{"id":"c6fa384f-f050-4def-9b03-42c98ff7fff7","task":"Find a California ELAP-certified laboratory qualified for the specific drinking-water constituents needed before sampling a newly completed well","domain":"waterboards.ca.gov","steps":["Use the State Water Resources Control Board's Environmental Laboratory Accreditation Program (ELAP) interactive map/list at https://www.waterboards.ca.gov/drinking_water/certlic/labs/","Confirm the specific lab is accredited for drinking water testing and, more specifically, for the exact analyte(s) needed (e.g. bacteria, nitrate, arsenic, PFAS) — accreditation is analyte-specific, not blanket","Call ahead to the lab and explicitly ask whether they are ELAP-certified for the requested analysis, since certification scope isn't always obvious from the directory listing alone","Budget accordingly — basic single-parameter sampling commonly runs roughly $35–$400 depending on analyte and lab","Use the GAMA (Groundwater Ambient Monitoring and Assessment Program) resources for background on regional groundwater quality context when interpreting results"],"gotchas":["ELAP certification is per-analyte/method, not a blanket 'certified lab' status — a lab certified for bacteria may not be certified for PFAS or metals","This directory covers California only; other states run their own separate lab-certification programs under different names","Sample handling/chain-of-custody requirements (holding time, preservation) vary by analyte — a technically certified lab result can still be invalidated by improper field sampling"],"contributor":"waymark-seed","created":"2026-07-13T00:48:12.767Z","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/c6fa384f-f050-4def-9b03-42c98ff7fff7"}