likely depth, an indicative yield range, and saltwater risk, then points to one recommended location, which turns a guess into a measured decision. Think of the survey as insurance on a six-figure-peso spend: you drill once, on data, instead of gambling the rig.

A survey is worth it because it costs a small fraction of drilling and turns a blind gamble into a measured decision. You would not pour a foundation without a soil test, and a water survey is the same diligence for what is under the ground. It gives you a written, independent read on the most likely depth, an indicative yield range, and saltwater-intrusion risk, so one precise hole is sited on data. That is how you avoid paying to drill twice: you spend a fraction up front and drill once on a measured location.

Survey first. A non-destructive survey reads several candidate spots without putting a single hole in the ground, while a test well is destructive and you pay per attempt. The survey is the cheaper first step that narrows where, and whether, to drill, then the rig moves once to the recommended location. We own no rig, so the read is straight: the recommendation reflects only what your parcel actually reads. The driller's pump test confirms the final yield once that one hole is in.

A Drill-Ready Report is a written document with the most likely depth to water, estimated aquifer thickness, an indicative yield range, saltwater-intrusion risk, a recommended drill location, and a confidence level. It is produced from seismoelectric readings using US-developed seismoelectric technology, and the survey is non-destructive, meaning no holes during the work. Every figure is sized to guide one precise drill, so you site the rig on data. The report is built to support your decision and to strengthen an NWRB permit file. Drinkability is confirmed by a separate laboratory test once the well exists.

A seismoelectric survey takes readings on your land with US-developed seismoelectric technology and turns them into a written estimate of depth, thickness, an indicative yield range, and saltwater-intrusion risk. We describe the outcome rather than the equipment, because what matters to you is the report, not the hardware. On accuracy: it gives a measured read that beats guessing, especially in Siargao's fractured karst, and it puts the numbers in writing so you drill on data. No one can promise water that is still underground. What we give you is the measured odds and an independent read to drill on, and the driller's pump test confirms the real flow after drilling.

We find water with instrument-based seismoelectric readings, and we deliver the result as a written report rather than a feeling on site. A seismoelectric survey takes measurements on your land and estimates the most likely depth, an indicative yield range, and saltwater-intrusion risk, with a recommended location and a confidence level. People have used divining for generations and we respect it as a different tool answering a different question; our approach adds a measured, documented record you can drill from and put in a permit file. You get numbers in writing, from operators who own no rig, so the read is straight.

Not quite. A natural-electric-field water detector reads how conductive the ground is and flags where a water-bearing zone is likely, which works in good conditions. But it cannot put an indicative yield on the zone, and because saltwater is itself very conductive, a salty zone and a freshwater aquifer can read the same on a one-button plot, so it cannot reliably tell fresh from salt on its own. A US-developed seismoelectric survey adds an indicative-yield estimate and a separate saltwater-intrusion read, delivered in a written report. You get more of the picture, in writing, before you drill.

No one can promise water that is still underground, and anyone who guarantees it is overpromising. What we give you is the measured odds and an independent read to drill on: a recommended location, the most likely depth, an indicative yield range, and a saltwater-risk read, all sized to cut the odds of a dry hole. The two ways a successful Siargao well still disappoints are low yield and creeping salt, and those are exactly what we read before you commit your money to the rig. We own no rig, so the read is straight: measured data going in, no sales agenda.

Siargao is genuinely hard to read, which is why surveying first pays off. The island is mostly karst limestone, where water moves through uneven fractures and channels rather than evenly through the rock, so one spot can hit a good aquifer and a spot a few meters away can miss. Near the coast, a thin layer of fresh water floats on salt water, so a well that runs fine in the wet months can turn salty in the dry season. We take seismoelectric readings on your land and put the most likely depth, an indicative yield range, and saltwater risk in writing, so you drill once, on data, instead of guessing the spot.

Siargao is predominantly karst limestone, sitting on an older volcanic and ophiolite basement, with no significant surface drainage because water disappears into underground channels. A peer-reviewed 2025 geological study describes the basal rocks as limestone karst over a Late Cretaceous ophiolite basement, with a volcanic formation in the island's center. The practical meaning for a well: in karst, water travels through fractures, conduits, and dissolved channels rather than evenly through the rock, so yield and quality can change sharply over short distances. That is the core reason the exact spot you drill matters, and why we read your specific parcel rather than quote an island-wide number.

There is no single water-table depth for Siargao, because it varies a lot by location across the island's karst. The island is limestone over a volcanic basement, where water moves through uneven fractures, so depth can change sharply from one lot to the next, and near the coast a freshwater lens sits on salt water. That is why an island-wide number would mislead you. The reliable figure for your build is a measured estimate of your own parcel, which we provide: the most likely depth, an indicative yield range, and saltwater risk, in writing.

The two big challenges on Siargao are unpredictable karst geology and coastal saltwater intrusion. In karst limestone, water moves through uneven fractures and conduits, so a productive aquifer and a dry zone can sit a few meters apart. Near the shore, fresh water floats as a thin lens on salt water, so a well can come up brackish or turn salty in the dry season when demand peaks. On top of that, the island already sees dry-season shortages and springs that drop in summer. We read these conditions on your land and put the most likely depth, an indicative yield range, and salt risk in writing, so you drill on data.

A pre-drill survey screens saltwater-intrusion risk so you can site the well away from it. Well water turns salty when seawater moves into the aquifer, which is common on coastal and island sites. On a small island, fresh water floats as a thin lens on denser salt water, and over-pumping or a too-deep well can pull that salt upward into the well, a process called upconing. Roughly speaking, dropping the water table by one foot can shrink the freshwater column beneath by about forty feet, which is why coastal wells are so sensitive, and once a lens is damaged, recovery can take years. We put that risk in writing before you drill. No one can promise water that is still underground. What we give you is the measured odds and an independent read to drill on, and confirming actual salinity is a separate laboratory step once the well exists.

A survey screens for saltwater-intrusion risk before you drill, so you can site the hole away from the salt and lower the odds of a brackish well. Near the coast this matters because fresh water sits as a thin lens on top of denser sea water, and drilling too deep or pumping too hard can pull salt up into the well. Our report puts that risk in writing, with the most likely depth and an indicative yield range. No one can promise water that is still underground. What we give you is the measured odds and an independent read to drill on, and confirming actual salinity needs a laboratory test once the well exists.

Lower the odds of a salty beachfront well by screening saltwater-intrusion risk and choosing depth and location on measured data before you drill. Coastal aquifers connect to the sea, and a poorly sited or too-deep well, or over-pumping, can pull salt water in, which is hard or impossible to reverse once it happens. A pre-drill survey assesses that intrusion risk and indicates a more favorable depth and spot, which is the diligence step for any near-shore site. No one can promise water that is still underground. What we give you is the measured odds and an independent read to drill on, and salinity and potability are confirmed by a laboratory test after drilling.

No. Locating water and confirming it is safe to drink are two different things. A survey estimates where water likely is, how deep, the indicative yield, and the risk of salt, all before you drill. Whether the water is potable, meaning free of coliforms and E. coli and within limits for things like nitrates and dissolved solids, is judged against the Philippine National Standards for Drinking Water and confirmed by an accredited laboratory after the well exists. A lab test is also part of getting a sanitary permit. The survey is the first step that sites you on usable water, and the lab test is the required follow-up that confirms it is safe to drink.

Confirming well water is safe means an accredited laboratory test against the Philippine National Standards for Drinking Water, not a visual or taste check. The mandatory core parameters include thermotolerant coliforms and E. coli, which should not be detectable in a drinking-water sample, plus arsenic, lead, nitrate, turbidity, pH, and total dissolved solids. A drinking-water analysis is also one of the requirements for a sanitary permit from your LGU. This is a separate step from finding water: our survey locates and estimates the aquifer before drilling, and the accredited lab is the one that certifies drinkability after the well is in.

Yes. Under the Philippine Water Code (PD 1067), abstracting groundwater requires a Permit to Drill and a Water Permit from the National Water Resources Board, regardless of property type, except for certain purely domestic uses which are lighter on requirements. Your application must name a registered well driller, and since 26 September 2025 water-constrained areas may also require a monitoring well. Our written report strengthens the application: its data on depth and indicative yield gives the file independent, measured backing. This is general guidance pointing you to the NWRB, not legal advice.

An NWRB application generally expects proof of land right, well and aquifer data, a water-demand computation, a vicinity map, and a named registered driller, with the pumping test and water analysis submitted after drilling. Commercial and multi-unit projects also face source-capacity review and, in water-stressed areas, a monitoring-well requirement. An independent written survey report (estimated depth, indicative yield range, recommended location, saltwater risk, confidence) strengthens that file precisely because it comes from a surveyor with no stake in the drill. It is one of the strongest source inputs you can put in front of the NWRB, and the permit itself remains the legal step before extraction.

It depends on use. Purely domestic use by a single household below a small threshold is generally lighter, often registration with the NWRB rather than a full permit, while larger draw, rental villas, or multiple units typically require an NWRB Water Permit, and a Permit to Drill applies before drilling in non-exempt cases. Groundwater extraction in the Philippines needs NWRB authorization, and the application names a registered driller. Our written report gives that permit and registration file independent, measured backing. This is general guidance pointing to the NWRB, not legal advice.

Yes. We survey your property non-invasively before you build or buy, producing a written, independent report on the most likely depth to water, an indicative yield range, and saltwater-intrusion risk, the same way you would run a soil or title check before a major purchase. We own no rig and do not broker the land, so the read is straight: it shows only what your parcel reads, which is exactly what you want when your money is on the line. Potability is a separate lab step, and the survey is a decision input that sits alongside your title and permit work.

Alongside title, zoning, encumbrances, and access, add pre-purchase water diligence, because water is the one unknown you cannot see at a viewing. A non-invasive survey reports the most likely depth to water, an indicative yield range, and saltwater-intrusion risk in writing, so you can budget, negotiate, or walk away from a salty or dry lot. On Siargao's karst and coastal ground, this varies parcel to parcel, so a neighbor's good well does not tell you what is under yours. We read your specific lot and put the numbers in writing, so the purchase decision rests on data.

A well usually goes brackish or dry for one of a few reasons: it was not deep enough into the fresh layer, it was sited too close to the salt transition, it was over-pumped, or the dry season thinned the freshwater lens. For a replacement, a pre-drill survey estimates a better depth and location and screens saltwater-intrusion risk before the rig moves again, so the next hole is chosen on measured data, not the same guess. You drill the replacement once, on a read of your ground, and potability is confirmed by a separate laboratory test once the well is in.

We own no rig, so the read is straight. A read that comes from whoever sells the drill has an incentive to recommend drilling; ours has none. Our written report reflects only what your parcel actually reads, which is exactly what an owner doing diligence, a lender, and an NWRB file want. The deliverable is the same regardless of the outcome: most likely depth, indicative yield range, saltwater risk, recommended location, and confidence. Independence is the whole point: the numbers we hand you are the numbers your ground shows.

Owning a well pays for itself over time because trucked and delivered water is a cost that never ends, while a well is mostly a one-time spend plus low running costs. Delivered water in the Philippines can run several times the price of piped supply, even up to roughly ten times, and island logistics push it higher, so a property that buys water month after month watches that bill accumulate for years. A well that carries your load turns that recurring cost into pumping electricity. The exact payback tracks your usage, the local water price, and drilling cost, and a survey first makes sure the well is sized and sited to actually carry that load.

The path to an independent supply is a properly sited, properly sized own-source well, and a pre-drill survey is the step that makes sure it actually carries your load and stays fresh. Tanker water is expensive, weather and logistics dependent, and disruptions hit guest experience and reviews, so the recurring cost and risk add up. A survey reads the indicative yield and screens saltwater risk before you drill, so the well is sized to deliver rather than under-perform. Extraction needs an NWRB permit, and potability needs a lab test, both of which follow the survey in the normal order of work.

Sizing a resort well starts on the demand side: estimate per-room daily use plus pool, kitchen, and laundry loads to a target draw, and remember peak morning and dry-season demand is what the source has to carry. The missing variable is what the ground under your specific site can deliver, which is why yield, not just the presence of water, is the real number. A pre-drill survey estimates an indicative yield range and likely depth so you size pumps and storage against measured data rather than a guess. The yield comes as an indicative range, and the driller's pump test confirms the final figure once the well is in.

It depends on demand and what each point can yield, which is why a tract is best read at multiple locations rather than a single guess. Resort and subdivision demand stacks across rooms, laundry, kitchen, pool, spa, and landscaping, and peak dry-season demand is what a source must carry, so yield drives the decision. A survey gives an indicative yield range per surveyed point, so phasing choices, one central well versus per-cluster sources, rest on data and a mis-sited well does not strand a phase. The yield figures come as indicative ranges, and the driller's pump test confirms the final number once each hole is in.

Yes. We survey multiple points across a tract so siting and phasing rest on per-site depth, indicative yield, and intrusion screening rather than a single hopeful guess, which protects against a mis-sited central well stranding a phase. We own no rig and do not broker land, so the read is straight and the report carries weight in your NWRB and investor documentation. Potability and the NWRB permit are separate steps, and the driller's pump test confirms the final yield per hole.

An independent written survey report gives a feasibility study and an investor or lender file a credible, conflict-free water-source input: most likely depth, indicative yield range, saltwater-intrusion risk, recommended location, and confidence. It sits alongside soil and title checks as a diligence artifact, and because we own no rig, the read is straight with no sales bias baked in. That independence is what makes it bankable in a feasibility or investor file. Extraction still needs the NWRB permit, and potability still needs a lab test, both of which follow in the normal order of work.

Public water-supply projects generally need a documented, independent water-source assessment for their funding and permitting, showing the source is suitable and sustainable, with an NWRB permit step and water-quality testing later. A pre-drill seismoelectric survey is an independent, written input that strengthens that water-source section: estimated depth, an indicative yield range, and saltwater-intrusion risk, from a surveyor with no stake in the drill, which carries weight on audit and donor review. Government and academic assessments remain a legitimate first call too. The required permits and water-quality tests follow in the normal order of work.

Government and academic groundwater assessments are a legitimate first call, especially for qualifying public or farm projects, and they are worth using. A paid seismoelectric survey complements them. What we add plainly: an indicative yield range alongside depth, a separate saltwater-intrusion read, independence from any drilling rig, and a fast on-island turnaround that fits Siargao schedules, all in one written report. Use both where time and budget allow, because more independent data means a cleaner read. Potability is confirmed by a separate laboratory step once the well exists.

Estimate yield before you drill, because presence of water is not the same as flow. A house well only has to keep a tap running, but a farm well has to carry irrigation or livestock through the driest months, when it matters most. A pre-drill seismoelectric survey reads the ground and gives an estimated depth and an indicative yield range, so you can see whether the most likely flow is in the ballpark the crop needs before the rig moves. That tells you whether to drill, where, or hold off, instead of sinking money into a low-flow hole, and the driller's pump test confirms the real flow once the well is in.

A well dries up in summer when its water level drops below the pump, which happens because the water table rises and falls with the seasons. A shallow or low-yield well can run fine in the wet months and fall short in the dry season, exactly when the crop needs water most, and drought years make it worse. The lesson for the next well is to understand the most likely depth and indicative yield before drilling, so the new hole is sited and sized for dry-season demand rather than wet-season appearances. A pre-drill survey gives you that independent written read, so the replacement is built for the hard months.

Locating water and confirming it is safe to use are two different things. A pre-drill survey estimates where water most likely is, the likely depth, an indicative yield range, and the risk of salt. Whether the water is actually safe and suitable for irrigation, livestock, or drinking, including salinity, hardness, and contaminants, is confirmed by a laboratory water test after the well is in. The survey sites you on the right spot, and the lab test is the required step that confirms usability before you rely on the water. We locate and read the ground; the accredited lab certifies what is safe to use.

Survey first, then permit, then drill is the order that protects your money. Start with a pre-drill survey: we read your land with US-developed seismoelectric technology and give you a written report with estimated depth, an indicative yield range, saltwater-intrusion risk, and a recommended location. Next comes the legal step, because extracting groundwater in the Philippines requires a Permit to Drill and a Water Permit from the NWRB, and your application must name a registered driller. Then a driller drills the one spot the report points to and runs a pump test to confirm the real yield. Finally, a laboratory test confirms whether the water is safe to drink. The survey is the de-risking step at the front, so every peso after it is spent on data.

The benefit is simple: you drill one precise hole on measured data instead of gambling on a guess. A pre-drill survey gives you a written report with the most likely depth, an indicative yield range, saltwater-intrusion risk, a recommended drill location, and a confidence level. That report does three things: it cuts the odds of paying to drill twice, it screens for the salt risk that ruins coastal wells, and because we own no rig, the read is straight with no sales agenda. That is exactly what a budget, a lender, or an NWRB file wants: one location, on data, that you can drill on.