Proposed District Plan Chapter 25.13 - Three Waters Rule - - PowerPoint PPT Presentation

Proposed District Plan Chapter 25.13 - Three Waters

Rule 25.13.4.5a Water Efficiency Measures Reconvened Hearing 6 November 2014

Presentation Outline

• 1. Background
• 2. Submissions
• 3. Key findings from assessment of water reuse systems
• 4. Conclusions
• 5. Recommendation
• 6. Water efficiency measures retained in the Plan

Background

• Hearing of Ch25.13 held on 6 November 2013
• Decision on Rule 25.13.4.5a deferred
• HCC engaged Wainui Consulting Ltd to assess

water reuse for residential dwellings in Hamilton

Summary of Submissions

Plan Section Topic Submissions Further Submissions Number Number

• f Points

Number Number

• f Points

Rule 25.13.4.5a Water Efficiency Measures 11 11 2 2

Scope of Submissions

Relief Sought Number of Submissions Further Submissions Make rainwater & grey-water reuse mandatory 1 Retain requirements with amendments 3 Reduce or delete requirements 1 1 Delete requirements 6 1 Total 11 2

Key Findings from the Assessment of Rainwater Reuse Systems

• No financial return directly to residents who

invest in reuse systems

• Rainwater reuse systems used solely for

reducing potable water consumption are uneconomic

• Tanks will be empty during droughts, so will

not significantly reduce peak water demand

Key Findings from the Assessment of Grey-water Reuse Systems

• No financial return directly to residents who

invest in grey-water reuse systems

• Ministry of Health: Does not support grey-

water reuse in homes because of health risks

Conclusions

• Retaining the part of Rule 25.13.4.5a relating to

water supply and wastewater would be inequitable and unfair

• Requiring rain water or grey water reuse systems

is not an efficient or effective method to achieve the objectives of the plan

• This part of the rule should be deleted

Recommendation

• The changes within the Track Changed Version
• f Rule 25.13.4.5a of the Proposed District

Plan be accepted

Rainwater and grey-water reuse systems

• Remain in definition of “water sensitive

techniques” (Vol 2, s1.1.2)

• Could be required by a Water Impact

Assessment or Integrated Catchment Management Plan where justified

• Rain tanks are possible water sensitive

technique for stormwater (25.13.4.5a)

Other Water Efficiency Provisions retained in Plan

Low flow fixtures will be required in:

• New residential units (25.13.4.5a)
• Other new buildings containing a kitchen,

laundry or bathroom (25.13.4.5a)

• Alterations or additions to any existing

building that add an extra toilet, kitchen, laundry or bathroom (25.13.4.5c)

Any questions?