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#All pipework, pumps, filters and the cistern are protected from freezing during the winter
#All pipework, pumps, filters and the cistern are protected from freezing during the winter
The first option may be suitable for systems optimized for exterior irrigation only. But regulatory authorities may not permit the use of such seasonal systems as part of a storm water control strategy. Year round systems can be protected from freezing by locating the pipes, pumps and cistern indoors and/or below the frost penetration depth[http://www.raqsb.mto.gov.on.ca/techpubs/ops.nsf/0/ee1f1756eacc00e18525808200628fbf/$FILE/OPSD3090.101%20Rev%231%20Nov2010.pdf].
The first option may be suitable for systems optimized for exterior irrigation only. But regulatory authorities may not permit the use of such seasonal systems as part of a storm water control strategy. Year round systems can be protected from freezing by locating the pipes, pumps and cistern indoors and/or below the frost penetration depth[http://www.raqsb.mto.gov.on.ca/techpubs/ops.nsf/0/ee1f1756eacc00e18525808200628fbf/$FILE/OPSD3090.101%20Rev%231%20Nov2010.pdf].
===Design for Maintenance===
===Design for Maintenance===
Detailed inspection and maintenance advice can be found in [http://www.sustainabletechnologies.ca/wp/wp-content/uploads/2016/08/LID-IM-Guide-7.7-Rainwater-Cisterns.pdf Sustainable Technologies' LID I&M guide].
Detailed inspection and maintenance advice can be found in [http://www.sustainabletechnologies.ca/wp/wp-content/uploads/2016/08/LID-IM-Guide-7.7-Rainwater-Cisterns.pdf Sustainable Technologies' LID I&M guide].
*Can the leaf screens accessed from the roof? Or from a maintenance room?
*Can the leaf screens accessed from the roof? Or from a maintenance room?
*Will the cistern require entry for inspection in the future? How will this be accessed?
*Will the cistern require entry for inspection in the future? How will this be accessed?
''RWH systems producing higher quality water will have additional maintenance requirements. These will depend on the the treatment technologies being used.''
''RWH systems producing higher quality water will have additional maintenance requirements. These will depend on the the treatment technologies being used.''<br>
Take a look at the [[Inspection and Maintenance: Rainwater Harvesting]] page by clicking below for further details about proper inspection and maintenance practices:
{{Clickable button|[[File:Rainwater cistern opening title.PNG|200 px|link=https://wiki.sustainabletechnologies.ca/wiki/Inspection_and_Maintenance:_Rainwater_Harvesting]]}}
The current Ontario Building Code requires that rainwater harvesting systems are designed, constructed and installed to conform to good engineering practice. References are made to ASHRAE, ASPE[https://www.aspe.org/content/arcsaaspeansi-63-2013-rainwater-catchment-systems-electronic-download] and CSA [http://shop.csa.ca/en/canada/plumbing-products-and-materials/cancsa-b1281-06b1282-06-r2016/invt/27024892006] guides for plumbing detailing.
The current Ontario Building Code requires that rainwater harvesting systems are designed, constructed and installed to conform to good engineering practice. References are made to ASHRAE, ASPE[https://www.aspe.org/content/arcsaaspeansi-63-2013-rainwater-catchment-systems-electronic-download] and CSA [http://shop.csa.ca/en/canada/plumbing-products-and-materials/cancsa-b1281-06b1282-06-r2016/invt/27024892006] guides for plumbing detailing.
These guides focus on ensuring that the rainwater does not contaminate or become mistaken for the municipal drinking water supply. Similarly, rainwater must be prevented from becoming contaminated from the sewer. In both cases, an air gap or a back-flow preventer is required.
These guides focus on ensuring that the rainwater does not contaminate or become mistaken for the municipal drinking water supply. Similarly, rainwater must be prevented from becoming contaminated from the sewer. In both cases, an air gap or a back-flow preventer is required.
==Construction==
===Construction Considerations===
For installation of a cistern (either residentially or commercially), it is advisable to have an experienced contractor who is familiar with appropriate cistern sizing, experience using the chosen installation materials, and knowledge of proper site placement to ensure appropriate use and performance of the feature long-term. A minimum one-year warranty is recommended.
===Construction Inspection===
The following items should be inspected prior to final sign-off on the stormwater management construction:
• Catchment area matches original design plans;
• [[Overflow|Overflow system]] is properly sized and installed;
• [[Pretreatment]] system is installed;
• Screens are installed on all openings;
• Cistern foundation is constructed as shown on original design plans; and
• Catchment area and overflow area are properly stabilized.
==Performance==
==Performance==