What is the difference between drilling in the Highlands vs. the Hartford Basin in Connecticut?

The Eastern and Western Highlands of Connecticut feature dense crystalline granite, gneiss, and schist requiring high-pressure pneumatic hammer drilling into deep fractures (150–400+ ft). In contrast, the central Hartford Basin is underlain by sedimentary red sandstone, shale, and basalt trap rock. While Hartford Basin wells are often shallower, they frequently exhibit higher mineral hardness and dissolved iron requiring ion-exchange filtration.

Why is uranium testing recommended for Litchfield County wells?

Northwest Connecticut, particularly Litchfield County, contains localized pockets of granite and pegmatite with naturally occurring uraninite minerals. Ingesting dissolved uranium over long periods poses kidney toxicity risks. CT DPH recommends testing for uranium in private wells. Ogden Wells provides specialized certified laboratory testing and installs strong-acid cation exchange or reverse osmosis systems that effectively remove uranium.

What are Connecticut state setback requirements for private wells?

The Connecticut Public Health Code (Section 19-13-B51) enforces strict sanitary setbacks: 75 feet from septic tanks and soil absorption systems for wells yielding under 10 GPM, and 100 to 200 feet for higher-capacity wells. Municipal health districts (such as Farmington Valley or Torrington Area Health) issue drilling permits, which Ogden Wells coordinates from site plan to completion.

Regional Service Territory — Connecticut

Water Wells & Groundwater Services in Connecticut

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

Connecticut Hydrogeology & Well Drilling Conditions

Connecticut's geology creates two distinct drilling environments. The Eastern and Western Highlands feature the same hard crystalline bedrock as Massachusetts, requiring deep bedrock wells with good long-term yield. The Hartford Basin (Hartford, Middletown, New Haven corridor) is dominated by sedimentary and volcanic rock, sometimes producing wells with poorer yield and more variable water quality. CT DEEP licenses well drillers and requires permits prior to drilling in most municipalities.

Dominant Aquifer

Bedrock and Gneiss (Eastern/Western Highlands)

Typical Well Depth

150–400 ft for bedrock; Hartford Basin wells can be shallower (75–200 ft)

Bedrock Formations

Eastern and Western Highlands: granite/gneiss/schist. Hartford Basin: sandstone, basalt, shale

Drinking Water Quality & Bedrock Contaminant Profiles in Connecticut

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

Iron & Manganese

Geological Cause: Widespread in CT bedrock wells; oxidizes in air causing orange/black staining

Engineered Solution: Greensand filter with potassium permanganate or air injection + contact tank

Uranium

Geological Cause: Elevated in northwest CT (Litchfield County) granitic formations

Engineered Solution: Strong acid cation exchange softener or reverse osmosis

Radon

Geological Cause: Connecticut's granitic bedrock releases radon; levels highest in eastern and western towns

Engineered Solution: Point-of-Entry aeration or activated carbon filter

Low pH

Geological Cause: Acidic water from granitic terrain corrodes copper pipes and fixtures

Engineered Solution: Calcite neutralizer filter; soda ash feed for very low pH situations

Connecticut Well Permitting, Setbacks & Sanitary Code Compliance

CT DEEP and local health departments regulate well construction. Licensed driller required. Many CT municipalities require a local permit in addition to state licensing. We handle all permitting.

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 Connecticut

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 Connecticut:

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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 Connecticut

FarmingtonSimsburyGranbyCantonAvonLitchfieldTorringtonGoshenCornwallNorfolkWoodburyRoxburyWashingtonShermanTollandEllingtonBoltonAndoverMansfieldPomfretWoodstock+ all regional Connecticut communities

💡 Litchfield County CT has elevated uranium in wells — we always recommend uranium testing for new wells in northwest Connecticut.

Northeast Groundwater Territory

New England & New York Regional Coverage

Active drilling licenses, hydrofracturing rigs, and 7-day emergency pump crews dispatched throughout Connecticut 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 Connecticut

Get a Free Estimate

Fully licensed in Connecticut. 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 CT 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 Connecticut Water Parameters

⚠ Iron & manganese
⚠ Low pH
⚠ Hardness
⚠ Uranium (northwest CT)
⚠ Radon

New England Groundwater Fleet