INVITATION TO BID WATER TREATMENT PLANT REVERSE OSMOSIS ...

INVITATION TO BID

WATER TREATMENT PLANT REVERSE OSMOSIS MEMBRANE REPLACEMENT

Bid No. 20033

November 2018

INVITATION TO BID of 22 Water Treatment Plant Reverse Osmosis Membrane Replacement Bid No. 20033

TABLE OF CONTENTS

Instructions To Bidders……………………………………………………………………………………………………………………………3

Scope Of Work…………………………………………………………………………………………………………………………………………4

Conditions……………………………………………………………………………………………………………………………………………….4

Bonds………………………………………………………………………………………………………………………………………………………5

Insurance…………………………………………………………………………………………………………………………………………………5

Hold Harmless…………………………………………………………………………………………………………………………………………6

Technical Specifications…………………………………………………………………………………………………………………………..6

Submittals……………………………………………………………………………………………………………………………………………….7

Bid Form………………………………………………………………………………………………………………………………………………….8

Bid Bond………………………………………………………………………………………………………………………………………………..10

Business Relationship Affidavit………………………………………………………………………………………………………………11

Non-Collusion Affidavit………………………………………………………………………………………………………………………….12

Agreement……………………………………………………………………………………………………………………………………………13

Performance Bond…………………………………………………………………………………………………………………………………16

Statutory Bond……………………………………………………………………………………………………………………………………...18

Maintenance Bond………………………………………………………………………………………………………………………………..19

RO Membrane Skid Photograph…………………………………………………………………………………………………………….20

Isolation Valves Photograph………………………………………………………………………………………………………………….21

Permeate Line Orifice Plates Photograph………………………………………………………………………………………………22


INSTRUCTIONS TO BIDDERS

The City of Altus, Oklahoma, herein after called the “Owner,” is seeking bids for the replacement of the

reverse osmosis membranes and other related work at the municipal water treatment plant.

Sealed bids will be received until 3:00 PM, Wednesday, December 3, 2018, in the Altus City Clerk’s Office

on the 2nd Floor of City Municipal Complex at 509 South Main Street, Altus, Oklahoma, 73521-3135.

To request a full bid package, contact:

Cat Bentley, Stephen B. Cesar Finance Supervisor OR SBC Consulting Engineers 580-477-1950 580-512-1597 [email protected] [email protected] Technical questions regarding this solicitation must be submitted in writing by 5:00 PM on November

26, 2018 to the Consulting Engineer as follows:

Stephen B. Cesar SBC Consulting Engineers 580-512-1597 [email protected] Questions submitted after this deadline may not be answered. Written responses to questions will be

sent to all firms Potential Bidders List. Parties who have requested a bid package are placed on the list.

Other parties interested in the project, but not planning to bid, may be added to the list by sending a

written request to Stephen Cesar, SBC Consulting Engineers.

Bidders are encouraged to inspect the work prior to bidding. Potential bidders who wish to inspect the

site should contact Stephen Cesar to schedule the visit. The Municipal Water Treatment Plant is located

at 221 East Bradford Avenue, in Altus, Oklahoma.

Bidders are invited to be present at a public opening at the following time and date:

3:00 PM, Monday, December 3, 2018

Bids must be sealed and must include “Bid No. 20033” on the bottom left hand corner of the bid

envelope and mailed or delivered to the City of Altus at the above address. Bidders must include a

return address on the top left hand corner of the envelope.

Bids shall consist of returning the following completed forms, all of which are found in this solicitation

package:

Bid Form

Business Relationship Affidavit

Non-Collusion Affidavit

Bid Bond The Owner reserves the right to reject any or all bids and to study all bids for thirty (30) days prior to bid

award.

mailto:[email protected]


Bids received more than ninety six (96) hours before the time set for opening of bids, or any bid received

after the time set for the opening of bids, shall not be considered and shall be returned unopened.

The Owner does not discriminate on the basis of race, color, national origin, sex, religion, age or

handicap status, in employment decisions, the procurement of services, the selection of suppliers or

awarding of bids and/or contracts.

Awards shall be based on a determination of the lowest qualified bid. "Qualified" is a determination by

the Owner regarding the capability of the bidder to perform the work in good faith, with integrity and

reliability, as well as the materiality of the bidder’s errors, omissions, conditions or exceptions (if any).

The City Council/AMA will award the contract subject to staff review and approval of the membrane

being proposed for installation. The written Notice Of Award will be issued after staff has reviewed the

manufacturer’s membrane performance projections and approved the membrane being proposed for

installation. The successful bidder shall submit the manufacturer’s performance projections within ten

(10) calendar days after the City Council/AMA awards the contract.

SCOPE OF WORK

The Contractor shall provide labor, equipment, materials and incidentals needed to complete the work

specified in this solicitation for bids. The work includes the replacement of the membranes for three (3)

existing reverse osmosis units (skids) and other related work as specified.

The Contractor shall: (1) rebuild/replace all end cap gaskets, quad seals and miscellaneous hardware for

the three (3) RO skids with 288 membranes per skid; (2) perform any program editing of the PLC logic

and alarm set points required for the feed pumps to provide the proper feed flow to the RO units; and

(3) implement and employ existing third-stage booster pumps.

The Owner will provide suitable on-site containers for storage and transport and off-site disposal of the

existing membranes, the packaging for the new membranes, and the other trash generated by the

membrane replacement work.

The Contractor shall furnish and install software for normalized performance data analysis. The

software shall be designed to allow the operating staff to evaluate membrane performance using

normalized data to more effectively track the condition of the membranes.

The Contractor will provide: (1) all on-site labor required to breakdown the RO skids and to unload and

remove the existing RO membranes from the vessels; (2) all on-site labor needed to physically unpack,

stage and install all new membranes; (3) all scaffolding and scissor lift rental needed to perform the

work; (4) all shop supplies, end cap seals, gaskets and parts required to perform the work; (5) all needed

PLC editing (P&ID) blocks for feed pumps and needed edits for the proper operation of the RO units as

specified; (6) a loading schedule of membrane serial numbers to placement for each skid in XL

Spreadsheet format; and (7) all labor, per diems, mileage and shipping for hardware supplies required to

complete the work as specified.

CONDITIONS

1. Bidders are responsible for inspecting the site of the work and for being familiar with the site

conditions.


2. The work shall be scheduled and organized in a manner that will permit at least one, and

preferably two, RO skids to remain in service while the work is being performed.

3. The water treatment plant operating staff will work with the Contractor to help coordinate and

facilitate the work.

BONDS

The following bonds will be required for this project. Bid forms are included in this solicitation.

1. Bid Bond – a bond shall be submitted with each bid in an amount of 5% percent of the total bid

amount. Bids that are received without a bid bond will be rejected. An irrevocable letter of credit

or a certified check may be used in lieu of a Bid Bond.

The Owner reserves the right to retain all Bid Bonds until the successful bidder enters into a contract

or until thirty (30) calendar days after the bid opening, whichever is sooner. If any bidder refuses to

enter into a contract, the Owner may retain the Bid Bond as liquidated damages.

After the project has been awarded, the successful bidder will be asked to sign the Agreement and to

provide a Certificate of Insurance and the following bonds. Failure to submit these bonds may result in

the withdrawal of the award and forfeiture of the Bid Bond. The cost of all insurance and bonds shall be

included in the Bid Price.

2. Performance Bond – a bond to protect the Owner against failure to complete the project. This

bond shall be for the total bid amount and shall be in force until the project is accepted by the

Owner.

3. Statutory Bond – a bond to protect the Owner against the Contractor’s failure to pay suppliers,

vendors, or subcontractors. This bond shall be for the total amount of the project.

4. Maintenance Bond – a bond to protect the Owner from faulty work. This bond shall be for the

total bid price and shall be in force until 24 months after the date of acceptance.

INSURANCE

The Contractor shall purchase and maintain such insurance as will protect himself and the Owner from

claims which may arise out of or result from the Contractor’s execution of the work, whether such

execution be by himself or by any Subcontractor or by anyone directly or indirectly employed by any of

them.

The required insurance shall cover the following claims which may arise thru execution of the Contract:

1. Claims under Workman's Compensation, disability benefit and other similar employee benefit

acts;

2. Claims for damages because of bodily injury, occupational sickness or disease, or death of the

employees;

3. Claims for damages because of bodily injury, sickness or disease, or death of any person other

than the employees;

4. Claims for damages because of injury to or destruction of tangible property, including loss of use

resulting therefrom.


The Contractor shall purchase and maintain, during the contract time, General Public Liability and

Property Damage insurance including vehicle coverage. The insurance shall be in an amount of not less

than $200,000.00 for injuries, including accidental death, to any one person, and subject to the same

limit for each person in an amount of not less than $200,000.00 for injuries, including accidental death,

to any one person, and subject to the same limit for each person in an amount of not less than

$200,000.00 for injuries, including accidental death, to any one person, and subject to the same limit for

each person in an amount of not less than $1,000,000.00 on account of one accident and Property

Damage Insurance in an amount of not less than $200,000.00.

The Contractor shall furnish to the Owner Certificates of Insurance prior to execution of the Agreement.

These certificates shall contain a provision that coverage’s afforded under the policies will not be

cancelled unless at least fifteen (15) days prior written notice has been given to the Owner. Only

companies that have been approved by the Oklahoma Insurance Commission will be accepted.

HOLD HARMLESS

The Contractor shall save harmless the Owner from all suits, actions or claims brought on account of any

injuries or damages sustained by any person or property in consequence of any neglect or misconduct

by the Contractor including any and all employees, agents or subcontractors.

TECHNICAL SPECIFICATIONS

1. The replacement membranes shall be DOW Filmtec Fouling Resistant Low Energy BW30XFRLE-

400/34i or Toray Brackish Low Energy TMG20D-400 with 34 mil spacer. Performance

projections and operating parameters shall be based on a minimum permeate production rate

of 1,200 gpm per skid and a minimum recovery of 80% during the warmer months and 75%

during cooler months. Projections for membrane and anti-scalant performance shall be based

on current water analysis data. System run conditions may need to be adjusted if and when the

water quality changes. Design water quality data is available upon request. The successful

bidder shall submit the manufacturer’s membrane performance projections to the Owner within

ten (10) days after the City Council/AMA awards the contract.

2. Flange restrictor plates shall be stainless steel and designed to maintain the proper permeate

header backpressure to provide the permeate flux flow recommended by the membrane

manufacturer.

3. The manual lever-operated butterfly valves shall be Bray or approved equal and shall be same

the style as the existing RO skid butterfly valves. The valve pressure rating shall be suitable for

the intended application.

4. The third-stage booster pumps shall be implemented and employed to maintain a pressure on

the final stage to achieve the membrane manufacturer’s performance projection. For Toray, the

pressure is approximately 27 psi. The pressure on the final stage membranes will be set by

hand. There are no VFDs for the booster pumps or provisions for automatically adjusting the

pressure on the third-stage membranes. As part of the daily operating routine, the operating

staff will have to monitor and adjust the feed pressure by hand to maintain the final flux

balance.


SUBMITTALS

After the project has been awarded but prior to commencement of work, the Contractor shall submit

the following to the Consulting Engineer for review and approval.

Submittal information for the membranes and related hardware being proposed for installation.

Submittal information for the normalized data analysis software.

Submittal information for orifice plates, butterfly valves and other components.

Membrane manufacturer’s Membrane Performance Projections for the membranes being

proposed for installation.


BID FORM

TO: City of Altus DATE: December 3, 2018

509 South Main Street Altus, OK 73521-3135

In compliance with your Invitation To Bid, we, the undersigned hereby propose to furnish all labor,

materials, equipment and incidentals necessary to perform and complete all work for:

Bid No. 20033—Water Treatment Plant Reverse Osmosis Membrane Replacement

The Bidder hereby agrees that if a contract is awarded, he will enter into an Agreement with the City of

Altus and will commence work on the date specified in the Notice To Proceed and fully complete the

work within forty-five (45) consecutive calendar days thereafter.

Bidder acknowledges receipt of the following Addenda (if any):

Addendum No. Date Issued:



Bidder hereby proposes to furnish all labor, equipment and materials and to perform all work required

to complete WATER TREATMENT PLANT REVERSE OSMOSIS MEMBRANE REPLACEMENT , Altus Bid No.

20033, in accordance with the provisions of the Contract Documents, for the following TOTAL LUMP

SUM PRICE:

$

Words Figures

By submitting this Bid, the Bidder acknowledges that he has had sufficient opportunity to review the

Contract Documents and is familiar with all requirements, limitations and site conditions.

The Bidder agrees that this Bid shall be good and may not be withdrawn for a period of 60 (sixty)

calendar days after the date of the bid opening.

Upon written receipt of the Notice Of Award, the Bidder agrees that within 5 (five) days he will furnish

to the Owner a Certificate Of Insurance and a W-9 Form as required by Contract Documents.

The Bidder understands that the Ower reserves the right to reject any or all bids, to waive any

informalities in the bidding, and to accept what is determined to be the lowest qualified Bid.


Bid Form (Page 2 of 2)

Bidders must submit the following documents and information with the Bid. Failure to include any of

the documents and information listed below may result in the Bid being rejected as incomplete.

Bid Bond

Non-Collusion Affidavit

Business Relationships Affidavit

Membrane Manufacturer’s Membrane Performance Projections

Submitted By:

Seal (If Bid by Corporation) Name of Bidder:

Authorized Signature:

Title:

Address:

Address:

Telephone Number:

Email Address:


BID BOND

Know all men by these presents, that ________________________________________as principal,

hereinafter called “the Principal”, and ____________________corporation duly organized under the

laws of the State of Oklahoma as surety, hereinafter called “the Surety”, are held and firmly bound unto

the City of Altus, Oklahoma, as obligee, hereinafter called “the Obligee”, in the sum of

$________________________ dollars ($________________), for payment of which sum well and truly

to be made, the said Principal and the said Surety, bind ourselves, our heirs, executors, administrators,

successors and assigns, jointly and severally, firmly by these presents.

Whereas, the Principal has submitted a bid for Water Treatment Plant Reverse Osmosis Membrane

Replacement (Bid No.20033) in the amount of _____________________________________ dollars.

Now, therefore, if the Obligee shall accept the bid of the Principal and the Principal shall enter into a

contract with the Obligee in accordance with the terms of such bid, and give such bonds as may be

specified in the bid solicitation with good and sufficient surety for the faithful performance of such

contract and the prompt payment of labor and material furnished in the prosecution thereof, or in the

event of the failure of the Principal to enter such contract and give such bonds, if the Principal shall pay

the Obligee the difference not exceed the penalty thereof between the amount specified in said bid and

such larger amount for which the Obligee may be in a good faith contract with another party to perform

the work covered by said bid, then this obligation shall be null and void, otherwise to remain in full force

and effect.

SIGNED AND SEALED THIS ________ day of ____________________, 2018.

Principal

(Seal) Title

___________________________________ Witness


BUSINESS RELATIONSHIP AFFIDAVIT

STATE OF OKALHOMA ) ) SS COUNTY OF JACKSON ) ___________________________________________, of lawful age, being first duly sworn, on oath says

that he/she is the agent authorized by the bidder to submit the attached bid. Affiant further states that

the nature of any partnership, joint venture or other business relationship presently in effect or existed

within 1 (one) year prior to the date of this statement with the architect, engineer, or other party to the

project is as follows:

Affiant further states that any such business relationship presently in effect or which existed within 1

(one) year prior to the date of this statement between any officer or director of the bidding company

and any officer or director of the architectural or engineering firm or other party to the project is as

follows:

Affiant further states that the names of all persons having any such business relationships and the

positions they hold with their respective companies or firms are as follows:

(If none of the business relationships hereinabove mentioned exist, affiant should so state.)

Affiant’s Name & Signature

Subscribed and sworn to before me this ______ day of__________________, 2018.

Notary Public

My Commission Expires:

Seal


NON-COLLUSION AFFIDAVIT

STATE OF OKALHOMA ) ) SS COUNTY OF JACKSON )

___________________________________________, of lawful age, being first duly sworn, on oath says

that he/she is the agent authorized by the bidder to submit the attached bid. Affiant further states that

the bidder has not been a party to any collusion among bidders in restraint of freedom of competition

by agreement to bid at a fixed price or to refrain from bidding; or with any state or city official or

employee as to quantity, quality, or price in the prospective contract; or in any discussions between

bidders and any state or city official concerning exchange of money or any other thing of value for

special consideration in the letting of a contract.

Affiant’s Name & Signature

Subscribed and sworn to before me this ______ day of__________________, 2018.

Notary Public

My Commission Expires:

Seal


AGREEMENT This Agreement, made this ____ day of ____________, 2018, by and between the City

of Altus, a municipal corporation, hereinafter called “The City” with a mailing address of

509 South Main Street, Altus, OK 73521; and _________________, hereinafter called

"The Contractor" with a mailing address of ___________________________________.

WITNESSETH:

That for and in consideration of the payments and agreements hereinafter mentioned:

01. The Contractor will commence and complete the work for Water Treatment Plant

Reverse Osmosis Membrane Replacement – Bid No. 20033.

02. The Contractor will furnish all of the material, supplies, tools, equipment, labor

and other services necessary for the construction and completion of the project described herein.

03. The Contractor will commence the work required by the Contract Documents

within ten (10) calendar days after the date of the Notice To Proceed and will

complete the same within forty-five (45) calendar days unless the period for

completion is extended otherwise by the Contract Documents.

04. The Contractor agrees to perform all of the work described in the Contract

Documents and comply with the terms therein for the sum of _____________, as

shown on the Bid Form.

05. The term "Contract Documents" means Bid Solicitation No. 20033 which includes

the following: A. Instructions To Bidders B. Scope Of Work C. Conditions D. Insurance E. Hold Harmless F. Technical Specifications F. Bid Form G. Bid Bond H. Non-Collusion Affidavit I. Business Relationships Affidavit J. Performance Bond K. Statutory Bond L. Maintenance Bond M. Addenda (if any)


N. RO Equipment Photographs

Also included in the contract documents are this Agreement, the Notice Of Award, the Notice To Proceed, and Change Orders (if any).

06. The City of Altus will pay monthly progress payments to the Contractor as set

forth in the Contract Documents.

07. This Agreement shall be binding upon all parties hereto and their respective

heirs, executors, administrators, successors, and assigns. IN WITNESS WHEREOF, the parties hereto have executed, or caused to be executed by their duly authorized officials, this Agreement in three (3) copies each of which shall be deemed an original on the date first above written. City of Altus, Oklahoma

By:

Name: Jack O. Smiley

(Seal) Title: Mayor Attest:

Name: Debbie Davis

Title: City Clerk (Contractor)

By:

Name:

Title:

Address:

(Seal) Address: Attest:

Name:

Title:


ACKNOWLEDGMENT

STATE OF )

) ss

COUNTY OF )

Before me, the undersigned, a Notary Public in and for said County and State, on this _____ day of

__________________, 2018 personally appeared ________to me known to be the identical person(s)

who executed the within and foregoing instrument and acknowledged to me that _______executed the

same as free and voluntary act and deed for the uses and purposes therein set forth.

Given under my hand and seal the day and year last above written.

MY COMMISSION EXPIRES: NOTARY PUBLIC:


PERFORMANCE BOND

That _____________________ as Principal, and ___________________corporation organized under the

laws of the State of _______________________________ and authorized to transact business in the

State of Oklahoma, as surety, are held and firmly bound unto the City of Altus in the sum of

___________________________ Dollars ($ __________________) in lawful money of the United States

of America, for the payment of which, well and truly to be made, we bind ourselves and each of us, our

heirs, executors, administrators, trustees, successors, and assigns, jointly and severally, firmly by these

presents.

Dated this __________ day of ___________________, 20________.

The conditions of this obligation is such that:

Whereas, said principal entered into a written contract with the City of Altus, dated ___________,

20_____, for Water Treatment Plant Reverse Osmosis Membrane Replacement (Bid No. 20033).

All in compliance with the plans and specifications therefore, made a part of said contract and on file in

the office of the City of Altus, 509 S. Main Street, Altus, OK 73521-3135.

Now, Therefore, if said principal shall, in all particulars, well, truly, and faithfully perform and abide by

said contract and each and every covenant, condition, and part thereof and shall fulfill all obligations

resting upon said principal by the terms of said contract and said specifications; and said principal shall

promptly pay, or cause to be paid, all labor, materials and/or repairs and all bills for labor performed on

said work, whether by subcontractor or otherwise; and if said principal shall protect and save harmless

said City of Altus from all loss, damage, and expense to life or property suffered or sustained by any

person, firm or corporation caused by said principal or his/her agents, servants, or employees in the

construction of said work, or by or in consequence of any negligence, carelessness or misconduct in

guarding and protecting the same, or from any act or omission of said principal or his / her or its agents,

servants, or employees, and if said principal shall protect and save City of Altus harmless from all suits

and claims of infringement or patent rights or processes, then this obligation shall be null and void,

otherwise to be and remain in full force and effect.

It is further expressly agreed and understood by the parties hereto that no changes or alterations in said

contract and no deviations from the plan or mode of procedure herein fixed shall have the effect of

releasing the sureties, or any of them, from the obligations of this bond.


In witness whereof, the said principal has caused these presents to be executed in its name and its

corporate seal to be hereunto affixed by its duly authorized officers, and the said surety has caused

these presents to be executed in its name and its corporate seal to be hereunto affixed by its

attorney-in-fact, duly authorized so to do, the day and year first above written.

Principal:

____________________________________

By:

____________________________________

Title

Attest:

_____________________________________

Surety:

____________________________________

By:

____________________________________

Attorney-in-Fact


STATUTORY BOND

Project No.______________________

KNOW ALL MEN THESE PRESENTS:

That we, __________________________ as Principal, and ______________________ a Corporation

organize under laws of ________________, as Surety, are held and firmly bound unto the City of Altus in

the amount of __________________ Dollars ($_________________) for the payment of which we

hereby bind ourselves, our heirs, executors, administrators, successors, and assigns, jointly and

severally, firmly by these presents.

Dated this _______.day of _________________, 20_______.

Whereas, the said ________________________did on _____________________ enter into a certain

contract with the City of Altus for construction of:

Water Treatment Plant Reverse Osmosis Membrane Replacement (Bid No. 20033)

Whereas, this bond is given in compliance with Oklahoma Statutes Annotated, 1941, Title 61, Sections 1

and 2, as amended.

NOW THEREFORE, the condition of the above obligation is such, that if the Principal shall pay all

indebtedness incurred for labor or material or rental of machinery or equipment furnished in the

construction of said public construction project and while making said public improvements, then this

obligation shall be void, otherwise to remain in full force and effect.

IN WITNESS WHEREOF, we have hereunto set our hands and seals the day first above written.

Principal:

____________________________________

By:

____________________________________

Title

Attest:

_____________________________________

Surety:

____________________________________

By:

____________________________________

Attorney-in-Fact


MAINTENANCE BOND

Project No. _________

KNOW ALL MEN BY THESE PRESENTS:

That we, ______________________________________________, as Principal, and

________________________________________, as Surety, are held and firmly bound unto the City of

Altus, a Municipal Corporation, as Owner in full and just sum of ____________________ Dollars

($_______________) for the payment of which well and truly to be made, we, and each of us, bind

ourselves, our heirs, executors, administrators, devisees, trustees, successors or assigns, jointly and

severally, firmly by these presents.

The conditions of this obligation are such, that whereas, said Principal has by a certain contract,

between himself and the Owner dated the _________ day of _________________________, 20____,

agreed to construct the improvements described in said contract and to maintain the said

improvements in good condition for a period of one (1) year from the date of final acceptance of the job

by the Owner. Principal and Surety further guarantee the repair of any and all damage and or loss

resulting from faulty materials or workmanship provided or done by said Principal.

NOW, THEREFORE, if said Principal for the period of one (1) year from and after the completion and

acceptance of said improvements, shall maintain in good condition the said improvements, then this

obligation shall be void, otherwise to remain in full force and effect. It is further agreed that if the said

Principal and Surety, herein shall fail to maintain said improvements in good condition for the said

period of one (1) year, and at any time repairs shall be necessary the Owner will make the necessary

repairs and the cost of making said repairs shall be determined by the Owner or someone or persons

designated by them to ascertain the same, and, upon fifteen (15) days notice, the said amount

ascertained shall become due and payable to the Owner by the Principal or the Surety.

IN WITNESS WHEREOF, instrument is executed in _________counterparts, each one shall be deemed

original, this _______ day of _______________ 20_____.

Attest:

Principal

By:

Secretary

Attest:

Surety

By:

RO MEMBRANE SKIDS

INVITATION TO BIDWater Treatment Plant Reverse Osmosis Membrane ReplacementBid No. 20033

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ISOLATION VALVES

INSERT NEW BFV,TYP THREE SKIDS


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PERMEATE LINE ORIFICE PLATES

INSERT NEW ORIFICEPLATES, TYP THREE SKIDS


of 22)

INVITATION TO BID WATER TREATMENT PLANT REVERSE OSMOSIS ...

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