Delaware Code Title 25. Property § 5409. Anti-discrimination provision

(a) It is unlawful to discriminate against an individual because the individual has made a complaint, testified, assisted, or participated in any manner in an investigation, proceeding, or hearing relating to the presence of a lead-based paint hazard in a rental unit or premises, or the failure to register the rental unit or to obtain or provide a certificate.

(b) It is unlawful to discriminate against an individual because the individual or someone residing with the individual in a rental unit has an elevated blood lead level or is perceived as having an elevated blood lead level.  It is also unlawful to discriminate against an individual seeking to rent a rental unit because the individual or someone who would be residing in the rental unit has an elevated blood lead level or is perceived as having an elevated blood lead level.

(c) A violation of this section is considered a discriminatory housing practice under Chapter 46 of Title 6.