Sewer Use Regulations (Resolution No. 51-1971)

A"l"F.!L 19, 1971 ."1"' UFF1CL\L G.·\ZETTE Pambansang Pangasiwaan ng Tubig at Alkantarilya (NATIONAL WATERWORKS AND SEWERAGE AUTHORITYI REPUBUC OF THE: PHILIPPI:-iES :'ATW:>At. -WATERWORKS .\~DSE\\'"ERM:F. -\{'TIlOIUTY ARROCEROS STREET, )1,-\:'\11..\ R£,;vLH:n. That Resolution No. 51-71 be and is hereby confumed as cor-rected, to read as fol lows: " Resolution No. 51-il SE\YER USE REGULATIONS WUEREAS, Manila Met ropolitan Area has grown clY.\"iderahly since the end of' World War II. ;)o:h "in population, housing, and industrialization, wit!, "-the result .that the present sewerage system ~Ilrving . the area" is now grossly inadequate and ~~s only: about twelve percent of the popu lation; WIIEREAS, a Project Master Plan for a Sewer age System' for Manila Metropolitan Area has be<mprepared and its implementation has for its Plll'POse the prevention of pollution and unhealth ~~, and unsanitary conditions resulting from im proved waste water disposal and the construction of individual waste water disposal far-ifities : \VllF:REAS, for the efficient and successful opera tinn not only' of the presently existing" sewerage system but also of the completed works after its expansion in accordance with the Mastel' Plan, it is desirable that regulations be established to ccntrol its use and to generate funds for its operation, malntenunee, and improvement ; Now, THEREI"ORE, pursuant to' the authority granted under Section 2 (k ) of R.A. No. 1:183 creating the- N\VSA, to wit: 2(k) To issue such regulations as may be necessary for the sanitary protection of water sheds, reservoirs, water, mains, springs, and other water sources fer the propel' operation of sanitary sewers, and for the protection of the water and sewer service, as soon as es tablished, any violation of which shall be punished by a fine of "hot more than five hundred pesos or by imprisonment for not more than six months, 01' both such fine and im prisonment in the discretion of the court; OFFICIAl. (:..-\.ZETTi': be it resolved that the following' Sewer C~" f{f,g' ulutions he, and are hereby, adopted for the con nection to, and the ,,~p of. sanitary sewurs unde r the control and administration of ';";WSA: Sr:CTIO:-: 1.01. De tinitill II ,q : Lnless the context H~,hcaily indicates otherwis,', the meaning' of te-rms used in these rf'>ru]at:nl1s shall hf' as follows: 1. 'Metropolitan Area.' shall menn the Manila and Suburbs Ar-:u which i ncl urles till' cit ies of Manila, Pasay, quezon and Caloocan: the munic ipalities of Cainta, Las Pi nas, Makati, Malahou, Mandaluyorur, Ma rikinu. Montalban, Navotus, Parafiaquo, Pasig, Pateros, San Juan, San Mateo, Taguig and Taytay in the province of Rizal; and the Municipality of Vnlenzuela in the province of Bulacun : 2. "Generul Manager' shall mean the (;"n",'al MalHIKeI' of NWSA, 01' his authorized deputy, agent or representutive. 3, 'Sewerage System' shall mean -all facilities for collecting, transporting, pumping, treating and disposing' of waste-water. •1, 'Sewage' shall mean the foul matter carried ott' by a sewer. 5. 'Wastewater' shall mean a comhination of the water-carried wastes from residences, business buildings, institutions and commercial and industrial establishments, together with such ground, surface and storm waters which may have entered the sewerage system. 6. 'Domestic Wastewater' shall mean those wastes which are similar or comparable to wastes which originate from dwellings and contain only human excrement and wastes from kitchen, laundry, hu thing and other household facilities. 7. 'Sewer' shall' mean a pi'p~ 01' conduit for carrying wastewater. 8. 'Public Sewer' shall mean sewer which is controlled by NWSA. 9. 'Sanitary Sewer' shall mean sewer which carries wastewater and to which storm, surface and ground waters are not intentionally admitted. 10. 'Storm Sewer' or 'Storm Drain' shall mean sewer which carries storm and surface waters and drainage, but excludes wastewater and pol luted industrial wastes. 11. 'Wastewater Treatment Plant' shall mean any arrangement of services anr! structures used for treatment wastewater. 12. 'Commercial and Industrial Waste' shall mean the water carried wastes from commercial and industrial establishment as distinct from domestic wastewater. 13. 'Garbage' shall mean solid food wastes re sulting from preparing, cooking and disposing of food and from the handling, storing and selling of produce. 14. 'Properly Shredded Garbage' shall mean garb age that has been shredded to such degree that all particle!': will be carried freely under the flow cOIIlJitiull.:- n~rlnalJy pt"p\':,ili!lg' III lilt· ,..a:.\\'eri-;, \\-It:: no pal't:c!;;' /.:TC:.ltt~l' than "II(' ""ntil1lelel' in :1:':,' dimension, i,I, 'Buildin,1!: :)0\\'1'1" "hall mean th« exlt~n.,i"" from the Illlil'\ing' drain to t.hr- l'\Ihli,' ""\\'1'1' or ot her pia"" of disposa l. 11i. 'St.anda ,'d Luborutnrv .\1 <'t hod:-<' "II;, i I nlPan Illpth(Hl:: (If uuul yses and l'(::-'till~ a:' ou tl iru-I in t h-: lu u-st l.'ditiurl uf 'Standard :\It,tlll.,d 1'111' i,!l1' i':Xtliii i nut ion of Wn te r and S,,\\'t'!'a,C:"" p ul.l ishcd jniutl:: hy the Amcticun Puhli« H eu lt h --'''''''ciatioll, t h» American Water Works Associutiou :.tud the Wu tc r Pollution Con t rol Federation, 17, 'RO D,:' (df'noting' hiochcmicu l OX~'>r"1l demand) sha ll mean the quunti ty (If ox yjren utilized per unit volume "r Hampk- i:l the hior-hemicn l oxida tion of orgu nic ruat te r u udr-r "tandard lubo ru t.u-v conditions in five days at :!1I 'C, 18, "p H.' shall mean the logarithm to the baSI' 10 of the reciprocal of the number of g'l'l'OI ionic hydrogen equivalents pel' liter of solution. U). 'Suspended Solids' shall mean the non-filtrable residue (:-.rFR) , or solids that either float on ~he surface of, or are suspended in water, waste wuter, 01' other luquids, anrl which are removable hy standard laboratory methods, 20. 'Natural Outlet' shall mean any outlet into a watercourse, pond, ditch, lake Ill' any other body of surface or ground water. 21. 'Watercourse' shall mean a channel or loca tion in which a now of water occurs, either con tinuously 01' i ntcrmittently. 22. 'Receiving Water' 01' 'Water Body' shall mean any natural watercourse or body of water into which waste water is discharged, 2~, 'P"":';OIl' shall mean any natural or juridical person, which includes any individual, municipality, city or other political subdivision, corporation in stitution, firm, company, pu rtnershlp, association, entity, society, or group thereof. 24. 'Shall' is mandatory; 'May' is permissive, subject to approval by the General Manager. . 25. 'Normal Waste Water' shall mean waste water which contains not over 500 mg./1 of sus pended solids and not over 500 mg./1 BOD., and which does not contain any of the materials or substance listed in Section LOB of this Regulation in excess of allowable amounts specified in ...aid section. SEC. 1.02. Iydust'I'u.l Sewex: The owner of any commercial 01' industrTal establishment situated within the Manila Metropolitan Area and where a sanitary sewer is available shall install at his own expense suitable facilities for the conveying of all domestic waste water ,1I1d industrial wastes from said establishment into the sewer in accord ance with the rules and regulations set forth by NWSA, unless authorized to discharge directly into a storm drain, natural watercourse, or water body, under a valid permit from the National OFFICL-\L GAZETTE ..:------' Water :and Air Pollution Control Commission ,(NWAPCC) specifically nuthoriaimr such discharuo, ::.,SEC. 1.03. 4;rmit R"qllired. NI) person shall di'scharge wastes, except normal waste water as defined in Section 1.01, Item 2;;, from any com mercial or industrial estahlishment into the suni bii;y sewer without a permit from the Generul 'Manager, Any person wishing" to discharge wastes into sanitary sewers shall file an application for i{, connection permit with the Gellcml Manag-el', 'The application shall contain the following' informa tion: the name, address and telephone number :i>f applicant and' name of the officer of the com :'pany making the application; the type of pro ~ducts handled or manufactured; the quantity of 'wastes including seasonal, weekly. daily or hourly variations; anrl the chemical, physical and Otlll'" characteristic of the wastes and any other per :tinent and necessary information-all as required .on .forms provided b:: the General Manager for tbis . purpose. On the Ibasis of the application and provided that the characteristics of the proposed discharge are such that they are allowable under the pro visions of these Regulations, the General Manager shall issue a permit allowing the discharg-e of such ~v~stes into sanitary sewers. If the characteristics of the wastes are such that they are not allowable under these Regulations. the application shall be denied by the General Manager and the applicant shall be advised by the General MUllag-el' of step" to be taken before said permit can be granted. Such permit may be revoked' for cause at any tilneupon giving Jhe holder thirty (30) days written notice stating therein 'the -rea;;ons 1'01' re vocation, including non-payment of charges and surcharges for public sewer use. SEC. 1.04. Disposal oj Uncontaminated II, .es, Storm waters, sur ace water, ground waters, roof runoff, subsurface drainage, cooling- waters or other uncontaminated waters shall not be ad mitted into any sanitary sewer but shall be dis charged into such sewers as are specifically de signated as storm sewers, or to a natural outlet, SEC. 1.05. (JhU1'[jdS. Any person using sani tary sewers srrail pttY a normal sewer service charge based on the total volume or wastewater discharge to said sewers. This charge per cubic meter shall be based on the appropriate sewer service charge of NWSA. When the suspended solids '{NFR) content or the BOD, of waste ex ceeds the maximum concentration of these compo nents in normal wastewater, a surcharge in ad ditionto the normal sewer service charge, shall be levied as established by each of the formulae hereinafter set forth. The surcharges on BOD. and suspended solids herein provided for shall be collected only when wastewater treatment shall have been provided. The daily <urch'arge per excess metric ton of Susj'l'lldet! ;;olids shall IJe P En for wastes discharge to sewers t.rihuta I'y tu a wastewater treatment plant. The formulae for calculating' the rate 01' tht~ daily surcharue for execessive pollution a re : E.,=WX (B-A..> XP.. E..=\VX(N-Au ) XPu ' Wh'>n': E,.=, daily ehal';.\'(, to industry in ~"'Sl)S 1'01' excess BOD, E,.=claily charge to industr-y in Pesos for excess NFR 'V=avel'age wastewater Row in llI"lday B=,(laily weig-hted average BOD, concentration in llIg/1 of wastewater N=daily weighted average NFR coneentratlon in mg,/l of wastewater A..=allowable maximum BOD, cunceut ration in mg/1 (500 mgjl) An==callowable maximum N FH cOllcelltllation in mg/l (iiOO mg/1) P,.==average dailv cost to r(;1lI0Vt~ a metric ton of ROD" P u=average daily cost to remove a metric ton of NFR The owner of any commercial 01' industrial es tablishment may. if so desi red, treat the "taste from such establishment so as to reduce either the excess suspended solids 01' ROD" or both, to normal wastewater levels before discharging such 'wastes into the sanitary sewers, In cases where it is believed such wastes may be poisonous . to any part of the sewerage system or have an, adverse effect upon the wastewater t rea trnent pro cess or the receiving water, the General Manager may require treatment to reduce either the sus pended solids or BOD" or both to levels more closely approaching those of normal wastewater before discharging said waste into the sanitary sewers. Other prohibited substances may also be discharged into the sanitary sewer at the dis cretion of the General Manager, provided they can be treated or diluted to values below the maximum stipulated in Section 1.08 of this Regu lation. SEC. 1.06. Pnyment of Surchorae, Any sur charge resulting from the preceding section shall he placed on the water bill as separate item with the amount of such surcharge properly indicated; it , shall be payable to NWSA at the same time that the water bill and the normal sewer service charge are paid. The surcharge provided for by these Regulations shall assume effective on a date to be announced thereafter. All surcharge revenues collected in accordance with the provisions of this section and all revenue collected for the normal sewer service charge shall 2840 OFFICIAL GAZSTTE: VOL. til, ~o, IG constitute a separate fund which shall he used solely to pay the cost of constructing, operating', maintaining, and enlarging the existing or future sewerage works, and to pay the principal and interests on sewer loans contracted in connection therewith, Where, in the judgment of the General "vIan:q,;"el' , special conditions affecting a commercia! or industrial establishment exist to the extent that the surcharge levied will result in inequitable or unfair charges for either NWSA or the establish ment concerned, all pertinent facts and circum stances therefor shall be referred to the Board of Directors of NWSA with appropriate recommen dations for an equitable change. SEC. 1.07. Grease, Oil and Grit T,.ap~. Suitable traps shall be instaited wheN, 1h the opin ion of the General Manager, they are necessary for the removal of execessive amounts of grease, oil and grit from waste before the same is dis charged into the sanitary sewer. The type, capa city and construction of all traps shall he ap proved by the General Manager and their location shall be such as to be readily and easily accessible for cleaning and inspection. Such traps shall be installed and efficiently operated by the owner at his own expense. Trapped material shall be returned to the in dustrial process, be discharged to a public refuse dump, or disposed of in another suitable manner not inimical to public health. SEC. 1.08. Waste Prohibited. The follow ing materials, substance.o;'and wastes, unless other wise authorized ,by the General Manager shall not be discharged into the sewers; 1. Any liquid or vapor having a temperature higher than 65 deg. C except that where the volume of discharge represents' a significant portion of the flow through a particular sewer, a lower limit may be prescribed to prevent odor nuisance; 2. Wastes having a pH less than 6,0 or greater than 10.0 cr otherwise having chemical properties which are hazardous or are cap able of causing damage to the sewerage works or injury to personnel; 3. Garbage that hasnot been properly shredded; 4. Insoluble oils, fats, and greases. So-called soluble oils may be admitted to the extent of 100 mg/i, provided subsequent dilution in the sewers or treatment plant does not result in separation; 5. 'Any solid,. liquid, or gas which by reason of its nature and/or quantity can cause fire or explosion ; 6. Any solid or viscous material which can cause an obstruction-to the flow in sewers or in any way interfere with the treatment process: These materials included but are not li~ited to ashes, wax, paraffin, cinders, sand, mud, straw, shavings, metals, glass, rags, lint, feathers, tan', plastics, WO"I[ and saw dust, paunch manure, hail' and fleshing'S, entrails, lime slurrvs. heel' and distillery slops, g rui n p rocessi tur wusres. grinding- com poun: Is, 0,ectylpn('l:,'PIlPl',ltinll sl Ud.!.!,'l', chemical residues, :,cill residues, and food pt'('cessing' bulk solids; 7, Wastes containing phenolic compounds over 10 mg/l expressed as phenol; 8. Wastes containing cyanides or compounds ca pable of liberating hyd rocva n ic acid gas over 2 mg/1 expressed as hydrnzeu cyanide; 9, Wastes containing sulfides, ove l' 11) mg/l exp resserl as hydrogen sulfide; to. Wastes containing solutions of metals of such a concentration as to have an adverse effect upon the sewerage WOrks, treatment process, 01' receiving' water : 11. Chlorinated solvents ; 12. Septic tank sludjre, except that such .sludge may be discharged into selected treatment plants at locations designated for this pur pose by the General Manager: 13, Any corrosive, noxious lit' modorous material 01' substance which, either singly Ol' by reaction with other wasres. is capanlc of causing damage to the ;;e',\','l'ag-e works, or creating a public nuisance or hazard, or preventing entry into the sewers for main tenance and repair ; 1-1. Concentrated dye wastes 01' other wastes which are either highly colored 01' can become highly colored by creating with other wastes; and 15. Any material or substance not specifically mentioned in this section which is in itself corrosive, irritating to· human beings ancI animals, toxic or noxious, or which by in teraction with other wastes can produce un desirable effects, including deleterious action on the sewerage works or adversly affects any treatment process, constitutes hazard to human or animals, ('1' have an adverse effect upon the receiving water, SEC. 1.09. Radioactive J ttsles: The dis charge of ra ioac ive wastes into the sanitary sewers shall be permitted only if a special permit is obtained prior to the discharge thereof. .While each case will be decided on its own merits, in general, decisions will be in accordance with the principles laid down in Republic Act No. 3589 (1963) creating the Philipine Atomic Energy Com mission (PAEC) and following the rules and reg ulations of that Commission. SEC. 1.10. U~'II.qllal H:JH!tcs: In case 0r Wastes \':hicii-are--~;;-~;;al "in composition, or which contain an ext ruordina rv large amount of ...\l'ltlL 19, 1971 OFFiCIAL Gp..zETTE 29-11. L the undersigned. hereby certify that the fore ~roi n go is a true copy of the resolution adopted by t h« Boar.l of Directors of the National Water works and Sewer.ure Authority, and spread in the minutes of a duly constituted meeting of said Boar.I held on ?lfal'ch 25, ID71. SEC. 1.1·1. lEspection Autho1'ity: Any duly authorized representative of the General Manager possessing proper credentials and identification shall he permitted to enter at reasonable hours the property concerned for the purpose of inspect ing, ohserving, measuring, sampling and testing, in accordance with the provisions of these Reg ulations. SEC. 1.15. Penalties: Owners of property, including but no'f'ITmited to commercial or industrial establishments, found to be violating any provision of these Regulations shall he notified in writing by the General Manager, stating the nature of the violation and providing a .reasonable time limit for the correction thereof. Said owners shall stop all violations within the period of time stated in the notice, and shall certify to the General Manager that thc corrections thereto have been accomplished. The owner of any Property found to be violat ing any provision of these Regulations who shall continue such violation beyond the time Iimit provided for in the above paragraph, shall be liable to the penalty prcscribed in Section 19 of NWSA Resolution No. 202. Series 1968; namely, a fine of not more than five hundred pesos (f'500.00) 01' by imprisonment for not more than six (6) months, or both such fine and imprisonment in the discretion of the court. , . . "-,, -., • ..... .~~ ............;l'J..,~j,.".'.....~ ,;. ,."";•.. ~ •• In cases of repeated violations the " General Manager moreover may revoke the permit for the discharge of wastes into the sewerage system and effect the discontinuation of water or sewer serv ices, 01' both, SEC, 1.16, Validity: These Regulations mo dify or repeal as~he case may be, existing rules and regulations which are inconsistent herewith; and .sha!!, upon approval by the Board of Di rectors of N WSA, take effect fifteen (15) days following the completion of its publication in the Offici« l Gazette. . If any section, sentence, or clause of these Regulations 01' the application of such pro vision to any person and circumstance is cle clared invalid or unconstitutional, the remain del' of these Regulations or the application, of such provision to other persons and cir cumstances shall not be affected by such dec larations." suspended solids or BOD. are high in dissolved solids such as sodium chloride, calcium ('hi.wide, or soriium sulfate; contain' substances conducive to creating jastes or odors in drinking water sup plies or otherwise making such waters unpalatahle even after. conventional water purification treat ment, ior'.are' 'in any other, way unsual, the Gen eralJMaDager shall determine whether su~h wastes slial~JM,prohibited from or may be dls~ha:ged i() the, sanitary sewers or shall be' modified or trelUd before being dischar~~ thereto. !ft' tes hich in the opmion of the Generalr'" as es, w .,. ;Manager are unusual or h1gh,ly ~ar1able in volume, "shall be subject to flow equalization or other forms of regulation as deemed necessary. SEC. 1.11. Sto1'aqe of Dangel'oll,~ Matcriols : The storage of any material iiiSe\~ areas or in areas draining into a sanitary sewer which, because of discharge or leakage from such storage, may create an explosion hazard in sewerage works or in any other way have deleterious effect upon these works, treatment processes, 01' is hazardous to human bei nga or animals, or to the receiving' stream, shall be subject to review by the General Manager who at his discretion may require reason able safeguards to prevent discharge or leakage of large quantities of such materials in the sewers. Sec. 1.12, Cont/'ol Sf I'IIC/II /'e: 'When deemed necessary by tl1e General Manager, the owner of any property served by a building sewer carrying commercial 01' industrial wastes other than normal wastewater shall he required to install and shall maintain at his own expense, a suitable control structure in the building sewer to facilitatc ob servation, sampling and measurement of the wastes, Such structure shall be easily accessible and safely located and shall be constructed in accordance with nla ns previously approved by the General Manager, a nd shall be located so as to permit the gauging' of flow and the collection of samples truly re p reseutiug the wastes leaving' the property. If deemed necessary by the General Manager, auto matic g-auging and sampling equipment shall be installed. SF-c. 1.13, Reports: The owner of any estab lishment disch'!'ii'g~l.:" commercial and industrial wastes to the sanitary sewers shall submit to the Ceucrnl Manager at such intervals as he may prescribed a regular report accurntely describing the character and quantity of all such wastes other l ha n domestic waste water discharrred to the sewers dlll'ing the period covered by the report, In order to insure compliance with these Regulations. the G"lwl'al Manarrer mn y at any time take such mvasurcments. collect such samples, anti run such l:lhorator~T analyses on represeututive samples of all~' wash'S as may Iw' deemed nr-ccssa rv. All tr-st s performed by th» owner 01' by tho (;f'nC'l'Hl Manager shall be ill accordance with :;lan(::u'd laboratory methods. .;.: ;1= * [ 11;- 18] * * * (Sgd.) AHELARDO BARROW Corporate Board Secretary