SOURCE F1 | EPA Region 5, final report dated October 21, 2015, transmitted in memorandum dated November 4, 2015; publicly posted November 6, 2015 (publication evidence in SOURCES.csv). Excerpts below reproduce the publicly redacted EPA report. Redaction bars and surrounding household-identifying passages are omitted; original page numbers are the report's printed page numbers, not PDF page numbers. No interim June memo is included.
URL: https://www.epa.gov/sites/default/files/2015-11/documents/transmittal_of_final_redacted_report_to_mdeq.pdf

Memorandum, PDF page 1:
"Enclosed please find for your file a final redacted version of a report prepared by EPA Scientist, Miguel Del Toral, regarding lead in drinking water at three residences in Flint, Michigan. The redactions remove personally identifiable and medical information."
"We understand you saw an earlier version of this document, and note that most of the recommendations in that interim report are already being implemented (e.g., the City of Flint has switched back to Detroit water; filters have been provided to residents; and additional corrosion control treatment will be implemented)."
"The final report contains important new information indicating that physical disturbances of lead service lines can dislodge the protective coating that prevents lead from leaching into drinking water. The final report recommends notifying residents about the potential risks of increased lead levels in drinking water when work is undertaken that may disturb lead service lines."

Final report, printed page 1, Background Information:
"Prior to April 30, 2014, the City of Flint purchased water from the City of Detroit. On April 30, 2014, the City of Flint switched from utilizing purchased water from Detroit to a new water source, the Flint River."

Final report, printed page 11, Appendix B, Analytical Results, City of Flint Samples. The three dated sample rows are verbatim; household-identifying material before and after the rows is omitted:
"February 18, 2015: 104 µg/L"
"March 3, 2015: 397 µg/L"
"April 2, 2015: 707 µg/L*"

Final report, printed page 5, sequential sampling; omission separates independent sentences:
"At the first home (Site 2), a series of 15 sequential one-liter samples were collected and the results are indicative of a service line that does not contain any portion that is made of lead."
"At the second home (Site 3), a series of 15 sequential one-liter samples were collected from the kitchen tap and the results indicated that there were no significant sources of lead within the home plumbing but that a portion of the service line is likely made of lead, as indicated by the characteristic peaking of lead levels in the liters capturing water from the service line between the property and the water main, where the portions of many service lines in Flint are made of lead."
"The corrosiveness of the water and the absence of mitigative treatment to control lead release are well known factors that can contribute to high lead release."

Final report, printed page 6, Physical disturbances and Recommendations; household-identifying parts omitted:
"A recent EPA study indicates that physical disturbances in proximity to lead service lines can cause the dislodging of the protective scales from within the service lines."
"Consequently, even with corrosion control treatment in place in the future, physical disturbances will be capable of dislodging the high lead-bearing scale and sediment from non-lead pipes as well as lead pipes, as was the case in the earlier EPA study."

Final report, printed page 7, Recommendations:
"Sequential sampling should also be conducted on a representative group of homes with common plumbing materials (e.g., galvanized iron, copper, plastic) to determine the extent to which the lead from the service line has seeded the interior plumbing in homes."
"The training and educational material should be assessed for clarity, meaningfulness, and accessibility by a group of residents and health experts to ensure the effectiveness of the communications."
"Residents should be notified of scheduled work by water and non-water utilities and informed of the potential risk of increased lead levels due to these disturbances."

Privacy boundary: printed page 8 of the source expressly redacts its map because it shows personally identifiable information. The full linked report also contains residual street-level clues near individual homes. Do not reproduce any street name or household location in a public output. These excerpts intentionally omit them.
