BOB BROZ UNIVERSITY OF MISSOURI EXTENSION (573) ISE #78 WATER MANAGEMENT STRATEGIES FOR DROUGHT MITIGATION AND SUSTAINABLE AGRICULTURAL PRODUCTION Private Water Wells Cost in Missouri

Wellhead Protection Missouri had new well installation regulations go into affect March 1995 This gave standards for well location and well construction. Many older wells were grandfathered in All new wells must meet the new standards Approximately 6,000 new wells drilled every year.  Serves approximately 890,000 citizens  86% of private wells are drilled.

It is important to understand the geology of the state to have an idea of how much groundwater is available. The availability of good quality water does dictate number of businesses, individuals, etc. that can locate in an area.

Emergency Water Source Development Program Over 1800 wells installed for either livestock or irrigation. Average cost on livestock water supply $4,800  Average depth was 410 feet Average cost on irrigation water supply $12,700  Average depth was 105 feet

Average Cost for Livestock Well Pressure tank $ Submersible pump $1, Jetpump $ Water well casing $9.23/ft Water well drilling $6.44/ft Water well lining $5.84/ft Water well misc. $ Well house $652.10

Options for Livestock Wells Solar panel and pump 100 $2, Solar panel and pump 300$3, Solar panel and pump >300$3, NW Large diameter wells $95.00/ft Solar water storage tank gal $ Solar water storage tank gal $ Solar water storage tank gal $930.00

Average cost for Irrigation Well Pressure tank $ Submersible pump $1, Water well casing $9.23/ft Water well drilling $6.44/ft Water well lining $5.84/ft Water well misc. $ Well house $ Irrigation well drilling $65.00/ft Turbine pump $5, Power unit $12, Irrigation submersible pump $4,000.00

Approximate cost Hourly rate for Boom Truck $150/hr. Drilling of hole $6.50/ft 6” casing installed $11.00/ft Grout Seal required (15 bags)$50.00 /bag Pump, electrical, pressure tank, controls $3,710  Varies with depth of well Upgrade to 20 gpm 3.0 hp pump$2,280

Components of pump package Pump package  1.5 hp pump (10 gpm)  80 PVC drop pipe with couplings  10/3 submersible electrical cable  Pressure tank  50 ft pipe to hydrant  Electrical control package  Environmental well seal and pitless adapter subtotal $3711

600 ft Drilled Well with no complication Drilling $3,900 PVC casing $1,100 Drive shoe and grout seal$750 Certification and Chlorination$ hp Submersible pump package $3,700 Labor $1,250 Tax $400 Total$11,200

Complications can add to the cost 4” PVC $6/ft (shale/caving in) 10” surface $25/ft (sand and gravel/caving in) 6” steel $16/ft (unstable geological conditions) $150 each 2” waterline $4/ft Extra time on Boom Truck or digging equipment $150/hr.

Well construction basics: Well casing – 6 inches diameter Casing joints – water tight joints Vertical extension – well casing shall extend at least one foot about the finished surface grade (2 feet above maximum known floodwater elevation if in a flood plain) Depth of casing – to such depth as may be necessary to exclude contaminants Grouting – ensure that the annular space is sealed and that the casing does not leak.

Review state regulations on proper wellhead design and installation Should be 1 foot above the surface casing depth will depend on soils and location

Well Construction basics: Connections (above grade) – shall be 1 foot above finished grade and constructed to exclude dirt and other foreign matter from entering the well. Every well shall be maintained by the owner in a condition where it will conserve and protect the groundwater resources and where it will not be a source or channel of contamination or pollution to the water supply of the well or any aquifer.

Well Construction Basics: Construction requirements are based on well yield, use of well, and the region in which your well is located. And vary throughout the state according to the geology of the region. Always use a permitted driller when drilling or repairing a well.

Wellhead Protection Irrigation wells  200 feet from sewer lines, septic tanks, lateral fields, feed lots, barnyards, fuel storage, fertilizer and pesticide storage.  200 feet from well producing potable water  15 feet or more from overhead electrical distribution line  Fuel, fertilizer and pesticide tanks up to 1,000 gallons are allowed at well while irrigating and chemigating but must be removed from well site when not in use

Wellhead protection

New or Reconditioned? Depending on condition of an older well it may be cost effective to recondition it instead of drilling a new well. Check for depth, casing condition, wellhead protection, gpm flow, location. If old well can’t be properly reconditioned it should be properly plugged.

We still use the old well as a back up.

Plugging Abandoned Wells Any well in a state of disrepair, obtaining groundwater is impractical and which has not been in use for 2 years or more Permanent Abandonment of Wells  Rules found at 10 CSR –  “Eliminating an Unnecessary Risk: Abandoned Wells and Cisterns” can down load from web -

Questions and contacts Bob Broz Monitoring well website: ymonitor.htm ymonitor.htm Interactive map to groundwater observation well information and real time data. Well Information Management Systems