Builder's Greywater Guide Index
The Builder's GW Guide-bookwill help building professionals or homeowners work within or around building
codes to successfully include greywater systems in new construction or remodeling,
even if they have little prior greywater experience.
This is the index to the book:
A
Absorption capacity. See Infiltration rates/loading rates
Administrative authority,
dealing with 5
Alkalinity. See pH
Appendix G. See Laws: Appendix G
Appendix J. See Laws: Appendix J
Area, minimum required. See Irrigation: area, minimum required
Australia
greywater practices in 39
half pipe leaching chamber design from 17
B
Backwash water (from filter) 31. See also Filtration
Backwater valve. See Valves: backwater. See Valves: backwater
Biocompatible cleaners 24
Blackwater
reuse for irrigation 18
Boron 20, 23
Box trough 15
Burial depth
subsurface drip 32
C
Chemical contamination
travel in soil and groundwater 41
Chlorine 20
in cleaners 23
Cleaners, biocompatible with plants and soil 19, 21, 24
Oasis Biocompatible Products (supplier) 20, 44
study 23
Cleanout v, 35, 36, 37
Clearances 28, 33
Conductivity 23
Constructed wetlands 18
"Create an Oasis with Greywater"
ordering info 44
Crossconnections
with potable water, prohibition of 6
D
Detergent Composition and Greywater. See Cleaners, biocompatible with plants
and soil
Distances, minimum. See Clearances
Diversion/overflow 10
Double ell 12
Drawings and specifications 29
Dual waste plumbing. See Plumbing: dual (greywater & blackwater)
E
Economics
pay back time 3
Eden-like bathing grotto 15
Emitters
subsurface drip 32
minimum spacing 32
Evapotranspiration
systems in Australian GW code 39
table of values 25
F
Fall (for pipes) 14
Fecal matter 33
Filter fabric 32
Filter material. See Gravel
Filtration 2
reqs for subsurface drip 31
G
garden-friendly soaps. See Cleaners, biocompatible with plants and soil
Geologically sensitive area 28
Gravel 32
"Graywater Guide" (state of CA)
how to get a copy 44
Greenhouse 17
bathing grotto in solar greenhouse 15
Greywater
definition 28
human contact with 33
quantities 7, 30
surfacing of 6, 28, 30, 31, 33
definition 29
toilet flushing with 27
Greywater system examples
"anti-septic tank" 18
automated 8, 18
AGWA systems (supplier) 8, 9–11, 44
requirements list 7
box trough 17
drain out back 15
drum with pump, filter, hose 17
legal Australian version 39
drum with pump, filter, mini leachfields 11, 17
drumless laundry 17
enhanced drain out back 15
gravity drum 17
hard plumbing to mini-leachfields 11, 15
infiltration beds 17
landscape direct 15, 16
leaching chambers 17
leachlines under raised bed 18
mini-leachfields 5, 8, 30, 32
for filter backwash 31
max slope for installation 33
requirements list 7
sizing by soil type 34
plants over the septic tank leachfield 17, 18
septic tank & eco chambers 18
septic tank and sand filtration 18
settling tank and leachfields 18
subsurface drip
min number emitters 34
Greywater system(s)
chart for selecting a 4
multifamily and commercial 2, 9, 28
nonconforming 14
unsatisfactory 2
Groundwater
acceptable evidence of depth 30
likelihood of contaminating 30, 40, 41
minimum distance from 30, 40
Gypsum 21
H
Health considerations ii, 19
Dept of health services guide 26
I
Idiot proofness 2
Infiltration rates/loading rates 29, 30
determining for unusual soils 30
for mini-leachfields 34
min and max infiltration rate 30
tests 30
Inspection 5, 8, 29
Irrigation
area, minimum required 7, 30
controllers, soil moisture sensing 9
efficiency 8
fields, construction reqs 31
greywater drip, inadvisability of 17
requirements, estimating 25
subsurface drip 5, 31
Netafim, supplier 44
zones, number required 30
L
Labling requirements
piping 31
stub-out 29
Landscape filter fabric. See Filter fabric
Landslide (GW in geologically sensitive area) 28
Laws
Appendix G iii, 1
Appendix I (septic systems) 28
Appendix J 1, 6, 14
Assembly bill 313 44
Australian Standard 1547 39
Section 1119 of UPC (abandoning underground tanks) 28
Section 201 of the UPC 33
Section 318 of the UPC 29
Uniform Plumbing Code 1, 6, 14, 28
UPC Table 4-3 (vent size) 31
Legality 3, 5
requirements in CA 6
M
Maintenance and Troubleshooting 22
Manual for operation & maintenance. See Owner's manual
Metal. See Gravel
Mini-leachfields
diminsions 37
Minimum distances. See Clearances
O
Operation & maintenance manual. See Owner's manual
Organic matter
to preserve soil quality 20
Overflow. See Surge tanks: drain, overflow, requirements
Owner's manual 6, 28
legal requirement 19
P
Parts for greywater work
identification requirement 29
Pathogens 26
Percolation. See Infiltration rates/loading rates
Perforated pipe 30, 32
Permit 29
pH 20
of cleaners. See Cleaners, biocompatible with plants and soil
Phosphate (in greywater) 23
Piping 31, 32
labling requirements 7, 14, 31
Agwa Systems (label supplier) 44
Plants
cleaners safe for. See Cleaners, biocompatible with plants and soil
maintaining health of 21. See also Soil: quality, preserving & repairing
Plot plan 28
required inclusions 6, 29
Plumbing
dual (greywater & blackwater) 5, 14
definition 14
stub-out for future GWS 29
Potable water
prohibition of connecting to 28
Potassium 23
Pumps v, 2, 22, 32, 35
S
Salt
in cleaners 20, 23
Septic tank 6
100% expansion area 29
clearance from GWS 33
reduction in capacity of 28
site unsuitable for 1
Setbacks. See Clearances
Sewer 6
absence of 1
Sink
kitchen 6
Sodium 23
Soil
loading rates 30
quality, preserving & repairing 19, 23
testing options 29
unsuitable 28
Sprinklers
legal gw distribution through in Australia 39
Storm sewer
prohibition of GW discharge to 33
Stub-out 5, 14. See Plumbing: stub-out for future GWS
Subsurface drip irrigation. See Greywater system examples: automated. See Irrigation:
subsurface, drip
Sullage. See Greywater
Sullage pump out 39. See also Greywater system examples: drum with pump, filter,
hose
Sullage trench 39. See also Greywater system examples: infiltration beds; Greywater
system examples: mini-leachfields
Surface water, clearance from GWS 33
Surface water, likelihood of contaminating 30
Surfacing (of GW). See Greywater: surfacing of
Surge tanks 7, 28
Buried, structural requirements 31
construction 30
drain, overflow, requirements v, 31, 35, 36, 37
effect of large tank on required area 30
inspection requirements 29
labling requirements 31
max retention time 18
not always required 6
venting requirement 31
T
Testing 8, 29
Trap 31
rattlesnakes entering bathtub without 12
running v, 31, 35, 36, 37
Treatment Effectiveness 1, 15, 40
study of high volume sites 43
U
Uniform Plumbing Code. See Laws: Uniform Plumbing Code
Unions 31
User’s manual. See Owner's manual
V
Vacuum breaker 32
Valves 31
access requirement 7, 31
auto flush 32
backwater v, 35, 36, 37
check 31
for surge tank 31
diverter 14
pressure reducing 32
Vegetables 27
prohibition of irrigating w/ GW 33
Venting
required for surge tanks v, 31, 35, 36, 37
W
Washing machine
washing diapers in 29, 33
Water, softened 20
Wells
clearance from GWS 33