From Red Lines to Toxic Sites: The Legacy of Discriminatory Housing in Newark’s Ironbound

Introduction

An early morning in Newark’ s Ironbound, a middle schooler steps onto the sidewalk after leaving her home on Ferry St. As she walks, the growling diesel trucks ride past her and leave behind thick clouds of black smoke. Her face twists with disgust as the smoke mixes with the stench of the nearby river, and garbage piles on the sidewalk. She speeds up, and lets out a wheezing cough as she passes by factories that are releasing clouds of chemicals into the environment. With every breath she takes she can feel her lungs burn slightly, and quickly whips out the inhaler in her front bag pocket. She fumbles with the cap for a second before finally getting it open, and shaking it. Before she pulls the inhaler to her mouth, she exhales any oxygen left in her lungs, and takes a deep inhale of her medication…Finally, she can breathe again. 

As she continues her route, her ears ring with the noise of the city. Truck horns bellowing, brakes screeching, and metal clanging. Turning what is supposed to be a typical walk to school, into a daily fight with pollution. 

For the children growing up in the Ironbound, environmental injustice is not an abstract concept, but actually something they see, hear, and breathe in every morning before they even open a textbook.1

For decades the residents of this community have lived with toxic air, contaminated soil, and the consequences of chemicals being dumped into the river that turned parts of the neighborhood into what we could call today a sacrifice zone2. These conditions have not simply been the product of the industrial growth the city had, but also the result of policies that intentionallyplaced environmental hazards in places where working-class immigrants and people of color were confined to.

To be able to understand how the Ironbound became what we see today, we need to  understand the political history that allowed factories to be placed along the site: Wilson Avenue, Ferry Street, and the surrounding blocks. In the 1930s, federal redlining maps categorized different areas in a city based on their investment risk level3. The areas labeled as hazardous were denied loans and mortgages. The categorizations were according to the area’s demographics. The poor, and minority communities would be named hazardous, as a way to segregate cities.  This same process forced the residents of the Ironbound to stay in a neighborhood that was already being negatively impacted by industrialization, and pollution. By the 1960s, the Ironbound was considered the industrial section of Newark4 and truck routes were expanded, new highways were built, and the land along the river kept being polluted with toxic chemicals. These circumstances resulted in pollution and segregation that was meant to keep them in harmful living conditions. 

Newark’s Ironbound did not become one of the most polluted neighborhoods in New Jersey by accident. This paper will question how housing policies and industrial zoning decisions worked together to shape the environmental conditions of the Ironbound, and how this history shows the connection between racial segregation and environmental inequality in the US. I will argue that redlining and industrial zoning deliberately concentrated pollution in Newark’s Ironbound and trapped minority communities in a place and exposed them to dangerous conditions, where they have limited political power.

This paper will examine the neighborhood’s redlined districts, industrial zoning, and riverfront development. Using the racial, economic, and environmental data from the site, this paper plans to prove how these historical decisions still shape the health and wellbeing of the Ironbound community today.

Historical Background: Redlining and Industrial Zoning

Redlining in Newark

During the 1930s, the United States implemented a nationwide housing reform system, known as redlining. The Home Owners’ Loan Corporation (HOLC) used residential maps of cities in the country to label areas. These new federal housing policies shaped the country’s geography by grading neighborhoods based on their perceived investment risk. The areas placed into the lower categories were classified as hazardous and unfit to qualify for mortgages, loans, and long-term investments. 

Although these maps were presented as “financial tools”, they systemically targeted the working class, immigrants, and people of color. In Newark’ s Ironbound, specifically around Ferry Street and Wilson Avenue, the areas labeled D1, D2, and D3, reflect a larger pattern of government designed residential segregation.

Classifications were not only made based on the infrastructure conditions, but also on the race, ethnicity, immigration status, and class composition of the area. The presence of immigrants, working class families, and people of color was presented as evidence of risk. For the Ironbound, this meant that long established communities were labeled as undesirable because of who was living there.

These redlining maps were acquired by federal agencies and banks, who used them to deny loans to residents of redlined neighborhoods. This prevented families from purchasing homes, refinancing mortgages and just overall making improvements for their lives. It trapped these residents in place and made it impossible for them to have the opportunity to relocate to cleaner and less industrialized parts of the city later on. Over time, the homes and buildings of the area fell into disrepair, which reinforced the thought that these neighborhoods are disposable.

This segregation created a cycle where disinvestment was followed by the physical decline of the community, and then used to justify the further neglect of the area and its residents. Concentrating marginalized communities in specific zones, set the stage for those same areas to be sacrificed for future environmental burdens. 

Industrial History Along the Passaic River

Even before redlining was formalized, Newark’s economy was deeply tied to industrial production. The Passaic River became the backbone of the city by the twentieth century, and was used by the manufacturing sector. A factory map from 1911, shows the location and density of the industrial facilities that lined the riverfront. These include chemical plants, metal works, and other heavy industries. These factories took advantage of rivers’ natural resources and used it to transport materials, but also to dump the waste their facilities created.  This is opposite to the supporting role the river used to play for the area’s original inhabitants. 

The Passaic River was once a flourishing ecosystem. Before the European settlement this waterway was a source of life for early communities. The Indigenous Lenape tribe used it as a part of their everyday lives as they relied on the clean water to fish, bathe, and means of transportation with canoes. In addition to this, the Lenape really respected and protected the river. They used sustainable practices like their fish weir systems that help them hunt larger amounts of fish, but still maintained the river’s healthy ecosystem.

This relationship changed dramatically later on with the industrial rise of Newark. Passaic River was now being used as an open sewer and contaminated with chemical byproduct, heavy metals, and untreated waste. This was not something done accidentally, as this area had very few environmental regulations. Over decades of this, the pollution accumulated and transformed a once functioning ecosystem, into a contaminated toxic site.

The Ironbound’s location along the river, made it especially vulnerable to the industry surrounding it. As industries kept expanding, the Ironbound became known as the industrial corridor of the city, forgetting the residential neighborhoods within. Economic priorities made the area the most logical place for factories, warehouses and transportation infrastructure to be placed, regardless of the people that lived there. 

Although this industrial growth was happening, no regulations were put in place to protect the residents. Instead, residential communities were forced to coexist with factories, rail yards, and toxic dumping sites. This created a scenario where the exposure to these harmful conditions became unavoidable, and turned a once natural resource into a daily risk for the surrounding community.

Zoning Policies Formalizing Pollution

By the mid-twentieth century, these industrial patterns were reinforced through zoning laws that designated the Ironbound as a place for pollution. The 1959 “Map of Existing Zoning Districts” shows how much of the Ironbound and riverfront was designated for industrial use 5. Heavy manufacturing, trucking routes/traffic, and hazardous land use was permitted, and placed next to homes, schools, and community areas. Factory location maps of the time show the distribution of the factories all being placed in the Ironbound section all along the rivers edge6. The exposure to toxic air and pollution became a part of everyday life for residents of this neighborhood. 

When we compare the North Ward of Newark to the Ironbound, the discrimination we see with the policies is obvious. The wealthier, and white neighborhoods of the city were protected from the industrial zoning. The residents of those communities were able to keep their homes and families away from environmental hazards placed on neighboring marginalized communities. This means the zoning policies were unequal, and were used to reinforce the patterns of segregation the city had before.7

Together, redlining and zoning laws worked together to create this environmental injustice by restricting where marginalized people lived, and contaminating those areas without regard to the effects it has on the people that live there.8 

Environmental Transformation of the Passaic River

Ecological Decline

All of the industrial dumping and regulatory neglect caused severe ecological harm. The resources once provided by the Passaic River are destroyed, and it is now one of the most polluted rivers in the country. Although now there are stricter regulations, the scars of that time are still present and continue to put the residents in harm’s way. Things like sediment disturbance, and flooding still affect the Ironbound everyday.

Direct Impacts on Land and Water

Furthermore, pollution was not only found in the water. Scientific studies on the river prove how the heavy metals, toxins and industrial chemicals settled into the soil, and would get released back into the water when storms, boats, or other variables stirred up the riverbed. When the river would flood the water and sediments also spilled into neighborhoods nearby and spread the toxins all over the streets, yards, basements, and into the soil of where people live. 

Ironbound residents can’t escape these dangerous conditions, because it’s in the air they breathe, the soil they walk on, and the water that flows through their neighborhood. The poor spatial planning of the city took away the opportunity for residents to create safe living environments for themselves. Over time, this constant exposure also changed the Ironbound’s  role in the city.

Environmental Justice Indexes 9

The Ironbound as a Sacrifice Zone

The Ironbounds’ history shows how it was transformed to a “sacrifice zone”; described as an area where environmental harm is tolerated for economic gain. Government agencies prioritized making profit over the safe and health of the people that populate their cities. 

These conditions were not accidental. They were designed by decades of policy decisions 10 that treated these marginalized communities as expendable by allowing them to live somewhere where they are exposed to pollution with the power to shape their lives negatively. 

Demograhics: Who Lives in the Ironbound?

Environmental Justice Indexes 11

Racial Composition

As of 2025, 72% of the people in the Ironbound identify as POC. From this we can begin to understand how housing discrimination changed the composition of the neighborhood. It also illustrates how minority communities were confined to live and stay in these harmful conditions. On the other hand, white and wealthier residents were allowed to move to non-industrialized areas that were protected. Meanwhile, the Ironbound was just seen as an undesirable place that was there to boost the city’s economy.

Economic Vulnerability

The economic vulnerability of the people that live there is also an indicator of early history. 51% of residents are low-income and do not have financial resources, safe housing, healthcare, and other basic human needs. A lack of financial stability, information, and transportation discourages involvement as well. Having to constantly work long hours also limits the ability for them to fight against these things. Because of this, the communities that are affected most, are also the ones with the least power to change their circumstances.

Community Persistence in the Face of Barriers

Social Factors and Structural Barriers 

Other factors that affect the residents are social and educational barriers. 29% of adults in this area never got a high school diploma. This is a reflection of the conditions they have had to deal with every day. Being a working class immigrant neighborhood means that many of the residents are forced to start working early to support their families. On top of that, schools and educational programs are underfunded. Illness in this community is also prevalent, with respiratory illnesses being very common within children which leads to missed school days. These factors all work together to leave a community without the tools needed to advocate for themselves. 

Community Reaction

The efforts of the community show the determination they have to get the Ironbound back to a clean and healthier environment for all.  They go through obstacles everyday, yet they have kept showing up for their fellow community members and  have fought these corrupt systems and policies by organizing and attending local groups, protests, and hearings that bring awareness to the topic.

Environmental Data Analysis

Air and Land Pollution

The Ironbound has experienced very high levels of air and land pollution. For example, the nitrogen dioxide, and Diesel particulate matter levels are in the 94th percentile. These are both toxic pollutants in the air caused by heavy truck traffic, highways, and other nearby waste from facilities. The most significant health impacts of these toxins are asthma, bronchitis, cardiovascular issues, learning disabilities, and neurological problems. They more commonly affect children and elderly and residents who live closer to the major roads, and industrial corridors of the area.

Ironbound residents are always in contact with some sort of environmental risks, as the area is in the 94th-95th percentile for Superfund, and toxic waste facilities. Unfortunately, this means the pollution and damage the Ironbound  experienced has disproportionately affected the marginalized communities of the city.

Conclusion

The simple act of walking to school every day for a child in Newark’s Ironbound, puts their health at risk. After examining how and why these conditions have been gotten to the level they are at now, it is clear that the daily toxic exposure these residents go through everyday was not done randomly. It was instead the fault of the housing policies, zoning decisions, and economic priorities made by the government. These decisions have shaped the way they lived for decades, and are now understood to be the result of the intentional choices made to directly affect their lives.

The redlining in the 1930s forced the immigrant working class people to stay in an area that was not safe for residential communities. Later when industrialization was at its peak, the river was transformed into a corridor that worked as the dumping ground for facilities. Furthermore, zoning laws in the 1960s encouraged the industrial use of the ironbound, even though it houses 50,000 residents that deserve access to clean air, water and soil. The environmental data also helps explain the variables that affect the health of the residents. All of these things worked together to create a site of environmental racism, injustice and inequality. 

Looking at Newark’s history is like using a magnifying glass to examine a pattern that has been repeated all over the United States. This country has a horrific and endless history of treating people of color like they don’t matter. The transformation of the river from being a vital ecosystem that helped sustain other forms of life, to a toxic dumping site, is one of the many examples that shows how environmental destruction is used as a weapon against marginalized communities. 

Still, the efforts the community makes, point to the possibility of a better future. Understanding and bringing awareness to history like the Ironbounds’, is key to making a change, and preventing these scenarios from happening again. 

Endnotes

1. Benjamin Kluger, “Roots in the Ironbound – the New York Times,” The New York Times , April 17, 1977, https://www.nytimes.com/1977/04/17/archives/new-jersey-weekly-roots-in-the-ironbound.html. 

2. Mary Bruno, An American River: From Paradise to Superfund, Afloat on New Jersey’s Passaic (DeWitt Press, 2012), pg 10-35.

3. Richard Rothstein, The Color of Law: A Forgotten History of How Our Government Segregated America (S.l.: Liveright, 2017), pg. 17-39.

4. Tuttle, How Newark Became Newark, 2009, pg.45-78.

5. Newark Central Planning Board, “‘Map of Existing Zoning Districts’ : Newark Central Planning Board ,” Internet Archive, January 1959, https://archive.org/details/NewarkMapND3D

6. “Map of Factory Locations in Newark ,” Internet Archive, January 1911, https://archive.org/details/NewarkMaps1911Factories.

7. University of Richmond, “Mapping Inequality: Redlining in New Deal America,” Digital Scholarship Lab, accessed December 18, 2025, https://dsl.richmond.edu/panorama/redlining/map/NJ/EssexCo/area_descriptions/D3#loc=14/40.7271/-74.1445.  

8. “ ‘Urban Renewal – Newark, New Jersey’ : Newark Central Planning Board,” Internet Archive, January 1957, https://archive.org/details/NewarkMapND3A. 

9. “Environmental and Residential Population Indicators.” EJSCREEN Community Report, n.d. https://ejamapi-84652557241.us-central1.run.app/report?shape={%22type%22:%22FeatureCollection%22,%22features%22:[{%22type%22:%22Feature%22,%22properties%22:{},%22geometry%22:{%22coordinates%22:[[[-74.162668,40.73501],[-74.161614,40.734172],[-74.157445,40.732524],[-74.14948,40.732816],[-74.142517,40.733699],[-74.131151,40.73423],[-74.138405,40.717221],[-74.169086,40.71569],[-74.179877,40.724602],[-74.172086,40.735334],[-74.170972,40.737861],[-74.162668,40.73501]]],%22type%22:%22Polygon%22}}]}&buffer=.1

10. Newark Housing Authority, “Housing Authority of the City of Newark: Report of Progress-1940 ,” Internet Archive, January 1940, https://archive.org/details/NewarkHousing020/page/n17/mode/2up

11. “Environmental and Residential Population Indicators.” EJSCREEN Community Report, n.d. https://ejamapi-84652557241.us-central1.run.app/report?shape={%22type%22:%22FeatureCollection%22,%22features%22:[{%22type%22:%22Feature%22,%22properties%22:{},%22geometry%22:{%22coordinates%22:[[[-74.162668,40.73501],[-74.161614,40.734172],[-74.157445,40.732524],[-74.14948,40.732816],[-74.142517,40.733699],[-74.131151,40.73423],[-74.138405,40.717221],[-74.169086,40.71569],[-74.179877,40.724602],[-74.172086,40.735334],[-74.170972,40.737861],[-74.162668,40.73501]]],%22type%22:%22Polygon%22}}]}&buffer=.1

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