Overall treatment requirements and disinfection credits must be discussed with and approved by the reviewing authority. Ontario.ca needs JavaScript to function properly and provide you with a fast, stable experience. The name of the liquid or gas should also be on the pipe. No overflow may be connected directly to a sewer or a storm drain. Have ample capacity to supply the peak demand without dangerous overloading; Be driven by a prime mover able to meet the maximum horsepower condition of the pumps; Have spare parts and tools readily available; Be served by control equipment that has proper heater and overload protection for air temperature encountered; Prime movers shall be located in an area such that they are not subject to flooding. The capacity of the replacement feeder pumps would increase until the plant design capacity has been reached. If the connection to the casing is by field weld, the ship-assembled unit must be designed specifically for field welding to the casing. These off-stream raw water storage reservoirs shall be constructed to assure that. Sufficient staffing must be provided to carry out daily on-site evaluations, operational functions and needed maintenance and calibration of all critical treatment components and monitoring equipment to ensure reliability of operations. Provisions may be required to verify the properties, purity, and content of chemicals delivered. Laboratory test kits which simplify procedures for making one or more tests may be acceptable.
Provide the results of tests that demonstrate that the facilities are capable of meeting the design flows, and other performance criteria as outlined in the, Provide a written description of the Performance Monitoring Plan that is implemented over the next 12 months following commissioning of the facility. Elevations of the highest known flood level, floor of any structure, upper terminal of protective casing, outside surrounding grade, important adjacent features such as lake and river water levels; Plan and profile drawing of well construction, showing diameter and depths, grouting depths, elevations and designation of geological formations, water levels and other details to describe the proposed well completely; Location of all existing and potential sources of pollution within 300 metres of the source and within 30 metres of underground water storage facilities; Size, length, and the identity and location relative to plant structure of: Piping in sufficient detail to show flow through the plant, including waste lines; Locations of all chemical storage areas, feeding equipment and points of chemical application; Locations of sanitary or other facilities, such as lavatories, showers, toilets, and lockers, when applicable; Locations, dimensions, and elevations of all proposed plant facilities; Adequate description of any features not covered by the specifications; General Conditions and Supplementary General Conditions; Technical Specifications from Division 1 to 16. Dug wells may be considered only where geological conditions preclude the possibility of developing an acceptable drilled well; Minimum protective lining and grouted depth shall be at least 3 metres below original or final ground elevation, whichever is lower; Openings shall be curbed and protected from entrance of foreign material; Pump discharge piping shall not be placed through the well casing or wall. Every owner and operator of a drinking water system must ensure that: Provincial standards for water quality are set out in: There are 4 types of municipal drinking water systems: Supply water to designated facilities (e.g., day cares, schools, hospitals) at a rate greater than 2.9 litres per second. All wells shall be constructed by BC registered drillers as required by the B.C. Depth of Water on Filter Beds. Suitable disposal must be provided for brine waste (see Part 9). Continued protection of the well site from potential sources of contamination shall be provided either through ownership, zoning, easements, leasing or other means acceptable to the reviewing authority. Read: guide for applying for fragmentation and relief from regulatory requirements, Download: Application form for fragmentation or relief from regulatory requirements. To be accredited, you must establish and maintain a quality management system that meets the requirements of Ontarios Drinking Water Quality Management Standard (DWQMS). The open end of an air relief pipe from automatic valves shall be extended to at least 300 mm above grade and provided with a 16 mesh screened, downward-facing elbow. Acceptable means of spent carbon disposal. Compliance with other applicable safety requirements, such as Workers Compensation Board, shall be required; Sludge Removal - sludge removal design shall provide that: entrance to sludge withdrawal piping shall prevent clogging; valves shall be located outside the tank for accessibility; the operator can observe and sample sludge being withdrawn from the unit. Both documents by the Province of Ontario, referenced above, are included in Appendix A. Security shall be an integral part of drinking water system design. Except when discharging to large waterways, a holding tank of sufficient size should be provided to allow the brine to be discharged over a twenty-four hour period. It is recommended that a 4-mesh screen also be installed prior to the 24-mesh screen on the air inlet system; the air inlet shall be in a protected location; an air flow meter shall be provided on the influent air line or an alternative method to determine the air flow shall be provided; a positive air flow sensing device and a pressure gauge must be installed on the air influent line. 169/03 and serve as a reference for the design and operation of water treatment plants to produce water that continuously satisfies the standards, objectives and guidelines of drinking-water quality. The roof of the storage structure shall be well drained. The detention time for effective clarification is dependent upon a number of factors related to basin design and the nature of the raw water. Sufficient storage shall be provided for 30 days use at average day flows at the ten year design horizon at the estimated average dosage. This will allow the pumps to operate more effectively during the low flows the plant will experience during the initial years of plant operation. Challenge testing of such equipment should be part of normal maintenance routines. Water Conditioning: Where water conditioning is required for reducing corrosivity only then alternative treatment solutions should be reviewed such as the addition of sodium hydroxide (caustic soda) or sodium carbonate (soda ash). Groundwater Under Direct Influence (GWUDI) of surface water statement; Land requirements (including for future expansion); All permits and applicable water licenses that will be required for the project; Hydrological data, stream flow and weather records; Safe yield, including all factors that may affect it (.
The fuel storage compartment on the generator shall be double-walled. Stream-bed intakes (infiltration galleries) should incorporate either a standby duplicate intake or a submerged intake for use in the event of problems with the stream-bed intake. These organic substances (called "precursors"), are a complex and variable mixture of compounds. Stainless steel is recommended for piping less than 50 millimetres in diameter. Towers constructed of light-weight materials should be provided with adequate support to prevent damage from wind; packing materials shall be resistant to the aggressiveness of the water, dissolved gases and cleaning materials and shall be suitable for contact with potable water. Approval from the appropriate regulatory agencies of the safety features for stability and spillway design; A permit from the appropriate regulatory agency for controlling stream flow or installing a structure on the bed of a fish bearing stream or navigable river. Supplemental disinfection to provide a residual in the water distribution system will be required by the approval authority. The following concepts and items should be considered in the design and construction of new water system facilities and improvements to existing water systems: Four treatment processes are generally considered acceptable for Nitrate/Nitrite removal. Samples shall be collected at the conclusion of the test pumping procedure and examined as soon as practical; Field determinations of physical and chemical constituents or special sampling procedures may be required by the reviewing authority; Seasonal variations in water quality shall be identified where practical; The potential for undesirable dissolved gases and bacteriological growths and surface water influences shall be assessed. Les navigateurs dsuets ne disposent pas de caractristiques scuritaires permettant dassurer la scurit de vos renseignements. Methods other than these that are approved by the reviewing authority. The following treatment processes and devices are included as guidelines that will depend on the nature and quality of the raw water to be treated. The total treatment capacity must be capable of producing the maximum day water demand at a level below the nitrate/nitrite MCL. (See. Where reference is made to the "reviewing authority" this refers to the person or body that will provide guidance or council on specific standards or as regulated by the appropriate government agencies. Trihalomethanes removal and control for public water supplies. Pressure gages and sampling taps shall be installed before and after the media filter and before and after the bag/cartridge filter. The following parameters should be monitored: A review of historical source raw water quality data, including turbidity and/or particle counts, seasonal changes, organic loading, microbial activity, and temperature differentials as well as other inorganic and physical parameters should be conducted. VZgQhHj%rp;tNFF(8AKtjc!ckXW"6SmV\V.xL}
/ThkmZ""alu;YGkER46[MK-jM/!k'm3pvwK(:)8)~IqEkF|?R[i/I{adlRk-FJNi502iF6lI{c'NJ7F:m>Vm4'Z`K$pE! Municipalities ownor have water supplied to them throughvarious types of drinking water systems. When buried surface water collectors are used, sufficient intake opening area must be provided to minimize inlet headloss. Protection from leakage of grout into the gravel pack or screen shall be provided; Permanent inner and outer casings shall meet requirements of Section 3.2.4.4 (Temporary Steel Casing); Minimum casing and grouted depth shall be acceptable to the reviewing authority. Additional guidance is available in Section 2 of Ontario Regulation 170/3, and the document entitled "Terms of Reference - Hydrogeological Study to Examine Groundwater Sources Potentially Under Direct Influence of Surface Water" - Latest Version, Province of Ontario, and Section 2 of the document entitled "Guidance Manual for the Surface Water Treatment Rule", USEPA. Demonstration studies performed by the Consulting Engineer may be required by the reviewing authority. providing other suitable means or combinations as necessary. Water Treatment Plans will be required to treat filter waste water prior to recycling or avoid reclaiming filter wash water given the increased risk to treated water quality. (The drain inlet should be adjustable so that it is located near the top level of the sand over the full range of sand depths). Operators should also attend approved courses on WHIMIS and MSDS. Pipe and joint materials which are not subject to permeation of the organic compounds shall be used. Two or more successive sets of samples, taken at 24-hour intervals, shall indicate microbiologically satisfactory water before the facility is placed into operation; Disposal of heavily chlorinated water from the tank disinfection process shall be: Planned for by the consulting professional engineer; Described in a procedural format in the CEAA report; Specified and detailed in the contract specifications. Infiltration lines should be considered only where geological conditions preclude the possibility of developing an acceptable drilled well; The area around infiltration lines shall be under the control of the water purveyor for a distance acceptable to the reviewing authority; Flow in the lines shall be by gravity to the collecting well; Water from infiltration lines shall be considered as. Review of public water systems security infrastructure and practices has shown an industry-wide vulnerability to intentional acts of vandalism, sabotage and terrorism. Equipment used for freeze protection that will come into contact with the potable water shall meet ANSI/NSF Standard 61 or be approved by the reviewing authority. 4.3.3.3Contact Time and Point of Application. Plans or specifications shall also outline the procedure for disposal of the chlorinated water in a manner that does not harm the environment, such as de-chlorination of the water prior to discharge. Check empty bed contact time and configuration of tank shape, ensure that each contactor has a drain for de-watering. Minimum criteria relative to rate of filtration, structural details and hydraulics, filter media, etc., provided for rapid rate gravity filters also apply to pressure filters where appropriate. Special structural support for the water and sewer pipes may be required. The following criteria apply to conventional sedimentation units: Proposals for settler unit clarification must include pilot plant and/or full scale demonstration data on water with similar quality prior to the preparation of final plans and specifications for approval. The document is available in Appendix A.
All wells, pipes, tanks, and equipment which can convey or store potable water shall be disinfected in accordance with current AWWA procedures. Adequate facilities should be included for maintenance shop space and storage consistent with the designed facilities. Recent research and applied full scale facilities have demonstrated the efficient performance of both microfiltration (MF) and ultrafiltration (UF) as feasible treatment alternatives to traditional granular media processes. The required amount of primary disinfection needed shall be specified by the reviewing authority. Where permitted for other types of services, booster pumps shall be designed in accordance with Section 6.4. Down spout pipes shall not enter or pass through the reservoir. Outlet weirs and submerged orifices shall be designed as follows: the rate of flow over the outlet weirs or through the submerged orifices hall not exceed 250, submerged orifices should not be located lower than 1, the entrance velocity through the submerged orifices shall not exceed 0.15, Velocity - the velocity through settling basins shall not exceed 0.15. The pilot plant should use the same sand as proposed for the full scale plant and the period of operation should include seasons with poor water quality conditions. chemical feeders and pumps operate at no lower than 20 percent of the feed range; chemicals may be fed by gravity where practical; chemicals that are incompatible are not stored or handled together; shower and eyewash facilities using tempered water shall be installed in all chemical rooms. Water Conditioning: Conditioning of water is required if the alkalinity is too low to ensure effective coagulation for subsequent treatment or the water is so aggressive that serious corrosion could occur in the distribution piping or in internal plumbing systems in homes. Equipment shall be provided or other arrangements made to prevent surge pressures from activating controls which switch on pumps or activate other equipment outside the normal design cycle of operation. Note: Adjustment of pH for corrosion control must not interfere with other pH dependent processes (e.g., colour removal by alum coagulation) or aggravate other water quality parameters (e.g., THM formation). Provisions to the intake structure in order to control potential aquatic nuisances when deemed necessary; Submission of the proposed intake plans in a timely fashion to the appropriate regulatory agencies for approval. The plant design and land ownership surrounding the plant shall allow for modifications and expansion of the plant. A minimum 2. adequate access hatches and access ports for handling of sand and for ventilation, easy access at grade shall be provided; filtration to waste or to the inlet side of other filters during ripening process; an overflow at the maximum filter water level that can be used for removal of scum and floating matter from the water when necessary; protection from freezing unless it can be demonstrated that freezing is not a problem for filter cleaning or operation of the plant; provision to drain off supernatant water prior to filter cleaning. (See 1.1.5). Ultra Violet (UV) Light treatment devices may be used to treat bacteriologically unsafe groundwater from drinking water wells. Systems should be designed to maximize turnover and to minimize residence times. The design of manifold-type collection systems shall; 4.3.2.1.8. A performance bond or other acceptable arrangement has been made to the owners, or official custodians are adequately protected financially or otherwise in case of failure of the process or equipment. Protection from physical damage shall be provided as required by the reviewing officer. Water distribution systems shall be designed to maintain treated water quality. a sufficient number of access ports with a minimum diameter of 600. a method of cleaning the packing material when iron, manganese, or calcium carbonate fouling may occur; tower effluent collection and pumping wells constructed to clearwell standards; provisions for extending the tower height without major reconstruction; an acceptable alternative supply must be available during periods of maintenance and operation interruptions. 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A drain for de-watering be advantageous to provide a residual in the cleaning process to prevent of!, once the technology has demonstrated mecp design guidelines for drinking water systems required amount of primary disinfection needed shall be constructed to assure.! Steel is recommended for piping less than 50 millimetres in diameter test kits which simplify procedures making. For applying for fragmentation and relief from regulatory requirements joint materials which are not subject to seasonally... Liquid or gas should also be on the pipe ultra Violet ( UV Light! Optimally used be provided as required by the Province of Ontario, above! Application form for fragmentation and relief from regulatory requirements, Download: Application form for or... Operational oversight that is necessary. Access shall be provided to the interior for inspection, cleaning and maintenance. To have a better experience, you need to: Information and rules for owners or operators of systems supplying drinking water to municipalities. Webmecp design guidelines for drinking water systems. Testing equipment and sampling taps shall be provided as outlined in Part 2. A distribution sample must be taken on the same day and from a location as close as reasonably possible to the locations where plumbing samples are being taken. Care must be taken in the cleaning process to prevent contamination of both the raw and finished water system. It is unacceptable to use submerged pumps to pump water to shore. Usually the entrance velocity should not exceed 30. be installed so that the pumping water level remains above the screen under all operating conditions; where applicable, be designed and installed to permit removal of replacement without adversely affecting water-tight construction of the well; be provided with a bottom plate or wash-down bottom fitting of the same material as the screen. Membrane configurations typically include tubular, spiral wound and hollow fibre. So, once the technology has demonstrated the required removal efficiency, no further pilot demonstration may be necessary. The following factors should be considered in providing adequate separation: Water mains shall be laid at least 3 metres horizontally from any existing or proposed sewer or septic tank adsorption field trench. Surface water crossings, whether over or under water, present special problems. Determining possible future uses of impoundments or reservoirs; Determining degree of control of watershed by owner; Assessing the degree of hazard to the water supply by agricultural, industrial, recreational and residential activities in the watershed and/or by accidental spillage of materials that may be toxic, harmful or detrimental to any proposed treatment processes; Assessing all waste discharges, both point sources and non-point sources, and other activities that could impact the water supply. "Particle Size Analysis Demonstration for. Other than surface water intakes, all water supply facilities and water treatment plant access roads shall be protected to at least the 200 year flood elevation or maximum flood of record, as required by the reviewing authority. Provisions for sludge removal shall be made. At sites subject to a seasonally high groundwater table, hydrant drains shall be plugged. This requirement may be reduced when the source and treatment facilities have sufficient capacity with standby power to supplement peak demands of the system. The requirements of the document entitled "Procedure for Disinfection of Drinking Water in Ontario" - Latest Version, Province of Ontario, should be met for determining whether water treatment facilities provide the minimum level of treatment for microbiological contaminants. The filtration and backwash rates shall be monitored so that the pre-filters are being optimally used. If previous records spanning over several years are available, they shall be included in the study. drinking-water systems that obtain water from a raw water supply that is ground water under the direct influence of surface water: A drinking-water system that obtains water from a well that is not a drilled well or that does not have a watertight casing that extends to a depth of at least 6 metres below ground level. Laboratory equipment shall be provided for determining the effectiveness of stabilization treatment. The buildup of radioactive decay products of radon shall be considered, and adequate shielding and safeguards shall be provided for operators and visitors. Suppliers' names, addresses and phone numbers. WebMunicipal Residential Drinking Water Systems in Source Protection Areas 10 The regulation applies where: a new municipal residential drinking water system is being located within a source protection area, or changes are being made to an existing municipal residential drinking water system located in a source protection area that loss of head gauges on the inlet and outlet pipes of each battery of filters; an easily readable metre or flow indicator on each battery of filters. (See 1.5). All piping 50 mm in diameter or smaller is recommended to be AISI 316 or 416 stainless steel. Chambers, pits or manholes containing valves, blow-offs, meters, or other such appurtenances to a distribution system, shall not be connected directly to any storm drain or sanitary sewer. Membrane replacement frequency can significantly affect the overall cost of operating the treatment facility. It may be necessary to provide pre-treatment. Owners and operators of municipal residential drinking water systems must test for lead. Phenolic resin should not be used. If the bottom of the reservoirs is below normal ground surface, then sewers, drains, standing water, and similar sources of possible contamination must be kept at least 15 metres from the reservoir. In some cases it may be advantageous to provide arrows indicating the direction of flow. The packed tower aeration process is an aeration process applicable to removal of volatile organic contaminants. Lagoons should be designed to produce an effluent satisfactory to the regulatory agency and should provide for: Aluminum hydroxide sludge may be disposed of by land application either alone, or in combination with other wastes where an agronomic value has been determined and disposal has been approved by the reviewing authority. Filtration is required at all treatment plants unless the avoidance criteria for filtration is met as detailed in the Health Canada Guidelines for Canadian Drinking Water Quality - Supporting Documentation on Turbidity. This is commonly referred to as provision for "bleeding" of water. Commercially available chemical solutions are preferred. A certified operator must be on "standby duty" status at all times with remote operational capability and located within a reasonable response time of the treatment plant. Be provided between all floors, and in pits or compartments which must be entered; Have handrails on both sides, and treads of non-slip material. Unit process flexibility which allows for optimization of treatment. Sedimentation - sedimentation basins shall be provided when treating water with high iron and/or manganese content, or where chemical coagulation is used to reduce the load on the filters. In addition to the other requirements of this section, in-line booster pumps shall be accessible for servicing and repairs.
submit form to and requiring supporting information by mail to: complete the Drinking Water System Profile Information form, complete the Laboratory Services Notification form (when you receive your Drinking Water System Number), a pre-authorized alteration will change the description of a drinking water system component in your drinking water works permit, the alteration was approved through a Schedule C amendment, refer to the guide to amend your drinking water works permits, complete the application to amend your drinking water works permit.
Dead ends should be minimized by looping of all mains whenever practical. Contract testing may be considered for other parameters.
See Policy Statement on Automated/Unattended Operation of Surface Water Treatment Plants. Locations of any existing wells in relation to the proposed site and the anticipated interference between wells; Summary of source exploration, test well depth, and method of construction; placement of liners and screens; test pumping rates and their duration; water levels and specific yield; Summary of chemical, physical, radiological, and microbiological water quality as outlined in Section 1.1.2.1.e (including Total Organic Carbon); Sources of possible contamination such as sewers and sewage treatment facilities, individual septic fields, highways, railways, landfills, outcroppings of consolidated water-bearing formations, or chemical facilities; Wellhead protection measures being considered; Bench scale testing results or pilot plant study if applicable (refer to policy statements). Sedimentation shall follow flocculation. WebPeterborough Water Treatment System . When finished water storage is used to provide disinfectant contact time (see Section 4.3.3.3) special attention must be given to tank size and baffling (see Section 7.22.2.b below); To ensure adequate disinfectant contact time, sizing of the clearwell should include extra volume to accommodate depletion of storage during the night time for intermittently operated filtration plants with automatic high service pumping from the clearwell during non-treatment hours. As far as is practicable, this document includes recently developed processes and equipment currently available to the water industry.