An observation well means a non-pumping, non-potable well used for measuring groundwater levels or potentiometric surface. Observation wells can be used to show that a well is obtaining water from an isolated aquifer, or perhaps that the aquifer is connected to other aquifers or surface water. Piezometers are excellent for capturing water flow, strata permeability, and depth of water pressure.

Roof Top Rain Water Harvesting What is Roof Top Rain Water Harvesting? Rooftop Rain Water Harvesting is the technique through which rain water is captured from the roof catchments and stored in reservoirs. Harvested rain water can be stored in sub-surface ground water reservoir by adopting artificial recharge techniques to meet the household needs through storage in tanks. The Main Objective of rooftop rain water harvesting is to make water available for future use. Capturing and storing rain water for use is particularly important in dryland, hilly, urban and coastal areas. In alluvial areas energy saving for 1m. rise in ground water level is around 0.40 kilo watt per hour. Need for Rooftop Rain Water Harvesting 1. To meet the ever increasing demand for water 2. To reduce the runoff which chokes storm drains 3. To avoid flooding of roads 4. To augment the ground water storage and control decline of water levels 5. To reduce ground water pollution 6. To improve the quality of ground water 7. To reduce the soil erosion 8. To supplement domestic water requirement during summer, drought etc. Advantages of Rain Water Harvesting 1. Provides self-sufficiency to your water supply 2. Reduces the cost for pumping of ground water 3. Provides high quality water, soft and low in minerals 4. Improves the quality of ground water through dilution when recharged to ground water 5. Reduces soil erosion in urban areas 6. The rooftop rain water harvesting is less expensive 7. Rainwater harvesting systems are simple which can be adopted by individuals 8. Rooftop rain water harvesting systems are easy to construct, operate and maintain 9. In hilly terrains, rain water harvesting is preferred 10. In saline or coastal areas, rain water provides good quality water and when recharged to ground water, it reduces salinity and also helps in maintaining balance between the fresh-saline water interface 11. In Islands, due to limited extent of fresh water aquifers, rain water harvesting is the most preferred source of water for domestic use 12. In desert, where rain fall is low, rain water harvesting has been providing relief to people

Allegiance Water Level Indicator Flat tape water level Indicator Enhanced Laser Marked Tape Features Durable PVDF non-stretch tape Improved electrical properties Thicker dog bone design prevents clinging to sides of the well Permanently laser marked every 1/100 ft or each mm The PVDF flat tape is laser marked every 1/100 ft or each mm; lengths up to 5000 ft (1500 m). New flat tape has increased tensile strength and electrical efficiency by using 6 strands of copper coated stainless steel and 13 strands of stainless steel in each conductor. The P7 Water Level Meter Probe is engineered to allow submersion to 1000 ft. (300 m). Sensor at the tip of the probe provides

“Rainy“ Rainwater Harvesting Filters Completely Indigenous and Patented Technology for Dual Intensity Rainwater Harvesting Filters called 'Rainy'. For groundwater recharging, our innovation uses an injection well equipped with “V-Wire Screens“ that enables replenishment of groundwater source. Rainwater is one of the purest source of water with less then 50mg/ litre of Total Dissolved Solids (TDS). Minimalistic, easy-to-install and easy to maintain Products. Reduction of Carbon Footprint and Recharge water source to avail clean water for consumption. Working Principle: When the rainwater along with dirt & debris flows by gravity through the downtake pipes, it enters into the filter and starts rotating in anticlockwise direction at the periphery of the upper housing, this enables it to flow into the SS-304 filter element placed in the lower housing in angular motion at specific speed & velocity, which creates cohesive force at low intensity & centrifugal force at high intensity of rainfall. In both situations, involving low & high intensity of rainfall, the working principle of the filter based on cohesive & centrifugal force respectively, aids the filter element to flush out dirt & debris automatically. The water then passes through the drain outlet and simultaneously diverts clean water into the sump/ recharging well through the clean water outlet, which can be used for reutilization or recharging of groundwater source. Special Features : What makes 'Rainy' unique? Dual Intensity Filters works on the principle of Cohesive & Centrifugal force. The open drain design does not allow stagnation of water and dirt particles. Works on Gravitation force (No external energy required). Cost effective and affordable. Compact in size and wall mounted. Inbuilt self-cleaning mechanism. Automatic flush out of dirt and debris. No consumables required. Flexibility in pipe connection to any angle. Tough UV stabilized high density polyethylene housing. Filter Element SS-304 Multi-Surface Screen food grade. All the material used are food grade and recyclable. Filter Pipe connections can be turned up to 360 Degrees allowing it to suit the given site conditions. Simple in connection, which any local plumber can easily install. The filter efficiency remains unchanged even with the variation of intensity of rainfall. The filters do not have any moving parts; there is no wear & tear of the filter allowing for long life span. Technology works on the Gravitational Principle so saves power (reduces the pumping of water from distant places & depths). Swirling movement of water is formed while ‘Rainy’ filters are under operation, this leads to aeration of water. Thus, increases the water quality. Dual Intensity Filters works on the principle of Cohesive & Centrifugal force. The open drain design does not allow stagnation of water and dirt particles. Works on Gravitation force (No external energy required). Cost effective and affordable. Compact in size and wall mounted. Inbuilt self-cleaning mechanism. Automatic flush out of dirt and debris. No consumables required. Flexibility in pipe connection to any angle. Tough UV stabilized high density polyethylene housing. Filter Element SS-304 Multi-Surface Screen food grade. All the material used are food grade and recyclable. Filter Pipe connections can be turned up to 360 Degrees allowing it to suit the given site conditions. Simple in connection, which any local plumber can easily install. The filter efficiency remains unchanged even with the variation of intensity of rainfall. The filters do not have any moving parts; there is no wear & tear of the filter allowing for long life span. Technology works on the Gravitational Principle so saves power (reduces the pumping of water from distant places & depths). Swirling movement of water is formed while ‘Rainy’ filters are under operation, this leads to aeration of water. Thus, increases the water quality.

Digital Water Level Recorder (DWLR) which can be used in piezometer wells as well as tubewells for measurement of water level data. Non-contact devices in Water level measurement are the next generation products in the water sector. Statometer uses an indigenously designed patented signal processing algorithms of acoustic waves for accurate measurements. Ideal solution for *Real-time measurement of fluctuations in water table *Central Ground Water Board(CGWB) NOC compliances *Determining efficiency of rain water harvesting systems *Planning crops and drought forecasting in agriculture Data communications GPRS/GSM Data visualization - Graphs & list view of data collected - Analytical tools for trend analysis - Location of wells on Google maps User configurable features - Roles and accessibility - Frequency setup* - Remote triggering* Data download options - CSV and xlsx format - Reports

Geophysical survey for Rainwater Harvesting, a number of years of experience and technical knowledge we are able to provide you the most suitable locations to drill a Borewell on your site. By using technically advanced equipment like Resistivity meters & Electromagnetic (EM) VLF instruments we provide high quality service with excellent execution. Before any Rainwater Harvesting System construction is done, we help you in identifying the nature of Soil Structure & what is the actual Depth to recharge Rainwater.

It is a shallow excavated trench filled with gravel or crushed stone that is designed to infiltrate stormwater though permeable soils into the groundwater aquifer. A percolation trench is similar to a dry well, which is typically an excavated hole filled with gravel. we are engaged to offer the best Percolating Well Service. The provided service is executed using the progressive techniques under the supervision of our brilliant professionals. Offered service is highly demanded among our clients, owing to their various associated features like promptness and on time execution.

CGWA Clearance Central Ground Water Board (CGWB) . Statement indicating position of pending cases received for NOC for ground water withdrawal. Statement showing list of project proposals to whom NOC for ground water withdrawal has been issued. The annual replenishable ground water resources availability plays an important role in defining the guidelines. The latest assessment of the state wise ground water resources as on 31.03.2009 is available at the Central Ground Water Board . As per the ground water resource estimates of 2009, out of the 5842 assessment units (Blocks, Mandals, Talukas, districts), 802 over-exploited units, 169 critical units, 523 semi-critical units, 4277 safe units and 71 saline units have been identified across the country by Central Ground Water Board. The Annual replenishable ground water resources have been estimated as 431 Billion Cubic Meters (bcm). The Net Ground Water Availability is 396 bcm and the overall stage of ground water development of the country is 61%. Therefore, prior permission/NOC from CGWA has to be obtained before construction of any Groundwater abstraction structure viz. Tube wells, Bore wells, Dug wells etc. Allegiance can offers its client the following services: Examining the area of the groundwater against availability Water requirement Availability of aquifer A Shallow aquifer B Deeper aquifer Status of the groundwater development of the area Preparation of proposal for augmentation of groundwater abstraction Preparation and implementation of water conservation measures Facilitation for obtaining NOC from CGWA, New Delhi

‘V’ Wire Injection Well Technology to Recharge Groundwater Source: • The Rain Water is lead through water channel and first reaches the silt trap, which allows for silt to accumulate in the chamber. The overflow water is lead into the injection well, passing through multilayer’s of Filtration media placed at the top of the injection well. The water is accommodated in a specially designed storage well, which creates water column, injecting large quantities of water into the deeper layers of the semi impervious earth’s strata through the Non Clogging V-Wire screens attached to the specifically designed percolator pipe, placed to a depth of 30 meters below the ground. The water column and the dual V-Wire Screen allow for the water to reach the dry joints, cracks, aquifers and recharge the ground water source. • This technology does not employ moving parts; the assured life span of the material is a minimum of twenty years. The maintenance cost involves desalting of the silt trap and replacement of filtration media once in five years. • The technology was adaptable to harvest rain water, irrespective of the presence of any bore well in place and also irrespective of terrain. The technology gave maximum flexibility to be used either in low lying areas or in upland conditions. • All materials used in this Technology are eco-friendly and recyclable. • Technology works on the Gravitational Principal Geomorphic profiling through vertical electrical Sounding of the soil strata is done to ascertain enormous quantity of water, quickly penetrating the rainwater into groundwater source. • The Provisioning of silt Trap fitted with Horizontal V wire Screen Filter eliminated the need of periodic maintenance and also facilitating significant volumes of rainwater to get into the recharging well.