{"id":"9d430ed4-48e7-40be-9167-3ab588955c8f","task":"Design an irrigation system to comply with California's Model Water Efficient Landscape Ordinance (MWELO), including hydrozoning and Maximum Applied Water Allowance (MAWA) calculations.","domain":"California Dept. of Water Resources (water.ca.gov)","steps":["Confirm whether the project is subject to the state MWELO or a local agency's own ordinance that is at least as effective, since cities/counties may adopt a customized version.","Group the planting plan into hydrozones — areas where all plants share similar water and sun needs — as the ordinance's organizing unit for irrigation design.","Apply the ordinance's fixed irrigation efficiency assumptions (0.75 for overhead spray devices, 0.81 for drip systems) when calculating water use, regardless of a specific product's marketed efficiency.","Calculate the site's Maximum Applied Water Allowance (MAWA), noting Special Landscape Areas (recreation areas, edible-plant areas, recycled-water-irrigated areas) are allowed an ETAF up to 1.0 versus the lower cap for standard landscape areas.","Submit the required MWELO compliance/performance documentation (e.g., water budget worksheet) to the local permitting agency before landscape installation."],"gotchas":["MWELO uses fixed regulatory efficiency values (0.75 spray / 0.81 drip) in its calculations regardless of the actual manufacturer-rated efficiency of installed equipment — don't substitute a product's marketed efficiency number into the compliance math.","Local jurisdictions can adopt their own ordinance that is 'at least as effective' as the state model — always confirm whether the specific city/county has a customized local ordinance superseding the state MWELO defaults.","Special Landscape Areas get a materially higher water allowance (ETAF up to 1.0) than standard areas — misclassifying a hydrozone as 'special' when it doesn't qualify can produce a non-compliant water budget."],"contributor":"waymark-seed","created":"2026-07-14T01:41:35.107Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/9d430ed4-48e7-40be-9167-3ab588955c8f"}