New-York tribune., 1902-06-22

lame available. and two months ago the filter was
completed and the water was turned into H.
An analysis of the water before ftering showed
thai il Was totally unfit for use. An analysis after
the water had passed through the filter showed
that i substantially pare as the water from
the driven wells, and much purer than the supply
from the unpoluted ponds in the RidgeWood water
she'd The contract for the filter requires that
it shall yield given quantity Of pure water from
BaieIey's Pond every day of experimental opera
tion for three months The quantity OF water to
be filtered is the estimated maximum supply the
pond VIII yield
The Springfield Pond became so polluted about six
years 20 through the failure of the Of pond
above 10 keep i cleaned and his refusal to permit
the city 10 clean It that the further use Of It's
water deemed menace TO the pubhc heallh-
In April. 1881. the conduit was closed against the
waters Of this pond. Baisleys had been about
three years before. and the engineers recommended
the use Of q filter there also This recommendation
unheeded until the appropriation for the inter
&: Baisley's Pond granted. and the Springheld
filter was installed the same time It has also
been in operation experimentally for two months
and II the results far secured continue both
filtration plants viii be accepted within q month.
Mr. De Earona says that there was no patrolling
cleaning Of Baisley's Pond and the streams flow
ing into il from the time the water was shut on
trcm the conduit until the construction Of the hitter
authorized as such patrol and cleaning
would have been a needless waste Of the pubic
money, ss the pond had no more connection Win
the borough water supply than il 1t mad neen on
another island. The department was fully aware o1
The sources OF pollution when it cut the pond OF
from the conduit and had been aware Of them con
stantly while the night for filters going on
Immediately upon the authorization OF the con-
structon Of filters both Baisleys and the Spring
nsd ponds thoroughly cleaned. seventy thou-
sand cuhIc Yards Of muck being removed from the
former and fifteen thousand yards from the latter
The patrol and cleaning forces for both ponds were
restored 70 duty, and have been husily employed
The occasion for the construction of these two
filters is apparent any who visits the sources
in sTringed Resens Pend IS the source Of this
nook, and lies in thctly populated part OF IN ti,e
Of The waters eGee The surface drainage the
brook for the first half mile Of its course is as bad
terialiy improved the Situation cannot be doubted.
out that il is sun bad enough is also beyond cues
ION. mere are stables near Beaket 81 IN,
are situated steep slopes. draining dltcty apNl
second bridge from Femsen's pond was recently
referred 10 in a public statement by Deputy NateT
and outlet and made photogra phs of the various
menaces 70 The purity Of OF the wateT ., o,,zt,tor
q the upper pond at Springfield This pond Is
tation is growing and into which many kinds Of
refuse are drained. Ny. De Narona says the depu-
Pollution were not known 70 the department We're
p~noIy unjustifed Trey consututeG. ne SAYS avs; a
was based Nr. De Narona also SAYS that the con
water
70 the mains of the borough was also wrong. As no
part this water enters the conduit until after II
is filtered
The brook which flows into Simonsons ponds,
peiow Springfield runs directly through one farm
sdId and near perhaps twenty Others. IheSe pondS
sse IT use. but the engineer has already reported
.nat q filter for their waters is needed, and has
Instructed his patronen for that stream perform
s1ef duties with extraordinary vigilance pending
ne provision Of means purifying the water be
-Te Il Is Jet into the conduit.
h. system Of filtration adopted IS thus deScrlped
y. MI De NarOna
The method Of dltraton is not new or experimen
.. a. ~ has been well tried. The method now in use
b5alsiey's and Springfield is in use in a large
aDef OF Cur American cities. and has been fully
succeSsfuly tested by continued use. II IS
si.S".HI as The mechanical American system OF
Tl,- E-ilslsh system In the latter the wate- IS
Trtiice slowly through beds Of sand and gravel
u 'ie mechanical or American system under
S. 5sioA alum sulDhatC other cOagCiant
rFa 80. provision Is made for sedimentation, and
ma -'lt;til ilon proceeds a rapid than
ss o@ recognized By American sanitary engineers
and process, and with properly constructed
upo, .lsetliiy operated plan IL be depended
yItt' "a i4lsf water satisfactory every respect.
.rsttori nc uhoerlyng principle Of mechanical fl
ofss. me same, there various 1ypes of me-
The hters, differing mainly IN details and even
tndi.5S.,n, l2f or litter Is often modified for an
Of f,a C plaIit owing to differences I'm character
MOI TO be treated and to constant Improve
as le oeEices Tor operating filters such
ssulart etc ' '-''e "1 @~lhllHture OF the CO
svs, nc applicability Of the American ~ r,;sj,
Of ori,-s 40 one upon Which there Is some difference
In 3eeias among engineers. the controlling factors
cona,t,oas Delng the character of the waller local
eohh and cost oe Plant. Under either system