Alegria Approved Septic Systems Comparison Table

SystemTypeInstallation Cost Estimate (USD)Maintenance Cost Estimate(USD/year)Maintenance Cost Estimate(USD/month)Power RequirementSpace RequiredReuse PossibleMaintenance Requirements
BionestMDIndividual WWTP (biological reactor)$6100–7800$125–YesModerateYesAnnual expert visit; powered system with biological media; inspect all components.
TSM AA (Fibromuebles)Improved Septic + Aeration$3600–7800$80–YesModerateYesAnnual expert visit; low sludge; requires pump and blower; simple operation.
Eloy OXYPLANTA®Aerobic WWTP with 3–4 tanks$6000–6400$150 + parts–YesHighYesAnnual expert visit; multi-tank aerobic system; needs space and component checks.
Norweko (Eco Sistemas Sanitarios)Compact Reinforced Concrete WWTP$7000$150–YesLowYesAnnual expert visit; compact system; blower included in tank; quiet operation.
Composting LatrinesDry Composting Toilet$850–1350–$40NoLowYes (with treatment)Monthly sawdust input; yearly manual compost removal; occasional inspection.
Waterless Urine DiversionUDDT (Urine-diverting dry toilet)$1600–2100–$40NoLowYes (urine fertilizer)Daily/weekly dry carbon addition; yearly chamber rotation and compost removal.
Constructed WetlandsNatural Greywater Treatment$1500–2000––NoHighYes (irrigation)Monthly and semi-annual plant maintenance; weekly pretreatment cleaning; 10–15 year filter media.

Written by neighbors in the community guide. Last edited May 18, 2025.Open in Notion