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Knowledge Hub

Cited regulatory answers, grounded in your project — for your team and your clients.

Answers you can cite

Ask a question in plain language and receive an answer with its source cited — never a bare claim of compliance. Because the Hub is aware of your specific project, the guidance addresses your readings rather than generic boilerplate.

Professionals reviewing regulatory guidance

Grounded in the rules that matter

The Knowledge Hub is grounded in EPA RRP, HUD Lead Safe Housing, and Michigan EGLE & MDHHS requirements. Every answer returns the source it came from, so you can verify and defend it.

  • Cited to EPA, HUD & Michigan EGLE
  • Context-aware — tied to your project facts
  • Guidance to review with a certified professional — never a legal guarantee
Homeowners outside their home

For staff, contractors and homeowners

Inspectors get project-specific guidance. Contractors get thresholds and work practices. Homeowners get plain-English answers about lead and home safety — free, with no account required to ask a question.

New to lead? Start with the basics — what lead is, what your report means, and how to stay safe.

Common topics

What you can ask the Hub

Thresholds & work practices

The action levels that decide a hazard — the EPA 5 µg/ft² dust floor, the soil and water limits, and the HUD-grantee thresholds — and the work practices that follow from each.

Ask a compliance question

Type a question in plain language and get an answer with the rule it is based on. No account is needed to ask a first question.

EPA RRP guidance

How the federal Renovation, Repair & Painting rule applies to pre-1978 homes — the required lead-safe work practices, and when they apply to your job. Cited to EPA.

Plain-English lead answers

Regulatory answers written for people, not lawyers — so homeowners and residents can understand what actually applies to them.

Home & family safety

Practical, cited guidance on protecting children and residents from lead paint and dust in older homes.

Understand your results

What your XRF and lab numbers mean — which readings matter, and what a hazard finding means for your property.

Guidance is informational and cited to its source — always review with a certified professional. It is never a legal determination of compliance.

Ask the Knowledge Hub

See how cited, project-aware answers help your team stay compliant.