What causes saltwater intrusion in coastal Rhode Island wells?

In coastal areas of Washington County and along Narragansett Bay, heavy freshwater withdrawal can draw salty ocean groundwater into coastal bedrock fractures. Ogden Wells performs hydrogeologic siting assessments, limits well depths where appropriate, and installs monitoring systems and reverse osmosis desalination units when coastal wells are subject to brackish infiltration.

How does well drilling in Western RI differ from the Narragansett Basin?

Western Rhode Island (Foster, Glocester, Coventry, West Greenwich) is underlain by crystalline granite and gneiss bedrock, requiring standard air-rotary fracture drilling (150–350 ft). The eastern Narragansett Basin features sedimentary coal measures, shale, and glacial gravel aquifers where shallower screen wells (40–100 ft) are common.

What permits are required to install a well in Rhode Island?

The Rhode Island Department of Environmental Management (RIDEM) regulates well construction under state environmental rules. Licensed contractors must file a Well Permit application prior to construction, maintain mandatory setbacks from Onsite Wastewater Treatment Systems (OWTS), and file completion documentation upon final pump installation.

Regional Service Territory — Rhode Island

Water Wells & Groundwater Services in Rhode Island

✓ Licensed in RI · Serving New England Since 1980📞 7-Day Dispatch: 1-800-339-9051

Rhode Island Hydrogeology & Well Drilling Conditions

Rhode Island's geology splits roughly in two: the western highlands are hard crystalline bedrock (similar to MA and CT) producing good-yield bedrock wells, while the Narragansett Basin in the east and south features softer sedimentary formations more suited to shallow overburden wells. Coastal properties near Narragansett Bay must be screened for saltwater intrusion. The RI DEM licenses well contractors and requires permits prior to drilling.

Dominant Aquifer

Bedrock and Overburden (Mixed)

Typical Well Depth

100–300 ft bedrock; 30–60 ft in glacial outwash areas

Bedrock Formations

Granite and gneiss in western RI; Narragansett Basin has sedimentary rock (coal measures, arkose)

Drinking Water Quality & Bedrock Contaminant Profiles in Rhode Island

Groundwater chemistry in Rhode Island is shaped by the mineralogy of its underlying rock formations. Our field testing and engineering team treats the following parameters statewide:

Saltwater Intrusion

Geological Cause: Coastal wells in Washington County and near Narragansett Bay at risk from tidal influence

Engineered Solution: Hydrogeologic site assessment before well siting; reverse osmosis if intrusion detected

Iron & Manganese

Geological Cause: Common in RI bedrock wells statewide

Engineered Solution: Oxidizing filter or aeration + filtration system

Nitrates

Geological Cause: Agricultural and septic system influence in Kent and Washington counties

Engineered Solution: Ion exchange nitrate-selective resin or reverse osmosis

Low pH

Geological Cause: Granitic bedrock produces naturally acidic, corrosive water

Engineered Solution: Calcite neutralizer to raise pH and reduce pipe corrosion

Rhode Island Well Permitting, Setbacks & Sanitary Code Compliance

RI DEM Well Permitting Program requires licensed contractor and permit prior to drilling. Well Completion Reports must be filed. Coastal wells may require additional review.

Septic Leach Field:

100 ft minimum separation

Septic Tank & Sewer:

50 ft minimum separation

Property Boundaries:

10–25 ft municipal setback

7-Day Emergency Well Service & Pump Dispatch in Rhode Island

When your well stops producing water or an electrical pressure switch fails in mid-winter, waiting days for parts is not an option. Ogden Wells operates a dedicated mobile emergency service fleet ready to roll across Rhode Island:

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Boom Hoist Trucks

Equipped to pull 400+ ft downhole pump columns safely in all weather conditions.

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Onboard Inventory

Stocked with Goulds and Franklin Electric submersible pumps (1/2 to 5 HP) and Well-X-Trol tanks.

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State Lab Diagnostics

Same-day water sampling for bacteria, heavy metals, arsenic, radon, and pH chemistry.

Communities & Municipalities Served Across Rhode Island

ProvidenceCranstonWarwickJohnstonNorth SmithfieldSmithfieldGlocesterFosterScituateCoventryWest GreenwichExeterRichmondHopkintonSouth KingstownNarragansettWesterlyCharlestown+ all regional Rhode Island communities

💡 Rhode Island's compact size means our Tewksbury base can reach every corner of the state easily — we have crew on-site in RI within hours of a call.

Northeast Groundwater Territory

New England & New York Regional Coverage

Active drilling licenses, hydrofracturing rigs, and 7-day emergency pump crews dispatched throughout Rhode Island and across the entire Northeast corridor.

Ogden Wells Regional Coverage Map with New England Callout — Serving MA, NH, ME, RI, CT, VT, and NY

Frequently Asked Questions About Water Wells in Rhode Island

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Fully licensed in Rhode Island. Providing professional well drilling and pump systems since 1980.

📞 1-800-339-9051 💬 Request a Quote

📍 7-State Coverage: MA · NH · ME · RI · CT · VT · NY

Our RI Services

✓ New Bedrock Well Drilling
✓ Submersible Pump Installation
✓ Pressure Tank Replacement
✓ High-Pressure HydroFracturing
✓ Whole-House Water Filtration
✓ Downhole Video Well Inspection
✓ 7-Day Emergency Dispatch
✓ Board of Health Permitting

Prevalent Rhode Island Water Parameters

⚠ Saltwater intrusion (coastal)
⚠ Iron & manganese
⚠ Nitrates (agricultural areas)
⚠ Hardness

New England Groundwater Fleet