Water Treatment Equipment Manufacturer



Lakeside Water LWS Series water filters shall be designed specifically for one or more of the following: Iron, Manganese, Acid Neutralization, Sediment, Taste/Odor, Organics and Chlorine reductions. Provide as indicated a factory assembled vertical pressure type filter system shipped with manifold piping attached to the filter tank for ease of installation and start up. The system shall be of an approved design as fabricated by a manufacturer regularly engaged in the production of water treatment equipment for 20 years. All equipment and materials shall be supplied in compliance with the specifications as intended for a complete and operational system.

The system specifications are based on LWS


Influent Water Analysis
Total Hardness ___________________ GPG as CaCO3
Iron (Fe) ___________________ ppm as Fe
Manganese __________ ppm
Free Chlorine _______ ppm
Turbidity (NTU) ___________________
pH ___________________


Continuous System Flow & Pressure Drop ____ GPM @ ____ psi
Peak System Flow & Pressure Drop ____ GPM @ ____ psi
Daily Water Usage __________ Gallons/Day
Daily Hours of Water Demand __________ Hours/Day
Operating Temperature Range ______ Min. _____ Max. F
Operating Pressure Range ______ Min. _____ Max. PSIG
Electrical Requirements Amps____ Volts ____ HZ.______ Phase_______


Filter Tanks Qty. _____ Diameter____ Inches/Side- shell_____ Inches
Service Valves Size _____ Inches Type ______
Filter Media Type __________ Cubic Feet/Tank Qty. ______ Cubic Feet/ Total _________
Regeneration Type (Time Clock) _____ (Metered) _____
(DP) _____ (Other________________)
Water Meter (s) Qty ____ Size ____ (Inches) Type_________________


The filter vessel shall be electric welded pressure vessels constructed of heavy gauge low carbon steel conforming to non-code construction. The vessels shall be in accordance with ASME section VIII designed for 100 PSIG working pressure and factory tested at 150 psig. A standard FDA approved epoxy lining of 10-12 DFT mil is applied internally and 6-8 mils DFT saftey blue finish coating applied over the exterior of the vessel. ANSI/NSF standard 61 certified coatings shall apply. The vessels shall be sized to allow 50% expansion during backwash without media loss.  The tanks shall have threaded or flanged connections and include an 11x15 inch manhole in the top head and a 4x6 inch handhole in lower side shell.  Support legs shall be the strap-type permanently welded to the lower tank head on tanks with 20" diameter through 42" diameter. Structural angle legs welded to the tank side shell shall be provided on tanks 48" through 72" diameter tanks. Tank options shall include vessels be in accordance with ASME section VIII. Seismic zone 4 rated vessel supports with wet stamp calculations shall be available from manufacturer.


The upper distributor system shall be a single point baffle constructed of schedule 80 PVC on tanks 42" and smaller, and a four point baffle on 48" and larger for effective distribution.


Softeners with 72 inch diameter tanks shall be equipped with the hub and radial design distribution system. The individual radial arms shall be constructed of high impact SDR material slotted 0.010" to prevent media loss. Larger diameter tanks shall include a header lateral distributor system.  The header shall be constructed of galvanized steel and SCH80 PVC for strength and corrosion resistance. The laterals shall be schedule 80 PVC and shall be fitted with individual non-clogging segmented distributors. 


Choose one of the following. The media shall not add color to the water and must comply with FDA regulations paragraph 173:25 and be approved by the U.S. Department of Agriculture.

Manganese Greensand

The filter bed shall be provided for iron, manganese and suspended solids removal. The media has an effective size of 0.3 to 0.35mm and filter requires a minimum bed depth of 30 inches. Regeneration with potassium permanganate is needed for efficient iron and manganese removal.

Manganese Greensand and Anthracite

A dual-media filter bed shall be provided for efficient iron, manganese and suspended solids removal. The filter bed consists of two layers of media to reduce filter pressure drop, provide deep bed filtration and long filter runs. The first layer will consist of hard coal anthracite with an effective size of 0.6 to 0.8mm. The second layer consists of manganese greensand with an effective size of 0.3 to 0.35mm. Total bed depth shall be a minimum of 30 inches. The manganese greensand can be regenerated with potassium permanganate and chlorine for efficient iron and manganese removal.

Activated Carbon

An activated carbon filter will be provided for chlorine, organic, color, taste and odor removal. The carbon shall be manufactured from bituminous coal with a 12 x 40 mesh particle size and has approximately 900 square meters or surface area per gram. The carbon will have a minimum iodine number of 800 and a minimum abrasion number of 75. The carbon bed depth shall be a minimum of 30 inches.


The multi-media filter bed will be provided for superior quality effluent and long filter runs.

The filter bed shall be constructed of graded layers of media to provide deep bed filtration, low pressure drop and the ability to remove particles down to 10 microns. The top layer will consist of hard coal anthracite, with an effective size of 0.6 to 0.8 mm. The second layer consists of sand with an effective size of 0.45 to 0.55mm. The third layer consists of 30 to 40 mesh garnet with the effective size of 0.25 to 0.42 mm. The fourth layer consists of 8-12 mesh garnet with an effective size of 1.4mm. Total bed depth shall be a minimum of 30 inches.

Filter AG

The filter media shall be a non-hydrous aluminum silicate with irregular surfaces characteristics affording maximum removal of suspended matter throughout the filter bed. The media shall not be affected by chlorine nor require any type of chemical regeneration. Particle retention shall be forty (40) micron or larger.


The filter media shall be crushed and screened white marble material. The media shall slowly dissolve in contact with acidic water to elevate the pH and increase alkalinity. pH elevation to the range 6.8-8.5 shall be accomplished without the use of chemical additives.


Manganese greensand requires regeneration with potassium permanganate in order to provide efficient oxidation/filtration of iron and manganese. Chose one of the following:

Continuous Feed Regeneration

An inline flow meter with magnetically operated read switches to provide a contact closure proportional to system flow rate. Meter 3/4" through 3" shall be a cast brass body with direct multijet high-speed impeller. Meters 4" and above shall be a paddle type with saddle installation fitting.

A diaphragm type chemical feed pump shall be compatible to the type of chemical pump properly sized for the system flow rate. The pump shall automatically adjust the frequency of stroke based on contacts supplied by the inline flow meter specified in Section 7.1.0. The wet end of the pump required.

A suitably sized polyethylene tank assembly shall be provided with a minimum capacity of 30 gallons. The tank shall allow for mounting of the pump and contain a straightening tube to be run over the pump suction tubing

A suitably sized agitator shall be provided for mixing and di solving the chemicals. The meter shall be totally enclosed fan cooled with an internal on-off switch. The shaft and impeller on the agitator shall be stainless steel with an epoxy coating suitable for the service. The agitator shall be mounted directly to the tank assembly specified in Section 7.1.2.

Batch Regeneration
A chemical regeneration tank shall be supplied to hold potassium permanganate for regeneration of the manganese greensand bed. Tank size diameter _______inches. Height _______ inches with draw assembly and eductor for periodic batch regeneration.


The main operating valves shall be a nest of individual diaphragm valves on vessels with 4" piping and under. These valves shall have cast iron bodies, Buna-N diaphragm and brass internal parts. The valve shall be slow opening and closing, and free of water hammer. On softeners with piping larger than 4", the inlet/outlet service valves shall be butterfly valves, and shall have epoxy-coated cast iron lug style bodies, EPDM seats, aluminum-bronze discs, stainless steel stems and double-acting pneumatic actuators. All operating valves shall be slow opening and closing, and free of water hammer. There shall be no contact of dissimilar metals within the valves and no special tools shall be required to service the valves. Diaphragm valves can be operated either hydraulically or pneumatically. Systems with butterfly valves shall require a clean source of
Instrument air (80 psig minimum).

(1" to 3")

The main operating valves shall be a nest of individual diaphragm valves. The valve shall have glass-filled Noryl thermoplastic bodies, Buna-N diaphragm, EPDM disc & seals and PVC end connections. The valve shall be slow opening and closing, and free of water hammer. There shall be no special tools required to service the valves. Valves can be operated either hydraulically or pneumatically.


The main operating valve nest shall be a combination of diaphragm and butterfly valves. This shall apply to steel units over 4" and PVC units over 3". The butterfly valves shall have epoxy-coated cast iron lug style bodies, EPDM seats, aluminum-bronze discs, stainless steel stems and double-acting pneumatic actuators. A clean source of instrument air source is required (80 psig minimum).


The main operating valves and manifold piping shall be factory assembled and shipped attached to the resin tank for ease of installation and start-up. Piping 4" and under shall be Schedule 40 galvanized steel. Galvanized fittings shall be standard Class 150 threaded malleable iron. Piping over 4" shall be schedule 40 black carbon steel, and fittings Class 125 flanged cast iron with standard mill finish. Boiler drain valves and rack style pressure gauge packages shall be provided for fast and easy diagnostics and service. Sample valves shall be provided on the inlet and outlet piping or diaphragm valves.  The standard pressure gauges are 2.5 inch diameter liquid filled with brass wetted parts and stainless steel case.  The sample valves are ¼ inch PVC.


An automatic backwash control shall be provided to maintain a proper backwash and fast flush flows over a wide variation of operating pressure. Controller shall contain no moving parts, and require no field adjustment.


Time Clock (single) Option

The 110 volt electronic cycle controller shall be mounted in a NEMA 4X fiberglass enclosure with a microprocessor that is adjustable to initiate regeneration at any hour of the day and any day of the week.

Electronic cycle controller (Twin Alt.) Option

A microprocessor shall provide single, twin, system capabilities. The controller shall feature single, twin alternating, progressive demand and parallel application options. Multiple tank applications, sequential regeneration and user friendly programming shall be the premiere feature. Five programmable cycle adjustments shall be standard for those problem water applications. After completion of regeneration, the controller shall direct the filter into the service mode. This system shall produce a continuous supply of filtered water. Regeneration from this controller shall be initiated by pushbutton, time clock, flow meter or from a remote location and shall be capable of sequential regenerations.

Progressive Demand Parallel Option

A sophisticated programmable microprocessor shall be provided to operate single, twin, triple or quadruple systems. Multiple tank application, progressive demand and diagnostic capabilities shall be the premiere features. The progressive demand application shall allow one to four filters to be online in proportion to the service demand. One filter shall always be in service, and the other units automatically come online as the flow increases. As the flow rate decreases, filters shall be removed from service based on the pre-programmed GPM settings. One stager for each vessel shall be equipped to provide operating pressure (pneumatic), and for control of automatic valves installed on each vessel. The stager shall be mounted in a NEMA 4x fiberglass enclosure. Solenoid pilot valves shall be mounted in the enclosure panel and used to regulate the service outlet valves on the parallel/demand control systems. This system shall provide uninterrupted flow of filtered water 24/7 during variable and peak flows of the facility. (One auxiliary output shall be provided to start a chemical feeder, pump or motor application)

Allan Bradley PLC Controller Option

The control system shall utilize an industrial programmable Allan Bradley logic controller (PLC) to automatically cycle the control valves through the regeneration program. The programmable controller and operator interface shall cycle electric solenoid valves, which shall control the opening and closing of the control valves either hydraulically or using compressed air.  Allan Bradley control packages shall be equipped with a 6” HMI “EZ” color touch screen that provides extremely user friendly programming. The PLC solenoid operated system shall include features: hold, advance, resume, terminate or close of all valves function, for fast, easy field service. The main screen shall be designed to display a variety of parameters that include batch, totalization, and current flow rates, on line tank status, regeneration cycle time remaining. A pre-rinse cycle shall be programmed in to ensure the highest water quality prior to service. The AB 10/100 IP Ethernet Network Connection port shall be provided for building management capabilities. The operator interface shall be password protected, and provided with a battery backup. Regeneration from this controller shall be initiated by pushbutton, time clock, flow meter or from a differential pressure signal. Custom programming and alternate communication protocols shall be available from the manufacturer. Air actuated solenoids shall require customer compressed air that is clean and dry with a minimum 80 PSIG and a volume of 1-2SCFM. 

Differential Pressure (DP) Systems

DP systems shall be available from the manufacturer and be designed for initiating regeneration when a 10-15 adjustable pressure differential is detected. This system shall have two pressure connections, one on the inlet pipe and one connected on the outlet pipe. When operator selected or a 10- 15 lb. differential in operating pressure occurs, the indicating pressure switch sends a signal to the controller for immediate, delayed or seqential regeneration to clean the media bed.


Water meters shall be provided to initiate regeneration based on water use to increase salt efficiency and prevent hard water bypass during periods of high water use.  2” Electronic meter housings shall be constructed with 30% glass filled Noryl using a polypropylene turbine impeller. The accuracy shall be + or - 3% of reading using a Hall Effect switch. A pressure drop of 1.5 psi @30GPM and maximum water temperature shall be less than 100F.

Flow sensors 2-1/2” and above shall be highly repeatable and have open collector signal with a wide dynamic flow range of 0.1 to 6m/s. Electrical requirements shall consist of: Supply voltage 5 to 24 VDC, supply current <1.5 mA @ 3.3 to 6 VDC / < 20mA @ 6 to 24VDC. Output collector, sinking 10 mA max.   


The following options are available to meet specific application requirements:

Skid Mounted, Pre-piped and Pre-wired Option

The softener mineral tanks shall be skid mounted on a 4" or 6" channel iron skid. The skid shall be cross-braced with 4" or 6" channel or angle iron with legs for an elevated skid. All steel surfaces shall be coated to the match exterior of softener tanks.  All interconnecting piping shall be the same material as the valve nest manifold piping, and shall be assembled to the fullest extent possible. The inlet and outlet isolation valve connections, brine and drain headers shall terminate inside the skid internal area. All piping shall be suitably supported and anchored to the skid. All electrical wiring shall be complete between the units, and the hydraulic or pneumatic tubing shall be installed as part of the skid package. The entire skid mounted system shall be leak and electrically tested as a unit by the manufacturers designing engineer before shipment.

ASME Code Vessels Option

ASME Code Section VIII stamped and certified construction. Working pressure vessel ratings of 125psi, 150psi or higher shall be available on either non-code or ASME code constructed vessels.  

Special Linings and Coatings Option

Custom interior linings shall be offered to handle operation conditions for high temperature applications and acid feed water conditions. Polyurethane finish coatings shall be available for outdoor installations applications.

Internal Distribution Option

Stainless steel, type 304 or 316, constructed distribution assemblies shall be available for increased internal distribution life and protection against hot water back up from heating systems that can cause loss of resin media due to distribution failure. The distributors shall be designed using non-clogging logarithmically spaced collector orifices welded at every intersection of vertical rod and surface wire with stainless steel wrapped screen.

Piping and Valve Assembly Options

Thermoplastic or bronze diaphragm valves shall be available for added corrosion resistance. Piping material and configurations such as PVC, copper, stainless steel shall be available by manufacturer.

Separate Source Backwash

Manufacturer shall provide optional hardware and programming for separate source backwash water than the service water.

Sanitization of Hot Water or Steam Carbon Filters

Manufacturer shall provide optional hardware and automatic programming that allows hot water or steam to sanitize and reduce bacteria counts in vessel.

Sub-Surface Wash and Air Sour Systems

Manufacturer shall provide optional hardware and automatic programming that allows injected air to   help scrub and scour foul-ants from media.


Three (3) complete sets of installation, operation and maintenance manuals shall be provided.


Attrition loss of mineral is guaranteed not to exceed 3% per year for a period of three (3) years. All mechanical and electrical equipment is guaranteed for eighteen (18) months from date of shipment or one (1) year from date of service against any defects in workmanship or material. Any part proving defective shall be replaced or repaired within this period at manufacturer’s option.

The manufacturer guarantees that under actual operating conditions the mineral shall not be washed out of the system during the service run or backwashing period; and that the turbidity and color of the effluent by reason of passing through the softener system, shall not be greater than the incoming water; and that the underdrain system, gravel and minerals shall not become fouled, either with turbidity or by dirt, rust or scale from the softening system while operating as noted in manufacturer’s instructions.


Pressure Range – 30 psi to 100 psi maximum
Temperature – 35 to 120 degrees F.
Electrical – Standard rating is 110 volt 60 hertz, 1 phase with    NEMA 4X enclosures
Drain piping limits: Max. 10ft vertical and discharged to an atmospheric floor drain sized to handle the backwash rate of the system. (Max. proven length is 25ft.)

**Specifications Subject to Change without notice.






Address: 7869 N. 73rd St. Milwaukee, WI 53223, Phone: 414.365.0787 Fax: 414.365.0248 Email: info@lakesidewater.com 

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