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I I I I I I I I I I I I I I I I I I I Certain faults with existing water laws leave many practices open to question. 0n tracts 35 acres or larger, up to three households can be served by a single domestic well. This has led some to advancing the logic that a well should be granted for each 12+ acre tract. At the same time, a single well in many areas does not have the capacity to serve three units, On the forefl'ont is a totally new technology that may eliminate many land use planning axioms that are based upon soil capability limitations and water re- source constl'aints. For example, a system called "Pure Cycle" purifies domestic wastewatel' to the point of being completely potable and, thus, totally recyclable. The system is currently approved for use by the State Health Department. This means that, in effect, a user may not even require a well nor is effluent discharge a prob- lem. A large cistern periodically filled by a water truck could make a development self-sufficient in these areas, Essentially, all of these concepts centering around water resources lead one to believe that it is unwise to regulate land use on the basis of impacts to water resources. The burden of proof for such a regulation may rest with the regulator if taken to court. Instead, the solution must lie in discouraging development in 3n area with known sensitivities, yet providing the potential developer with the opportunity to prove how he may respond to and overcome potentially, but not cer- tain, adverse conditions, Individuals seeking a well permit should, therefore, provide an adequate assess- ment of the impact of the proposed well on underground and surface resources. Hhere an pa red by attached :)Ort and individual on-lot water supply system exists or is proposed, a report pre- a qualified ground-water geologist should be required. The report should be to the Envi ronmenta 1 Revi ew Report Format presented in Part II of thi s re- should at minimum include the following: Probability of success of wells Expected long term yield of such wells Expected depth to usable water Water recharge and right of acquisition 1) Tri buta ry 2) Nontributary Estimated size and yield of well Restrictions on well placement due to geologic hazards, easements, streams, pollutant sources, etc. Expected quantity, quality, dependability and pressure Impact of well on Parkville Water District 1) Diversion of water 2) Pollution a. b. c. d. e. f. g. h. Related to this is the septic tank/leach field system frequently used in low den- sity developments. If the system is properly engineered, few problems would be en- countered. Adequate regulations currently exist to control the construction of these systems. Factors to consider in the layout are as follows: a. Hydraulic absorption capacity b. Topography c. Location to wells d. Subsurface characteristics of the leaching field. Should consideration not be given to design, ground water contamination may result. 12