Houston Health Department

Fifth Ward/Kashmere Gardens Union Pacific Railroad Site Contamination and Area Cancer Cluster


Historical operations at the Union Pacific Railroad site at 4910 Liberty Road resulted in soil and groundwater contamination. The Texas Commission on Environmental Quality reviews, approves, and conducts oversight of investigations and cleanup at the site.

In April 2019, the community group, IMPACT, expressed concerns about the health impact of living in proximity to the contamination.

In November 2019, the Houston Health Department learned that an analysis conducted by the Texas Department of Health and Human Services found elevated counts of cancers known to be associated with the kinds of chemicals of concern found at the UPRR site.

Although the site is the jurisdiction of the Texas Commission on Environmental Quality and not the Houston Health Department, the health department is taking steps to fill in gaps to address community concerns.


Timeline of Houston Health Department and supporting city departments actions since April 2019

  • April 24, 2019: Representatives from the Houston Health Department, Union Pacific Railroad (UPRR), and Texas Commission on Environmental Quality (TCEQ) participated in a panel discussion at a community meeting where residents voiced environmental health concerns related to creosote at the UPRR wood treatment facility. Residents asked TCEQ to request a cancer cluster analysis from the Texas Department of State Health Services (DSHS).
  • July 29, 2019: The City of Houston tested drinking water at three locations near the UPRR site. Results showed the water is safe and unaffected by the contamination.
    (Drinking water sample analysis and location)
  • Oct. 3, 2019: A city of Houston contractor tested underground storm sewer locations near the UPRR site. Results found volatile and semi-volatile organics in the storm sewer, in addition to indications of dense non-aqueous phase liquids.
    (Storm sewer sample analysis and location)
  • Nov. 5, 2019: The Houston Health Department requested and received a list of chemicals of concern (COCs) found at the UPRR site from TCEQ. The health department compiled a list of health effects associated with the COCs based on EPA sources.
    (Creosote and chemicals of concern information page)
    (UPPR Houston wood briefing chemicals of concern list)
  • Nov. 8, 2019: The Houston Health Department tested surface water at two locations to determine if any contamination from the COCs were present at levels that would adversely affect the community. No chemicals were detected in the surface water.
    (Surface water sample analysis and location)
  • Nov. 14 - 15, 2019: The Houston Health Department reached out to DSHS to request a cancer cluster analysis. DSHS informed the health department that an analysis was completed on August 13, 2019 at the request of TCEQ.
    (Assessment of the occurrence of cancer Houston 2000-2006 report)
  • Nov. 15, 2019: The Houston Health Department met with IMPACT and Texas Housers to plan a community health survey to better understand the environmental health needs of the community surrounding the UPRR site.
  • Nov. 20, 2019: The Houston Health Department Chief Environmental Science Officer, Dr. Loren Hopkins, met with IMPACT, Texas Housers, and Lone Star Legal Aid to discuss the health department’s knowledge of the cancer cluster. The health department also informed attendees of the health department’s request to DSHS for an additional cluster analysis for each individual census tract. The health department also committed to working with IMPACT on a door-to-door health survey.
  • Jan. 4, 2020: The Houston Health Department and IMPACT conducted a community survey of the 110 properties located over the contamination. The data assisted the health department to better understand the health needs in the area.
    (Impact: Greater Fifth Ward)
  • Jan. 17, 2020: DSHS completed the health department’s request for additional cancer cluster analysis. The report “Assessment of the Occurrence of Cancer Houston, Texas 2000-2016” provides cancer occurrence information based on each census tract that was studied.
    (DSHS assessment of the occurrence of cancer Houston report)
  • Feb. 13, 2020: The Houston Health Department Chief Environmental Science Officer, Dr. Loren Hopkins, requested DSHS perform additional cancer cluster analysis of additional census tracts to the north and west of the previous tracts to determine if there is a physical boundary of the elevated cancer cases. A response from DSHS is pending.
  • Feb. 14, 2020: The Houston Health Department created a map of the cancer cluster’s geographical location. The figure emphasizes the census tracts that were analyzed for specific types of cancer and the map details which cancers were assessed in the notes section. A list of census tracts that were observed to have no statistically significant occurrence of cancer is also detailed in the notes section.
    (Map of the cancer cluster's geographical location)
  • Feb. 18, 2020: The Houston Health Department and community members placed door hangers and bags of information, including the health survey, at properties located within a 1/3-mile radius of the UPRR site. The properties were also visually assessed for possible action by the health department’s lead-based paint programs. The survey was scheduled to be completed by the end of March, but the completion has been postponed due to Covid-19.
  • Feb. 29, 2020: The Houston Health Department hosted a community health and wellness fair at the Fifth Ward Multi-Service Center. Residents were provided health services, guided to resources, and offered the opportunity to complete the health survey.
  • March 10, 2020: Houston Public Works gave Notice to Proceed to conduct a CCTV survey of the City’s storm sewers in the vicinity of the UPRR facility. This investigation was motivated by the results of the October 3, 2019 storm sewer sampling results. The CCTV survey will provide City officials with information regarding the integrity of the City’s sewer system. 
  • March 10-12, 2020:  The Houston Health Department went to homes of residents who completed and submitted a health survey and responded “yes” to the occurrence of cancer in their household. This information will be analyzed, with the previously collected information from the January 4, 2020 survey, to develop a detailed account of the health needs of the area.
  • May 15, 2020: The DSHS issued to the Houston Health Department the updated report “Assessment of the Occurrence of Cancer Houston, Texas 2000-2016” detailing the prevalence of cancer in each census tract studied. This report was finalized by DSHS on March 20,2020 and differs from the cancer cluster analysis received on January 17, 2020 in that it studies a larger geographical region encompassing more census tracks.
    (Assessment of the Occurrence of Cancer, Houston, Texas - 2000 - 2016)
  • May 18, 2020: The Houston Health Department created a map plotting the geographical locations of the data from the DSHS March 20, 2020 cancer cluster analysis. The figure emphasizes the census tracts that were analyzed for specific types of cancer and the map details which cancers were assessed in the notes section. A list of census tracts that were observed to have no statistically significant occurrence of cancer is also detailed in the notes section.  
    (Cancer cluster map)