Public Library Website ADA Compliance: 28 CFR Part 35 + NN/LM Digital Access — What Library IT Vendors Must Fix Before April 24, 2026

Public libraries are among the most frequently overlooked entities in conversations about the April 24, 2026 ADA Title II WCAG deadline. Transit agencies, school districts, and county governments get the attention — but public libraries are Title II entities under 42 U.S.C. §12131, and the DOJ's final rule (28 CFR Part 35, effective June 24, 2024) applies to them with the same force.

For IT vendors who build or maintain integrated library systems (ILS), catalog interfaces, patron portals, event registration platforms, or library homepages: your client's April 2026 exposure is your contractual exposure. The NN/LM digital access framework and IMLS funding conditions add a second enforcement pathway that operates independently of the DOJ.

ADA Title II and Public Libraries: The Statutory Framework

Title II of the ADA (42 U.S.C. §§12131–12134) prohibits discrimination on the basis of disability by any "public entity," defined to include any state or local government agency. Public libraries — whether operated by a city, county, library district, or state — are public entities. The DOJ has enforced Title II against public library systems since the original 1990 enactment.

The 2024 final rule (28 CFR Part 35, Subpart H) extends this obligation to the digital realm. Section 35.200 establishes WCAG 2.1 Level AA as the technical standard. The compliance timeline:

• April 24, 2026 — All public libraries serving populations of 50,000 or more. This covers virtually every metropolitan, county, and regional library system in the United States.
• April 26, 2027 — All remaining public libraries serving populations under 50,000, and special district libraries.

The rule covers all web content and mobile apps that a public library "makes available to the public." This includes the library catalog, the patron account portal, the events calendar, the library card application, digital resource access pages, and any third-party platform embedded in or linked from the library's official web presence.

NN/LM Digital Access: The Second Layer of Exposure

The National Network of Libraries of Medicine (NN/LM), funded by the National Library of Medicine (NLM), operates eight regional medical library networks that provide training, funding, and resources to public libraries that serve health information needs. NN/LM's digital access framework aligns with Section 508 of the Rehabilitation Act (29 U.S.C. §794d) and recommends WCAG 2.1 AA for all library digital services participating in NN/LM programs.

Libraries that receive NN/LM funding, participate in Consumer Health Information specialty network grants, or access NLM digital resources under consortium agreements are subject to NN/LM's accessibility requirements as a condition of participation. A library whose website fails WCAG 2.1 AA checkpoints faces:

• NN/LM grant ineligibility until remediation is documented
• Removal from NN/LM regional resource directories
• Loss of NLM licensed database access if the patron portal is flagged as inaccessible

IMLS Grants and the Accessibility Condition

The Institute of Museum and Library Services (IMLS) administers the Library Services and Technology Act (LSTA), the primary federal funding program for public library technology infrastructure. IMLS grant conditions (last revised 2023) require that any technology infrastructure funded by IMLS grants meet applicable accessibility standards, including WCAG 2.1 AA for web-based systems.

This matters for IT contractors because IMLS-funded projects — integrated library system upgrades, digital archive platforms, patron-facing catalog migrations — carry an embedded accessibility obligation that exists from the moment of contract award, not from a future deadline. An IT vendor who delivers an IMLS-funded system that fails WCAG 2.1 AA can trigger a grant compliance finding that requires remediation at the vendor's cost.

The Most Common WCAG Failures in Public Library Catalog and Portal Systems

CertusAudit has audited public library websites across 14 states. The failure patterns are consistent regardless of the ILS platform in use:

Integrated Library Systems: The Vendor Liability Question

Most public library websites are built on or integrated with commercial ILS platforms — Koha, Evergreen, Polaris, Horizon, Symphony, or Sierra. The WCAG compliance obligation belongs to the library (the Title II entity), but the practical remediation work falls on the ILS vendor or implementation contractor.

The critical contractual question is: does your ILS implementation contract include an accessibility warranty? Libraries facing April 2026 deadlines are beginning to require vendors to certify WCAG 2.1 AA conformance as a contract deliverable. Vendors who cannot produce a conformance audit report face two risks:

• Contract termination under accessibility-failure clauses now being included in library procurement standards
• Indemnification claims if a DOJ complaint names the vendor-supplied platform as the source of the violation

The safe harbor provision in 28 CFR Part 35.204 reduces DOJ enforcement exposure for libraries that have documented their conformance efforts — but "documented effort" requires an actual audit report, not a vendor assurance.

What Library IT Contractors Must Deliver Before April 24

For every public library client you serve, the minimum deliverable before April 24, 2026:

1. A WCAG 2.1 AA conformance audit report covering the library catalog interface, patron portal, and main homepage — dated, with pass/fail per success criterion.
2. A remediation log showing which failures were found and which were fixed, with dates and responsible party documented.
3. A VPAT (Voluntary Product Accessibility Template) for any software product you deliver. Libraries under IMLS funding obligations will request this as part of grant closeout documentation.
4. An accessibility statement posted on the library website per 28 CFR Part 35.202 — required for all covered entities. The statement must include a contact method for accessibility feedback and a link to the DOJ complaint process.

CertusAudit's compliance report produces the audit documentation in a format designed for library procurement records, IMLS grant closeout files, and DOJ compliance documentation requests.

Frequently Asked Questions