Rhode Island Water Well Depth & Drilling Cost Guide
Authoritative hydrogeological intelligence for Rhode Island. Regulated by the Rhode Island Department of Environmental Management (RIDEM). The statewide median drilling depth is 220 feet (ranging 60–480 ft) with an average drilling cost of $50 per foot ($36 to $78/ft).
Quick Hydrogeological Fact Sheet: Rhode Island
To reach potable water in Rhode Island, residential wells require drilling an average of 220 feet deep. Total turnkey installation costs average $12,800 USD for a completed 6-inch casing well, 1.5 HP submersible pump, pressure tank, and state permits. The standing static water table sits at approximately 28 feet below surface level, producing a reliable average flow rate of 12 GPM across the primary Narragansett Basin Sedimentary Aquifer.
Rhode Island County-Level Well Logs & Average Depths
Official USGS hydrogeological monitoring stations, static levels, and driller completion records.
| County Name | Median Depth (ft) | Avg Cost / Foot | Typical Yield | Primary Aquifer | Local Action |
|---|---|---|---|---|---|
| Providence County | 230 ft | $52 /ft | 10 GPM | Crystalline Bedrock |
|
| Washington County | 160 ft | $45 /ft | 18 GPM | Stratified Drift Sand |
💰 Estimated Turnkey Cost Itemization in Rhode Island
Component-by-component breakdown for a standard residential water well (220 ft average).
| System Component | Specification in Rhode Island | Unit Cost | Estimated Subtotal |
|---|---|---|---|
| Borehole Drilling & Sanitary Casing | 220 ft depth with standard 6" PVC/Steel Casing & Drive Shoe | $50 /ft | $11,000 USD |
| Submersible Pump & Drop Pipe | 1.0 HP – 1.5 HP Stainless Submersible Pump with 12-gauge electrical drop cable | Turnkey Pump Unit | $2,250 USD |
| Pressure Tank & Control Switch | 40-gallon Captive Air Pressure Tank, 40/60 PSI Pressure Switch & Gauge | Standard Assembly | $1,200 USD |
| State Permits, Sanitary Grouting & Lab Water Testing | Mandatory Rhode Island Department of Environmental Management (RIDEM) permit, bentonite surface seal, and EPA drinking panel | State Fee + Lab | $600 USD |
| TOTAL ESTIMATED TURNKEY INVESTMENT | Includes excavation, drilling, plumbing hookup, and water inspection | $12,800 USD | |
Rhode Island Aquifers & Subsurface Geology
Glacial till and stratified sand/gravel over fractured crystalline and sedimentary bedrock
Water Quality & Recommended Filtration
⚖️ Rhode Island Well Drilling Regulations & Legal Setbacks
Calculate Drilling Cost in Rhode Island
Pre-loaded with Rhode Island median depth (220 ft) and average cost ($50/ft).
Frequently Asked Questions: Drilling Wells in Rhode Island
1. How deep do you usually have to drill for water in Rhode Island?
Across Rhode Island, the median residential water well is drilled to 220 feet. However, shallow alluvial wells can hit water as high as 60 feet, while deep bedrock or limestone aquifer wells may require drilling down to 480 feet to reach sufficient pressure and yield.
2. How much does a complete water well cost in Rhode Island?
On average, homeowners in Rhode Island invest $12,800 USD for a complete turnkey system. Drilling alone costs $50 per foot (ranging $36–$78/ft), while submersible pumps, pressure tanks, state permit fees ($150), and electrical hookups comprise the remaining balance.
3. What is the required setback from septic tanks in Rhode Island?
State health mandates overseen by the Rhode Island Department of Environmental Management (RIDEM) require a minimum separation distance of 100 feet from any septic tank, leach field, or potential contamination source, plus at least 25 feet from adjacent property boundaries.
4. What is the groundwater quality like in Rhode Island?
Wells in Rhode Island typically yield water with a hardness reading around 70 PPM and an average pH of 6.4. Key minerals present in natural groundwater include Iron, Manganese, Low pH Acidity. The recommended standard filtration configuration is: Calcite Acid Neutralizer + Iron Filter.
🗺️ Neighboring & Regional Groundwater Guides
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