cyber-valley/policies/water policy.md

water sovereignty requires clean infrastructure at every stage — from collection through distribution to discharge.

pipe materials

all water supply pipes within cyberia territory use PPR (polypropylene random copolymer):

food-grade PP-R80 or PP-R100 rated at PN16 minimum

no PVC, no galvanized steel, no lead solder in potable lines

reason: PPR contains no plasticizers, no heavy metals, no BPA — safe across the full temperature range for both cold and solar-heated supply

fittings: butt-fusion or electrofusion welded only — no glued slip joints in buried or concealed lines

collection standards

rainwater collection surfaces: food-grade coatings or stainless steel only — no asphalt-based or zinc-treated roofing in collection zones

first-flush diverters required on every roof catchment: minimum 1 L per 10 m² of collection area, auto-resetting

storage tanks: food-grade polyethylene or ferrocement with lime render interior — no fiberglass with styrene binders

covered storage: no open reservoirs in residential or food-production zones

greywater and blackwater

greywater (sinks, showers, laundry): on-site treatment before soil discharge — constructed wetland, living machine, or trickling filter to BOD < 30 mg/L

blackwater (toilets): closed composting system or biodigester — no direct discharge to soil or waterways

separation at source: greywater and blackwater lines plumbed independently from first fixture

discharge quality

effluent leaving any building or processing zone:

parameter limit
BOD < 30 mg/L
TSS < 50 mg/L
pH 6.5 – 8.5
nitrate < 10 mg/L
phosphate < 1 mg/L
coliforms < 200 CFU / 100 mL

monitoring: quarterly sampling at designated discharge points, results published to cyberia ledger

irrigation

drip irrigation preferred over sprinkler for food zones: 50% water reduction, zero foliar contamination

no agricultural-grade chemical fertilizers dissolved in irrigation lines

aquaponics effluent qualifies as irrigation source when fish density stays below 20 kg/m³

springs and surface water

15 m buffer zone around all springs — no construction, no chemical inputs, no tillage

surface water (streams, ponds): no discharge of soapy water, no vehicle washing within 30 m of banks

aquifer recharge zones (high infiltration andosol slopes): no soil sealing, no compaction by heavy machinery

see also

zoning system, energy and water system, carbon policy

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