NEOBIOME

CR_050: Neobiome NZ off-grid infrastructure cost reference (July 2026 web synthesis)

Properties4
typesource
source_typecr
authorAI deep research
topicswater_supply_treatment, waste_circular, energy_generation, nz_specific

9 min read

CR_050: Neobiome NZ off-grid infrastructure cost reference (July 2026 web synthesis)

Neobiome NZ off-grid infrastructure cost reference (July 2026 web synthesis)

Advances RT_310 (stream intake/treatment), RT_312 (asset lives), RT_313 (water reticulation), RT_314 (greywater) — none resolved

AI-compiled synthesis, medium confidence — no figure is applied to a model cell on this source’s authority alone. This page records the data + confidence + a Tier map; the six Tier-1 primaries behind the applyable numbers are raised as RT_316–321 for retrieval + grep-verification. Tier-3 trade-blog figures (HW-cylinder & poly-tank lives, Facebook plant costs, news) are plausibility context only.

Summary

A bespoke four-section NZ cost synthesis (32 references) built to firm four NEOBIOME model inputs. (1) Small surface-water intake + treatment: no single NZ /m³·day benchmark; triangulated **~2,000–8,000/m³·day** → a 50-dwelling (~10 m³/day) treatment plant ~150,000–400,000**; water-take consent all-in (non-notified stream take) **~15,000–35,000 — independently corroborating CR_045. (2) Asset service lives: rainwater poly tanks 10–20 yr (concrete/SS 20–30+), electric HW cylinders 10–15 yr (SS/copper longer), concrete septic 30–40 yr+ (AWTS motor/pump 5–10 yr), pre-insulated district-heat mains 30 yr min (EN 253) / 50 yr planning. (3) Community water reticulation: ~5,000–20,000/dwelling** full scheme; 100 mm HDPE main **1,600–2,500/m installed (⚠ CORRECTED — this band is the 1050 mm RCRRJ stormwater rate, not a watermain; verified watermain rate is 200–350/m per [[ot_113_ladies-mile-dbc-civil-rates-2018|OT_113]]); national-assessment-derived **~3,300–5,000/connection**. (4) Greywater reuse installed: manual diverter 500–1,500, pumped GWDD 1,800–3,000 (unit 1,281 excl GST = the same WCTNZ figure as CR_048), full treated in-house reuse **8,000–18,000**.

Key claims

- claim: "SURFACE-WATER TREATMENT + CONSENT (RT_310). No single published NZ $/m³·day benchmark for sub-community-scale surface-water schemes. Triangulated planning band ~$2,000–8,000/m³·day capex (coag/floc/filtration/UV; very small <20 m³/day flows toward the top due to fixed overheads) → a 50-dwelling / ~10 m³/day scheme ≈ $150,000–400,000 for the treatment plant alone (excl. intake civils + reticulation). Brackets: FILTEC CIP-funded rural modular programme >$27M / 100+ marae & rural plants ≈ ~$270,000/plant (20–100 m³/day units → ~$2,700–13,500/m³·day); Motueka WTP (township) ~$3.5M. Water-take consent (non-notified stream take, all-in): ~$15,000–35,000 = Auckland non-notified deposit $7,000 + Marlborough base ~$7,218 (council fee schedules) + applicant AEE/planner/consultant $10,000–30,000 (MfE rural-water CBA); full publicly-notified $50,000–200,000+. CONFIDENCE: treatment capex Medium; consent High (per source)."
  source_location: "§1; FILTEC programme page [^1]; Motueka WTP Facebook [^2, weak]; Auckland Council [^3] + Marlborough DC [^4] fee schedules; MfE NES-DW rural CBA [^5]; planningplus.co.nz [^7] ⚠ [^1] (the FILTEC programme page) was retrieved verbatim as URL_027 and carries NO cost figure — the '>$27M / ~$270k/plant' bracket in the claim above is NOT supported by [^1]; its provenance is unestablished (do NOT confuse with [^24, weak] NZ Herald/CIP, which is a §3 reticulation reference, not this §1 bracket)."
- claim: "ASSET SERVICE LIVES (RT_312; feed params.ASSET_LIFE replacement reserve). Rainwater tanks: poly 10–20 yr (most warranties 10 yr) / concrete 20–30 yr+ / stainless 20–30 yr+ / fibreglass 15–25 yr — MBIE recommends 2–5-yearly clean-out. Hot-water: electric cylinder 10–15 yr / copper 15–20 / stainless 20–40 / gas continuous-flow 10–15 / heat-pump 10–15 (compressor) / solar collector 20–25. Septic/AWTS: concrete tank 30–40 yr+ (Waimate DC AMP uses 80-yr base life for concrete septic infrastructure) / poly tank 20–30 / AWTS aeration motor 5–7 / pump 8–10; G14 requires 6-monthly AWTS service. District-heat pre-insulated mains: EN 253:2019 minimum 30-yr design life at ≤120°C; practical European field life 50–100 yr; Energiforsk 2022 field study 40–60 yr mean (PU-foam insulation is the limiting factor, not the steel service pipe) — no NZ-specific standard. WARNING: HW-cylinder and poly-tank lives rest on NZ trade-blog sources (Tier-3) → plausibility context only; the DH (EN 253 / Energiforsk) and septic (Waimate AMP) lives have Tier-1 primaries."
  source_location: "§2; smartwateronline [^8], plumber/tradie blogs [^10–15], BioCycle [^16] (Tier-3); building.govt.nz [^9], level.org.nz [^17], Waimate DC AMP [^18]; EN 253 via Chalmers 520167 [^19], dbdh [^20], Energiforsk 2022:872 [^21]"
- claim: "COMMUNITY WATER RETICULATION (RT_313; fills the AF-16 gap — the model's costed 'reticulation' line is ELECTRICAL, CR_027; water distribution beyond per-dwelling rainwater was uncosted). Triangulated planning band ~$5,000–20,000/dwelling for a full reticulation scheme (trunk + distribution + service connections + header tank/reservoir; clustered/high-density ~$5,000–8,000, dispersed lots to the top). Per-metre: 100 mm HDPE watermain ~$1,600–2,500/m installed (QLDC/Opus Ladies Mile DBC estimate) ⚠ CORRECTED (mis-attribution, retained-not-deleted): the QLDC/Opus Ladies Mile DBC has been retrieved and read verbatim as [[ot_113_ladies-mile-dbc-civil-rates-2018|OT_113]] — this $1,600–2,500/m is that estimate's 1050 mm RCRRJ STORMWATER pipe rate (Opus $1,600 / WTP $2,500), NOT a watermain; there is NO 100 mm watermain in it (smallest pressure watermain DN315), and the verified watermain supply+weld+lay rate is $200–350/m (DN315–355 PE100 PN12.5), all-in ~$600–800/m. The right-document-wrong-line failure mode; the $1,600–2,500/m reading above is kept as-recorded and annotated. Rural PE 25–50 mm ~$3–8/m material, ~$30–80/m installed. Scheme-level NZ points: Watercare IGC (from Jul 2026) $29,348/connection water+wastewater combined → water-only ~$14,000–15,000 (DERIVED by the synthesis, wastewater≈half, not published); Waipā DC rural connection fee $1,172 / urban $1,793; Far North reticulation upgrade ~$330,000 (~$5,000–15,000/dwelling); national assessment: NZ reticulation networks ~$23bn replacement value → ~$3,300–5,000/connection for reticulation alone (DERIVED from the paper's $23bn). CONFIDENCE: Medium."
  source_location: "§3; Watercare/PropertyNZ [^22]; Waipā DC [^23]; NZ Herald/CIP [^24, weak]; QLDC Ladies Mile DBC [^25]; Iplex [^26]; tandfonline national assessment 10.1080/13241583.2025.2481694 [^27]"
- claim: "GREYWATER REUSE INSTALLED COST (RT_314; brackets the engine interim greywater_capex_per_dwelling $4,000). NZ Building Code G13 requires a building consent for any in-home greywater collection/reuse; kitchen wastewater excluded. Manual laundry-to-garden diverter $500–1,500 (garden irrigation only, lowest regulatory burden); pumped GWDD (GreyFlow EZGrey standard) ~$1,800–2,800 = unit $1,281 excl GST (WCTNZ) + plumber install — the SAME WCTNZ figure ingested via CR_048; Aqua2Use GWDD ~$1,750–3,000; full treated greywater system (biofilter + UV, in-house reuse for toilet/laundry) $8,000–18,000 installed (≈ AWTS complexity; discharge resource consent may apply). CONFIDENCE: diverter costs High (NZ supplier pricing confirmed); treated-system costs Medium (no NZ treated-greywater install quote found — extrapolated from AWTS + Australian BioCycle data). The engine's interim $4,000 sits at the diverter-installed end, NOT the treated-reuse end."
  source_location: "§4; building.govt.nz G13 [^28]; rainreserve [^29]; WCTNZ [^30]; Environment Technology FB [^31, weak]; BioCycle AU [^16][^32]"

Neobiome Intelligence relevance

The single densest cost reference for the D03 water domain and the AF-17 replacement reserve — but AI-compiled and medium, so it advances four gaps without closing any. Its value is (a) recording the planning bands + confidence, and (b) naming six Tier-1 primaries (RT_316–321) whose retrieval + grep-verification is what actually firms the cells.

  • RT_310 (stream intake/treatment) — gives the inert stream_abstraction lever its first cost band (~2–8k/m³·day treatment; ~15–35k consent). Primaries: FILTEC programme (RT_321), MfE CBA (RT_320), plus the existing RT_296 fee schedules. → Extended to the full surface-water scheme stack by CR_053 (2026-07-17, Perplexity Deep Research, RT_310 resolved-with-residual): CR_050’s treatment-only 2–8k/m³·day is corroborated (the newer synthesis's ~5–8k/m³·day sits in-band) and now sits inside a full intake+pump+treatment+consent stack (75–300k CapEx / ~10–35k/yr OpEx, 20–100 HH). Both are medium; the intake+treatment CapEx remain engineering estimates awaiting the same FILTEC quote (RT_321).
  • RT_312 (asset lives) — supplies the params.ASSET_LIFE reserve schedule (all assumed): DH mains 40 ✓ mid-range (EN 253 floor 30), wastewater 25 ✓ conservative (concrete 30–40+), but flags rainwater 30 as optimistic if poly tanks (10–20 yr) dominate, and dhw 15 = top of the electric range. Tier-1 primaries: EN 253/Energiforsk (RT_318), Waimate AMP (RT_319); tank/DHW lives stay Tier-3 → RT_312 stays open for an IPWEA/NAMS or BRANZ component-life table — the BRANZ half now in-corpus as OT_158 (SR351), advancing the fabric lines (office 60 yr; roofing 22 [20–25] yr; concrete 100 yr) but office-fabric-scoped, so the services lives (DHW/AWTS/tanks/DH-mains/V2H) stay open.
  • RT_313 (water reticulation) — the highest-value new firming: closes the AF-16 gap (water distribution was uncosted / the costed line is electrical). Gives a per-dwelling band (5–20k), a /m main (1,600–2,500), and a /connection proxy ($3,300–5,000). Primaries: tandfonline national assessment (RT_316), QLDC Ladies Mile DBC (RT_317).
  • RT_314 (greywater) — corroborates CR_048’s WCTNZ diverter figure and adds the treated-system upper band (8–18k); the engine's interim 4,000 is diverter-class, not treated. Mostly a cross-check; no new primary needed beyond WCTNZ (already in corpus).

See D03, greywater_recycling, biomass_district_heating.

Retrieval provenance

AI-compiled synthesis prepared for the NEOBIOME project (July 2026; exact tool unconfirmed), 32 web references with explicit per-section confidence ratings. Values AI-extracted and unverified until spot-checked against the named primaries. No figure hardens a model cell until its Tier-1 primary (RT_316–321) is retrieved and verified against the document — the CR_045 → OT_090 pattern.

Research targets

Documents to retrieve

  • RT_316 — tandfonline National assessment of NZ drinking-water infrastructure (10.1080/13241583.2025.2481694): verify the ~23bn reticulation network value (the 3,300–5,000/connection is a synthesis derivation). → RT_313 · RESOLVED → LIT_074 (retrieved + read verbatim, 2026-07-18): the ~NZ23bn IS in the paper (Introduction, p.35, verbatim) so this synthesis's attribution is CORRECT — but the figure is a REPEATED PRIOR estimate derived NZ85bn × 27% (primaries WICS 2021 + Water NZ 2022), which the paper argues is likely a substantial underestimate; and the ~3,300–5,000/connection is CONFIRMED ABSENT from the paper (this synthesis's own derivation, still unverified — the paper reports population served, not connections). Read the recorded 23bn as a soft national top-down floor, not a firm per-connection cost.
  • RT_317 — QLDC Ladies Mile HIF DBC cost estimate (Opus P50): 100 mm HDPE watermain /m installed. → RT_313 · **RESOLVED → [[ot_113_ladies-mile-dbc-civil-rates-2018|OT_113]]** (retrieved + read verbatim; the "1,600–2,500/m watermain” proved a mis-attribution of the 1050 mm RCRRJ stormwater rate — see the ⚠ correction on the reticulation claim above; real watermain $200–350/m).
  • RT_318 — EN 253:2019 min DH-pipe design life (via Chalmers pub 520167) + Energiforsk 2022:872 field study: DH-main service life. → RT_312 (district_heat)
  • RT_319 — Waimate DC Wastewater Asset Management Plan: 80-yr concrete-septic base life. → RT_312 (wastewater)
  • RT_320 — MfE NES-DW marae & rural water-supply CBA case studies: non-notified consent applicant cost $10–30k. → RT_310
  • RT_321 — FILTEC CIP-funded rural modular treatment programme (~270k/plant): small surface-water treatment capex. → RT_310 · **RETRIEVED → [[url_027_filtec-rural-drinking-water-partnership|URL_027]] (advanced, kept OPEN): the FILTEC programme page confirms ≈120 plants / 25–100 m³ modular scale but is UNPRICED — the ">27M / ~270k/plant" is NOT on the vendor page, even though this §1 sources the bracket to it ([^1]). Treatment-capex residual stays open; needs a real supplier quote; the 27M’s true origin is unestablished.**

Research gaps

  • RT_310/312/313/314 stay open (synthesis delivered the bands; primaries pending). RT_312 additionally needs an IPWEA/NAMS or BRANZ component-life table for the rainwater-tank and HW-cylinder lives (CR_050’s are Tier-3 trade blogs).

Connections

Links to

Sources (5): CR_053 · LIT_074 · OT_113 · OT_158 · URL_027

Technologies (2): Biomass District Heating (Wood Chip) · Greywater Recycling

EDT domains (1): D03: Water, Waste & Circular Systems

Referenced by

Sources (10): CR_053 · LIT_062 · LIT_074 · OT_110 · OT_113 · OT_158 · REG_025 · URL_027 · URL_041 · URL_042

Technologies (2): Biomass District Heating (Wood Chip) · Greywater Recycling

EDT domains (1): D03: Water, Waste & Circular Systems

Graph View

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