onsite water recycling & public health issues michelle bilodeau, rehs environmental health...
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Onsite Water Recycling & Public Health Issues
Michelle Bilodeau, REHSEnvironmental Health Specialist IV
San Mateo CountyEnvironmental Health Services
April 15, 2015
Conception of Guidelines
What are non-potable water sources?
Courtesy of SFPUC
Determining Risk as Foundation for Guidelines
SourceExternal Use
Allowed?Internal Use
Allowed?EH Review Required?
TreatmentRequired?
Backflow protection required?
Rainwater Yes Yes Yes Yes Yes
Irrigation Well
Yes No YesDetermined
by UseYes
FoundationDrainage
Yes No YesDetermined
by UseYes
Graywater
Yes No Yes
Determined by Use
Yes
Stormwater
No No N/A N/A N/A
Blackwater
No No N/A N/A N/A
Residential Requirements
Commercial Requirements
SourceExternal Use
Allowed?Internal Use
Allowed?
EH ReviewRequi
red?
TreatmentRequired?
Backflow protection required?
Rainwater Yes Yes Yes Yes Yes
Irrigation Well
Yes No YesDetermined
by UseYes
FoundationDrainage
YesDetermined
by UseYes
Determined by Use
Yes
Graywater
Yes
Determined by Use
YesDetermined
by UseYes
Stormwater
Yes
Determined by Use
Yes Yes Yes
Process Water
Determined by Source and Use
Determined by Source and Use
Yes Yes Yes
Blackwater
No No N/A N/A N/A
Develop material and improve website to make policies regarding onsite water recycling accessible to public
Meeting with Building Officials throughout County
Potential Onsite Water Recycling Ordinance
Next Steps – Local Scale
Health System is part of Technical Guidance for Public Health Standards for Onsite Water Systems
AB1463 – would require SWRCB to “establish water quality standards and distribution, monitoring, and reporting requirements for onsite water recycling systems prior to authorizing the use of onsite recycled water in internal plumbing of residential and commercial buildings”
Larger Scale
Lack of adequate training and knowledge of onsite water recycling
Lack of unified standards, water quality and permitting requirements
Lots of stakeholders involved Resiliency of onsite water recycling systems Water recycling should not replace conservation
Things to Consider
Michelle BilodeauEnvironmental Health SpecialistEnvironmental Health Services
2000 Alameda de las Puglas, Suite 100San Mateo, CA 94403
(650) [email protected]
Questions/Comments?