{"uid":"cap_k4fUp_SO-cBf1JqH0yPIa","slug":"locus-pfas-occurrence-lookup-cd3f5fae","name":"Locus PFAS Occurrence Lookup","description":"EPA UCMR 5 PFAS results for an address or explicit PWSIDs. Perfect for: 'PFAS results for this address', 'was this utility tested for PFAS'. Addresses resolve via EPA service-area boundaries (point-in-polygon) with per-boundary provenance and confidence (provider vs machine-modeled); containment is evidence, not proof. Detection and non-detect counts stay distinct; lithium excluded. Entry-point samples, not a tap; no safe/unsafe verdict. Charge-free when out of coverage or unresolved.","url":"https://locus.report/api/locus-pfas-occurrence?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"pwsids":{"type":"array","items":{"type":"string","pattern":"^[A-Z0-9]{4,24}$"},"maxItems":10,"minItems":1},"address":{"type":"string","maxLength":200,"minLength":5},"latitude":{"type":"number","maximum":90,"minimum":-90},"longitude":{"type":"number","maximum":180,"minimum":-180}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_EK4ZYZMLo3aDzVBBO-ByH","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns EPA UCMR 5 PFAS testing results for a US address or public water system IDs, including detection and non-detect counts with service-area provenance and confidence scores.","exampleAgentPrompt":"Can you pull the EPA UCMR 5 PFAS test results for 123 Main Street, Newark, NJ 07102 — I want to know what was detected and how confident the system is that this address maps to the right water utility?","exampleUseCases":[{"title":"Home buyer water quality check","prompt":"I'm looking at buying a house at 456 Elm Street, Columbus, OH 43215 — can you look up the PFAS results from EPA's UCMR 5 testing for the water system serving that address and tell me what was detected?"},{"title":"Utility-specific PFAS compliance review","prompt":"I need to review the PFAS occurrence data for public water systems OH3060001 and OH3060002 — can you pull their UCMR 5 results showing what PFAS were detected versus not detected?"},{"title":"Environmental due diligence for commercial site","prompt":"We're doing environmental due diligence on a property at 789 Industrial Blvd, Detroit, MI 48201 — please fetch the EPA PFAS drinking water test results for that address so we can include it in the site report."}],"resultDescription":"Returns PFAS occurrence data from EPA UCMR 5, including counts of detected and non-detected PFAS compounds, matched public water system IDs, service-area boundary provenance (provider-supplied vs. machine-modeled), and a confidence score for the address-to-utility match. Entry-point (source) sample data only — no tap-level or safe/unsafe verdict. No charge if the address is out of coverage or cannot be resolved.","failureModes":["Address cannot be resolved to a service area boundary — no charge, returns out-of-coverage response","Invalid PWSID format or unknown PWSID — returns error or empty result","Address is outside the US or in a jurisdiction without UCMR 5 coverage","Ambiguous address that matches multiple service area boundaries — returns multiple candidates with varying confidence","No PFAS results available for the matched utility if it was not required to test under UCMR 5"],"whenToPreferThis":"Use this endpoint when you need EPA UCMR 5 PFAS occurrence data tied to a specific US address or known public water system IDs. It is ideal for real estate due diligence, environmental site assessments, or consumer water-quality questions. Prefer it over general water quality APIs when you specifically need PFAS detection/non-detect counts with service-area provenance and confidence scoring. Note: it reports entry-point (treatment plant) samples, not tap water, and returns factual occurrence data without a safe/unsafe interpretation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-13T18:32:50.192Z","isFirstParty":false,"canonicalSlug":"locus-pfas-occurrence-lookup-cd3f5fae"}