|
B.
Residential
7.
Central Sewer Systems
Approximately seven percent of the watershed has access to
a centralized sewer system serving 60 percent of the total population.
The remainder of the watershed is served by on-site wastewater treatment.
Figure 30 below summarizes access to central sewer in the watershed.
|
Figure
30: Central Sewer Access
|
|
|
Total
Acres
|
Total
People
|
Total
Homes
|
|
Sewered
Areas
|
12,358
|
43,315
|
15,497
|
|
Entire
Watershed
|
355,608
|
71,456
|
25,836
|
|
Percentage
Sewered
|
3.48%
|
60.6%
|
60.0%
|
Central sewer service is concentrated along the northern
and eastern boundaries of the watershed in the Union,
Madison
, and
Franklin
Counties
. A number of small subdivisions and
mobile home parks have individual wastewater treatment facilities, or package
plants. Several of these package
plants have violated Ohio EPA point source permits in recent years and are
pollution sources (See Part IV, NPDES Permits). The
City of
Columbus
receives wastewater from several satellite systems, four of which are in the
Darby Watershed; Timberlake, Young Estates, Hilliard, and
Village
Park
. When a rainfall event occurs the
Columbus
sewer lines are often too full to receive additional water from the satellite
systems. This causes these systems
to utilize their sanitary sewer overflows (SSOs) which allows water to escape
the full sewer lines into area ditches, streams, streets, or people’s homes.
These sewer overflows occur during most rain events and contribute
pollution to streams and ditches in
Franklin
County. Only the city of
Columbus
has a permit with Ohio EPA because it is the end discharger.
No record of violations exists for the satellite systems.
Ohio EPA is now working to create permits for SSOs (OEPA, 2005).
All areas in the watershed served by centralized sewer are illustrated in
Map 13 and in Figure 31.
|
Figure
31: Areas Served by Central Sewer in the Watershed
|
|
Name
|
People
|
Homes
|
Acres
|
County
|
Violation*
|
Number
|
|
Other Notes
|
|
Columbus
Metro Area
|
14,305
|
5,820
|
3,024.64
|
Franklin
|
Discharge
to
Scioto
|
|
West Jefferson
|
4,302
|
1,694
|
668.92
|
Madison
|
Yes
|
110
|
|
Lake
Darby
Estates
|
4,057
|
1,359
|
1,324.28
|
Franklin
|
Yes
|
9
|
|
Pickaway
Correctional Institute
|
3,667
|
5
|
1,246.63
|
Pickaway
|
No
|
0
|
|
Plain
City
|
2,884
|
1,221
|
933.11
|
Union
|
Yes
|
12
|
|
Darbydale***
|
1,773
|
684
|
424.80
|
Franklin
|
Not
yet operating ***
|
|
Mechanicsburg
|
1,744
|
761
|
661.50
|
Champaign
|
Yes
|
128
|
|
North Lewisburg
|
1,594
|
699
|
598.78
|
Champaign
|
Yes
|
287
|
|
Marysville
|
1,514
|
458
|
1,203.02
|
Union
|
Discharge
to Mill Cr.
|
|
Village
Park
|
800
|
269
|
80.58
|
Franklin
|
No
permit see above
|
|
Timberbrook
Subdivision
|
750
|
278
|
171.71
|
Franklin
|
Yes
|
121
|
|
Green
Meadows
Mobile
Home Park
|
687
|
256
|
45.75
|
Madison
|
Yes
|
256
|
|
Clark
Lake
Shore
**
|
648
|
240
|
259.51
|
Pickaway
|
Yes
|
60
|
|
Milford
Center
|
626
|
241
|
226.25
|
Union
|
Tied
to Marysville
|
|
Timberlake
|
539
|
189
|
151.20
|
Franklin
|
No
permit see above
|
|
Fox
Lair
Mobile Home
Park
**
|
439
|
166
|
37.19
|
Pickaway
|
Yes
|
65
|
|
New
California
|
341
|
119
|
324.04
|
Union
|
Tied
into Marysville
|
|
Woodstock
|
317
|
105
|
173.86
|
Champaign
|
Tied
to
N. Lewisburg
|
|
Darbyville
|
300
|
102
|
309.41
|
Pickaway
|
Yes
|
8
|
|
Oakhurst
Knolls
|
300
|
106
|
63.37
|
Franklin
|
Yes
|
20
|
|
Orient
|
269
|
102
|
79.42
|
Pickaway
|
Tied
into PCI
|
|
Canaan
Community Mobile Homes
|
250
|
95
|
33.91
|
Madison
|
Yes
|
361
|
|
Jefferson
Lodge
Mobile
Home
Park
| |
