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Michael Papay, REHS. Lee County Environmental Health Private Wells Septic Systems (919) 718-4641. Private Water Supply Wells . Types of Wells (in Lee County). Dug Bored Drilled. Dug Well. Literally “hand dug” Mineralogy from the soil Considered unsafe for drinking water

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Michael papay rehs

Michael Papay, REHS

Lee County Environmental Health

Private Wells

Septic Systems

(919) 718-4641


Private water supply wells

Private Water Supply Wells


Types of wells in lee county

Types of Wells (in Lee County)

  • Dug

  • Bored

  • Drilled


Dug well

Dug Well

  • Literally “hand dug”

  • Mineralogy from the soil

  • Considered unsafe for drinking water

    • Not protected from surface water intrusion

    • No casing

    • Rock-lined or un-lined walls

    • Water source very shallow (near ground surface)

    • Potential to transmit contaminants deeper


Bored well

Bored Well

  • 20- to 24-inches wide

  • Shallow, max 90 ft. (generally 35-ish)

  • Concrete casing / Tile casing (grout?)

  • Mineralogy from soil (& weathered rock)

  • Often coliform + (= unsafe)

    • Water source near ground surface

    • Root intrusion between casing sections

    • Potential to transmit contaminants deeper


Drilled well

Drilled Well

  • Penetrates consolidated rock

  • Deep (100 – 400 feet, or more)

  • 6-inch casing (steel or PVC)

  • Mineralogy from the rock that holds the water


Lee county private water supply well program

Lee County Private Water Supply Well Program

  • Permitting & Inspection

    • New

    • Repair

  • Sampling

    • New Wells

    • Existing Wells


Sampling

Sampling

  • New Well Standard Kit

    • Microbiological

    • Inorganic

    • Nitrates/Nitrites

  • Individual Sample Types

    • Microbiological

    • Inorganic

    • Nitrates/Nitrites

    • Pesticides

    • Petroleum

      • VOCs

      • Extractables


Microbiological

Microbiological

  • Coliform

    • Indicate the well is contaminated

    • If these are present then nastier microbes might be present

  • Fecal Coliform

    • From animal waste/poo


Inorganic analysis

Inorganic Analysis

  • Arsenic

  • Barium

  • Cadmium

  • Calcium

  • Chloride

  • Chromium

  • Copper

  • Fluoride

  • Iron

  • Lead

  • Magnesium

  • Manganese

  • Mercury

  • Nitrate/Nitrite

  • pH

  • Selenium

  • Silver

  • Sodium

  • Sulfate

  • Total Alkalinity

  • Total Hardness

  • Zinc


Laws and rules for private water supply wells

Laws and Rules for Private Water Supply Wells

  • 40 CFR 141.2 (Definitions)

  • G.S. 87 Article 7 (N.C. Well Construction Act)

  • G.S. 130A Article 10 (N.C. Drinking Water Act)

  • 15A NCAC 02C .0100 (Well Constr. Standards)

  • 15A NCAC 02C .0300 (Permitting & Inspection)

  • 15A NCAC 18C .0100 (Protection of Public Water Supplies)


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