[Adopted 6-5-1974 as §§ 12-2, 12-3 and 12-4
of the 1974 Code]
[Amended 8-10-1994]
There shall be no tapping into any public sewer
system unless a permit is granted therefor by the Water Pollution
Control Authority.
After a person has obtained a permit, the tapping
into any public sewer system shall be under the supervision of the
Town Sewer Maintenance Official or Building Official, and only at
such point or points as shall be designated by said officials.
No surface water will be permitted to enter
any public sewer. Water from roofs, automobile wash stands and cellars
is strictly prohibited from entering any public sewer.
[Adopted 7-31-1974 (Ch. 12, Art. II of the 1974 Code)]
In order to assure the proper disposal of sewage
and wastewaters and the proper operation and maintenance of the public
sewers, sewage treatment plant and other sewage works within the Town
of Ridgefield, Connecticut, and to provide an adequate record of sewers,
drains, appurtenances and connections thereto, the following regulations
are enacted by the Town of Ridgefield, Connecticut, under the authority
of C.G.S. Ch. 103, § 7-246, as amended.
[Amended 10-5-1983; 8-10-1994]
Unless the context specifically indicates otherwise,
the meaning of terms used in these regulations shall be as follows.
"Shall" is mandatory; "may" is permissive.
AERATOR
Includes any device which attaches to the faucet which breaks
up into fine droplets and entrains air into the water which flows
from that faucet.
BASEMENT FLOOR DRAIN
Includes all pipes together with all other structures or
equipment appurtenant thereto provided to carry water, either subsoil
drainage or otherwise, from the floor of the lowest level of a structure.
BOD (denoting "biochemical oxygen demand")
The quantity of oxygen utilized in the biochemical oxidation
of organic matter under standard laboratory procedure in five days
at 20° C., expressed in milligrams per liter by weight.
BUILDING DRAIN
That part of the lowest horizontal piping of a building drainage
system that receives the discharge from the soil, waste, and other
drainage pipes inside the walls of the building and conveys it to
the building sewer, beginning five feet outside the inner face of
the building wall.
CHLORINE DEMAND
The amount of chlorine which must be added to water or waste
to produce a residual chlorine content of at least 1/10 milligram
per liter after a minimum contact time of 10 minutes.
COOLING WATER
Includes the wastewater from air-conditioning, industrial
cooling, condensing and hydraulically powered equipment or similar
apparatus.
DESIGNATED AGENT
A person appointed by the Sewer Authority to represent the
Authority in the field.
DRAIN LAYER or CERTIFIED DRAIN LAYER
Either an individual, partnership or corporation to whom
or to which the Sewer Authority of the Town of Ridgefield has issued
a certificate to install, alter or repair sewers, sewer connections,
house connections, etc., during the period when such certificate is
valid, and the proper agents and representatives of such drain layer.
FLOW RESTRICTOR
Includes any device that limits the amount of flow possible
through a fully opened spigot or shower head to no more than four
gallons per minute at a pressure of 35 pounds per square inch.
GARBAGE
Solid wastes from the preparation, cooking, and dispensing
of food and from handling, storage, and sale of produce. "Properly
shredded garbage" shall mean garbage which has been shredded so that
no garbage particles will be greater than 1/2 inch in any dimension.
NATURAL OUTLET
Any outlet into a watercourse, pond, ditch, lake or other
body of surface or ground water.
PERSON
Any individual, firm, company, association, society, corporation,
or group.
pH
The logarithm of the reciprocal of the weight of hydrogen
ions in grams per liter of solution.
SEWAGE
Wastewater or water-carried wastes from residences, business
buildings, institutions, and industrial establishments. Sewage shall
be further classified as follows:
A.
DOMESTIC OR SANITARY SEWAGEThe solid and liquid wastes from toilet and lavatory fixtures, kitchens, laundries, bathtubs, shower baths, or equivalent plumbing fixtures as discharged from dwellings and business and industrial buildings.
B.
INDUSTRIAL SEWAGE OR WASTESThe water-carried wastes of any industrial process as distinct from domestic or sanitary sewage. All substances carried in industrial wastes, whether dissolved, in suspension, or mechanically carried by water, shall be considered as industrial wastes.
SEWER
The pipe, together with manholes and other structures or
equipment appurtenant thereto, provided to carry sewage. Sewers shall
be further classified as follows:
A.
PUBLIC SEWERA trunk, main or lateral sewer up to and including the "Y" branch or tee provided for connection thereto and to which all owners of abutting properties have equal rights and which is controlled by public authority. The public sewer does not include the building or house sewer, or the building connection lateral after it is connected with a building sewer.
B.
SANITARY SEWERA sewer which carries only sanitary sewage and to which stormwater, subsoil drainage, and cooling water are not intentionally admitted.
D.
BUILDING OR HOUSE CONNECTION LATERALThe pipe laid incidental to the original construction of a public sewer from said public sewer up to some point at the side of the street, highway, or similar location, and there capped, having been provided and intended for extension and for use at some time thereafter as part of a building or house sewer connection.
SEWERAGE WORKS
All facilities for collecting, pumping, treating, and disposing
of sewage or wastewater.
SEWER AUTHORITY
The Water Pollution Control Authority of the Town of Ridgefield.
SEWER DISTRICT
That area within the Town of Ridgefield which is now or may
in the future be served by public sewers.
SLUG
Any discharge of water, sewage, or industrial waste which
in concentration of any given constituent or in quantity of flow exceeds
for any period of duration longer than 15 minutes more than five times
the average twenty-four-hour concentration or flow during normal operation.
STORM SEWER or STORM DRAIN
A pipeline carrying stormwater, subsoil drainage, acceptable
cooling water or other reasonably clean waters, but excluding sewage
and polluted industrial wastes.
STORMWATER
Includes the runoff or discharge of rain and melted snow
or other water from roofs, surfaces of public or private lands, or
elsewhere. Stormwater shall also include subsoil drainage as defined
in this section.
SUBSOIL DRAINAGE
Includes water from the soil percolating into subsoil drains
and through foundation walls, basement floors, or underground pipes.
SUSPENDED SOLIDS
Solids that either float on the surface of or are in suspension
in water, sewage, or other liquids and which are removable by filtering
as prescribed in Standard Methods for the Examination of Water, Sewage
and Industrial Waste, American Public Health Association.
TOWN
The Town of Ridgefield, Connecticut.
WATERCOURSE
A channel in which a flow of water occurs, either continuously
or intermittently.
[Amended 10-5-1983; 1-8-1992]
A. No person shall discharge or cause to be discharged
into any public sewer of the Town of Ridgefield any waste other than
domestic or sanitary sewage without first obtaining a permit to do
so from the Sewer Authority.
B. No person shall discharge or cause to be discharged
any compressed air, steam, storm, stormwater, surface water, groundwater,
roof runoff, subsurface drainage, cooling water, air-conditioning
and refrigerating wastewaters, unpolluted industrial process waters,
sump pump discharges or basement floor drain to any sanitary sewer.
C. Except as hereinafter provided, no person shall discharge
or cause to be discharged any of the following described waters or
wastes to any public sewer:
(1) Any liquid or vapor having a temperature higher than
150° F.
(2) Any water or waste which may contain more than 100
milligrams per liter by weight of fat, oil, wax or grease or containing
other substances which may solidify or become viscous at temperatures
between 32° and 150° F.
(3) Any gasoline, benzene, naphtha, alcohol, tar, fuel,
oil, or any other flammable or explosive liquid, solid, gas or vapor.
(4) Any garbage except properly shredded garbage. The
installation and operation of any garbage grinder equipped with a
motor of 3/4 horsepower or greater shall be subject to the review
and approval of the Sewer Authority.
(5) Any ashes, cinders, stones, sand, mud, straw, grass
clippings, shavings, sawdust, metal, sticks, coarse rubbish, glass,
rags, feathers, plastics, waste rubber, wood, paunch manure, animal
guts or tissues, entrails, blood, hair or hides, or other substance
likely to damage, destroy or cause an obstruction to the flow in any
sewer or which may interfere with the proper operation of the sewage
works.
(6) Any waters, sewage or wastes having a pH lower than
five or higher than 9.5 or having any other corrosive or detrimental
property capable of causing damage or hazard to the sewage works or
personnel.
(7) Any waters or wastes containing a toxic, poisonous
or radioactive substance in sufficient quantity to injure or interfere
with any sewage treatment process or to constitute a hazard to humans,
animals or marine life or to create any hazard in the receiving waters.
(a)
The following toxic or poisonous substances
shall not be present in any appreciable quantity of industrial or
commercial process discharges in excess of the following limits in
milligrams per liter by weight. Should the federal or state government
promulgate pretreatment standards on toxic, poisonous and hazardous
materials that differ from the Town limitations, the more stringent
of the limitations shall apply.
[1]
Cyanides: one milligram per liter.
[2]
Copper, zinc, nickel, cadmium, iron, chromium,
lead, tin, silver, mercury or other metals, or the salts thereof:
five milligrams per liter.
(b)
Radioactive wastes or materials may be discharged
into a public sewer if Conditions I and II below are met and if either
Condition III or IV is also met, provided that such discharges are
in compliance with applicable state or federal regulations:
[1]
Condition I. Such wastes must be readily soluble
or dispersible in water.
[2]
Condition II. The gross quantity of all radioactive
materials so discharged must not exceed one curie per year.
[3]
Condition III. The daily quantity of any radioactive
material, if diluted by the average daily volume of sewage discharged
into the system from the installation, must not exceed the maximum
concentrations allowed by regulations of the United States Atomic
Energy Commission.
[4]
Condition IV. Daily quantities of radioactive
materials up to the maximum permitted by the United States Atomic
Energy Commission may be so discharged provided that the total monthly
quantities, if diluted by the average monthly volume of sewage discharged
from the installation, do not exceed the concentrations permissible
under Condition III above.
(8) Any noxious, malodorous or taste-producing gas, vapor
or substance, such as phenols, capable of creating a public or private
nuisance or which may prove toxic to sewage treatment processes or
which may exceed acceptable limits for discharge to receiving waters.
(9) Materials which exert or cause:
(a)
Unusual concentrations of inert suspended solids
(such as, but not limited to, Fullers earth, lime slurries, and lime
residues) or of dissolved solids (such as, but not limited to, sodium
chloride and sodium sulfate).
(b)
Excessive discoloration (such as, but not limited
to, dye wastes and vegetable tanning solutions).
(c)
Unusual BOD, suspended solids, chemical oxygen
demand, or chlorine requirements in such quantities as to constitute
a significant load on the sewage treatment works.
(d)
Unusual volume of flow or concentration of wastes
constituting slugs as defined herein.
(10)
Waters or wastes containing substances which
are not amenable to treatment or reduction by the sewage treatment
processes employed or are amenable to treatment only to such degree
that the sewage treatment plant effluent cannot meet the requirements
of other agencies having jurisdiction over discharge to the receiving
waters.
D. If any waters or wastes are discharged or are proposed to be discharged to the public sewers, which waters contain the substances or possess the characteristics enumerated in Subsection
C and which in the judgment of the Sewer Authority may have a deleterious effect upon the sewage works, processes, equipment, or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the Sewer Authority may:
(2) Require pretreatment to an acceptable condition for
discharge to the public sewers;
(3) Require control over the quantities and rates of discharge;
and/or
(4) Require payment to cover the added cost of handling
and treating the wastes not covered by existing taxes or sewer charges.
E. Determination of exclusion of wastes. In determining
whether any waste discharged or proposed to be discharged into any
public sewer is to be excluded, consideration will be given to the
quantity, time or times, rate and manner of discharge, dilution and
character of the waste in question, the size of the sewer into which
the waste is to be discharged, the probable quantity of sewage or
other wastes likely in said sewer, and other pertinent facts. Minute
quantities of a waste which would be objectionable in larger quantity
may be accepted if sufficiently diluted when and as discharged, or
if the quantity discharged is small as compared with the flow in the
receiving sewer, but any permission to discharge minute quantities
of an otherwise excluded waste shall be revocable at any time by the
Sewer Authority.
F. Pretreatment facilities. At all premises where wastes
or substances specified to be excluded from public sewers by these
regulations are present and liable to be discharged directly or indirectly
into said sewers, suitable and sufficient piping layouts, oil, grease,
sand and flammable waste traps, or absolute grease separators, screens,
settling tanks, diluting devices, storage or regulating chambers,
treatment, cooling or other equipment and devices shall be provided.
These shall be maintained and properly operated by the owner of the
premises or his agent at his expense to ensure that no waste or substance
is discharged in violation of these regulations.
(1) On premises where any of the wastes or substances as described in this Subsection
C of this section are present, the Sewer Authority may require the owner to provide, operate and maintain at his (the owner's) expense a sampling well or wells, flow measuring devices, manholes or other appurtenances, all readily accessible, on the building sewer or drain from said premises near the point where said sewer or drain connects to the public sewer. By means of said sampling well or wells, flow measuring devices, or other appurtenances, the owner, occupants of said premises, the Sewer Authority's designated agent, or any public officer having legal jurisdiction may secure samples of or examine the wastes being discharged into the public sewer for the purpose of determining compliance or noncompliance with the requirements of these regulations. In the event that no special manhole has been required, the control manhole shall be considered to be the nearest downstream manhole in the public sewer to the point at which the building sewer is connected.
(2) If the Sewer Authority permits the pretreatment or
equalization of waste flows, the design and installation of the plants
and equipment shall be subject to the review and approval of the Sewer
Authority and of any and all state regulatory agencies having jurisdiction,
and no construction of such facilities shall be commenced until said
approvals are obtained in writing.
(3) On premises where pretreatment plants and equipment
are to be installed, the Sewer Authority may require the owner to
provide a control valve to permit prohibited discharges to be diverted
away from the public sewer in the event of a malfunction of such pretreatment
facilities. The control valve will be under the sole jurisdiction
of the Sewer Authority and no person other than the Sewer Authority's
designated agent will be permitted its use.
G. The Sewer Authority's designated agent shall have
the right to enter and inspect any part of the premises served by
public sewers upon which there may be reason to believe that violations
of the requirements of these regulations have occurred or are likely
to occur, for the purpose of ascertaining the facts as to such violation
or suspected violation, or of obtaining samples of wastes, or of inspecting
flow-measuring devices or treatment facilities provided to prevent
prohibited discharges, or of regulating discharges through control
valves.
H. All measurements, tests, and analyses of the characteristics
of water and wastes to which reference is made in this section shall
be determined in accordance with the Standard Methods for the Examination
of Water and Sewage, published by the American Public Health Association.
I. No statement contained in this section shall be construed
as preventing any special agreement or arrangement between the Sewer
Authority and any industrial concern whereby an industrial waste of
unusual strength of character may be accepted by the Sewer Authority
for treatment, subject to payment therefor by the industrial concern,
provided that such agreements do not contravene any requirements of
existing federal laws and are compatible with any user charge and
industrial cost recovery system in effect.
J. Any waste disposal practice prohibited by the Environmental
Protection Agency or Connecticut Department of Environmental Protection
shall be deemed prohibited hereunder.
The following requirements of this section shall apply to any person certified by the Sewer Authority to do sewer work and who has a building or house sewer permit to do such sewer work, as provided in §§
298-11 and
298-12 of these regulations.
A. No person shall make connection of roof downspouts,
exterior foundation drains, areaway drains, or other sources of surface
runoff or groundwater to a building sewer or building drain which
in turn is connected directly or indirectly to a public sanitary sewer.
B. Old building sewers may be used and connected to a
public sewer only when they are found on examination or test by the
Sewer Authority's designated agent to meet all requirements of this
section. The Sewer Authority may require, where indicated, the uncovering
of old sewers for inspection.
C. A separate and independent building sewer shall be
provided for every building, except that, when two or more buildings
are so situated that separate and independent building sewers for
each building would be impractical or impose unnecessary hardship,
the Sewer Authority may authorize a single building sewer connection
to the public sewer, subject to such terms and conditions as to easement,
design and construction as the Sewer Authority may require.
D. No building shall be connected to a public sewer unless
the plumbing system of said building has a soil vent pipe extended
to a point above the roof. The Sewer Authority may require that no
running trap, main house trap, or other device which might prevent
the free flow of air throughout the whole course of the building sewer,
house drain and said soil vent pipe will be allowed.
E. The building sewer shall be cast-iron soil pipe, vitrified
clay sewer pipe, asbestos-cement sewer pipe, or plastic pipe of the
type known as polyvinyl chloride (PVC) sewer pipe, Type I, Grade 1,
or equal. Any material other than those listed must have the approval
of the Sewer Authority. All pipe materials shall conform to the latest
standard specification of the American Society for Testing and Materials
(ASTM). Wherever possible, water service and house sewer pipes shall
be laid in separate trenches. Where laid in the same trench, the water
pipe shall be laid on a bench at least 12 inches above the top of
the sewer pipe and at least 12 inches and preferably 18 inches from
the side of the sewer trench. Cast-iron pipe with leaded joints may
be required by the Sewer Authority where the building sewer is exposed
to damage by tree roots. If installed in filled or unstable ground,
the building sewer shall be of cast-iron soil pipe, except that nonmetallic
material may be accepted if laid on a suitable concrete bed or cradle
as approved by the Sewer Authority. No building sewer shall be located
within five feet of a cellar drain or groundwater drain unless pipe
is of cast iron with leaded joints.
F. The size and slope of the building sewer shall be
subject to the approval of the Sewer Authority, but in no event shall
the pipe diameter be less than four inches, nor shall the slope of
such building sewer be less than 1/8 inch per foot.
G. In all buildings where the building drain is too low
to permit gravity flow to the public sewer, sewage or other wastewaters
carried by such drain shall be lifted by approved artificial means
and discharged to the building or house connection lateral through
a cast-iron force main or asbestos-cement pressure pipe. All joints,
including that with the building sewer, shall be made gastight and
watertight by a method approved by the Sewer Authority.
H. All excavations required for the installation of a
building sewer shall be open trench work unless otherwise approved
by the Sewer Authority. In every case work shall proceed from the
house connection lateral or "Y" branch to the structure involved,
and pipe laying shall start at said building or house connection lateral
or "Y" branch and proceed toward the structure to be served. In no
event shall pipe laying start at the building or structure involved
and proceed toward the public sewer.
I. Whenever possible the building sewer shall be brought
to the building at an elevation below the basement floor. No building
sewer shall be laid parallel to or within three feet of any bearing
wall, which might thereby be weakened. The depth of the building sewer
shall be sufficient to afford protection from frost and in general
such depth shall not be less than 30 inches below the finished ground
surface at all points. All building sewers shall be laid at uniform
grade and in straight alignment insofar as possible. Changes in direction
shall be made only with properly curved pipe and fittings. Building
sewers shall be laid on firm, undisturbed soil or a suitable foundation;
they shall be located at a sufficient distance from other parallel
pipes to permit alterations or repairs to any such pipes or to the
sewer pipe without disturbing the other; they shall be well cleaned
inside after laying; and they shall conform to all reasonable requirements
for good construction. Backfill placed over building sewers shall
be done with hand tools to a depth of at least one foot over the pipe,
using fine earth free from stones and rubbish. Backfill shall be well
and carefully tamped over the sewer. The open ends of building sewers,
building drains and building connection laterals shall be kept closed
or protected during construction and during periods when work is suspended,
in order to exclude from the public sewer all water or debris which
might obstruct, damage or otherwise be detrimental to the public sewer
or sewage works. Abandoned building sewers or drains shall be likewise
promptly closed and sealed off from any public sewer at the expense
of the owner of the property.
J. Joints and connections.
(1) All joints and connections for or between building
sewers, building drains, and building connection laterals shall be
made gastight and watertight:
(a)
Cast-iron pipe joints shall be firmly packed
with oakum or hemp and filled with molten lead, federal specification
QQ-L-156, not less than one inch deep. Lead shall be run in one pouring
and caulked tight. No paint, varnish, or other coatings shall be permitted
on the jointing material until the joint has been tested and approved.
(b)
Joints on plastic sewer pipe shall be made with
solvent cement consisting of a viscous, brushable solution of polyvinyl
chloride in suitable active solvents, or rubber gaskets.
(c)
All joints in vitrified clay pipe, asbestos-cement
pipe, or other approved pipe, or between such pipes and metals, shall
be made with rubber or similar gaskets. Hot-poured jointing materials
or cement mortar shall not be approved.
(2) No jointing material other than those listed may be
used without prior approval of the Sewer Authority.
K. The connection of the building sewer to the public
sewer shall be made at the curb fitting, if provided, or at the "Y"
branch, if such branch is available at a suitable location. If the
public sewer is 12 inches in diameter or less and no properly located
"Y" branch is available, the owner shall at his expense install a
"Y" branch in the public sewer at the location specified by the Sewer
Authority and under the direct supervision of the Sewer Authority's
designated agent. Where the public sewer is greater than 12 inches
in diameter and no properly located "Y" branch is available, a neat
hole may be cut into the public sewer to receive the building sewer
at the location specified by the Sewer Authority and under the direct
supervision of the Sewer Authority's designated agent. Entry shall
be made in the downstream direction at an angle of about 45°.
A forty-five-degree ell may be used to make such connection, with
the spigot end cut so as not to extend past the inner surface of the
public sewer. Where the public sewers are of asbestos-cement sewer
pipe, the connection may be made with a cast-iron saddle, in the event
no fitting is available on the public sewer. The invert of the building
sewer at the point of connection of twelve-inch diameter sewers or
larger shall be connected to either match the center lines of such
sewers or be higher. A smooth, neat joint shall be made and the connection
made secure and watertight by encasement in concrete. Special fittings
may be used for the connection only when approved by the Sewer Authority.
L. When excavation is to be made in a street or highway,
work shall proceed in full accordance with the Town and/or state specifications
for such work.
M. When the building sewer trench has been excavated
and the building sewer constructed, altered or repaired and is ready
for inspection and connection to the public sewer, the Sewer Authority
shall be notified during regular working hours, not less than 12 hours
in advance of the time when the connection to the public sewer is
planned. The connection of the building sewer to the public sewer
shall be made under the direct supervision of the Sewer Authority's
designated agent, and a record of all said connections shall be kept
by the Sewer Authority. Under no circumstances shall backfill be permitted
around and over the pipe until the pipe, joints, lines, elevations
and workmanship have been inspected and approved by the Sewer Authority's
designated agent. If any person constructs, installs, alters or repairs
any building sewer or drain connecting with a public sewer in the
Town of Ridgefield in violation of any section of these regulations,
or fails to give adequate notice to the Sewer Authority for an inspection
of the work, said Sewer Authority may order all or any portion of
said work to be uncovered for inspection and approval.
N. All excavations for building sewer installations shall
be adequately guarded with barricades and lights so as to protect
the public from hazard.
O. If any person, after proper order or direction from
the Sewer Authority, fails to remedy any violation of this section
or of any other section of these regulations, the Sewer Authority
may disconnect the building sewer of the property where the violation
exists from the public sewer and may collect the cost of making such
disconnection from any person or persons responsible for, or willfully
concerned in, or who profited by such violation of the requirements
of these regulations.
The Sewer Authority's designated agent or other
duly authorized employees of the Town bearing proper credentials and
identification shall be permitted to enter upon all properties for
the purposes of inspection, observation, measurement, sampling, and
testing, in accordance with the provisions of these regulations.