Recycling Treated Municipal Wastewater for Industrial Water Use

Appendix B
Status of Water Reuse Regulations and Guidelines
Table 6. Florida Water Reuse Rules for Ground Water Recharge and Indirect
Potable Reuse
Type of Use Water Quality Limits
200 fecal coli/100 ml
Treatment Required
Ground water recharge via 20 mg/L CBOD5
Secondary
rapid infiltration basins (RIBs) 20 mg/L TSS
12 mg/L NO3 (as N)
No detectable fecal coli/100 ml
Disinfection
Ground water recharge via
RIBs in unfavorable
conditions
Ground water recharge or
injection to ground waters
having TDS < 3000 mg/L
Ground water recharge or
injection to ground waters
having TDS 3,000-10,000
mg/L
Indirect potable reuse:
discharge to Class I surface
waters (used for public water
supply)
Craddock Consulting Engineers B-16
In Association with CDM & James Crook
WWReuse Tm1_Appendix B_Regulatory.doc
20 mg/L CBOD5
5.0 mg/L TSS
Primary a & secondary drinking
water standards
10 mg/L total N
No detectable total coli/100 ml
20 mg/LCBOD5
5.0 mg/L TSS
3.0 mg/L TOC
0.2 mg/L TOX b
10 mg/L total N
Primary a & secondary drinking
water standards
No detectable total coli/100 ml
20 mg/LCBOD5
5.0 mg/L TSS
10 mg/L total N
Primary drinking water standards a
No detectable total coli/100 ml
20 mg/LCBOD5
5.0 mg/L TSS
3.0 mg/L TOC
10 mg/L total N
Primary a & secondary drinking
water standards
WQBELs c may apply
Secondary
Filtration
Disinfection
Secondary
Filtration
Disinfection
Multiple barriers for control
of pathogens & organics
Pilot testing required
Secondary
Filtration
Disinfection
Secondary
Filtration
Disinfection
a Except for asbestos.
b TOX = total organic halogen.
c WQBELs are water quality based effluent limitations to ensure that water quality standards in a
receiving body of water will not be violated.
Source: Adapted from Florida Department of Environmental Protection [1999].
The Florida regulations include requirements for planned indirect potable reuse by
injection into water supply aquifers and augmentation of surface supplies. A minimum
horizontal separation distance of 500 feet is required between reclaimed water injection
wells and potable water supply wells. The injection regulations pertain to G-I, G-II, and
F-I ground waters, all of which are classified as potable aquifers. Reclaimed water must
meet G-II ground water standards prior to injection. G-II ground water standards are,
for the most part, primary and secondary drinking water standards. Florida considers