The PVC Cartel:
How America’s Pipe Giants Fixed Your Prices
The Non-Financial Ledger: What a Rigged Pipe Market Costs Real People
PVC pipe is not a luxury item. It is not a discretionary purchase. It is the literal plumbing of American life: the pipe buried under your street that carries drinking water to your tap, the conduit running through the walls of your school that keeps the lights on, the irrigation line your neighbor installed on their farm to grow food. You cannot swap it out for something cheaper if the price goes up. You cannot wait for a sale. If the pipe breaks, or the project starts, or the municipal contract is signed, the pipe gets bought at whatever price the market — or in this case, the alleged cartel — has decided it will be.
Mike Wallenstein, co-president of Neptune Plumbing in Ohio, told Spectrum News in September 2022 that PVC pipe had gone up roughly 75% and he had watched prices go “up and up and up over the past two years.” He described “a lot of volatility, a lot of market confusion” and things he had “never seen occur in my lifetime before.” Wallenstein is a business owner. He has some ability to pass costs along. The people at the end of that chain — the homeowners, the renters, the farmers — have nowhere to pass the cost to. They simply pay it.
The complaint documents something particularly calculated about how the alleged conspiracy handled downturns in demand. In November 2022, with pipe demand falling sharply, the converters did not compete for customers by lowering prices, as any competitive market would demand. Instead, through the OPIS report, they coordinated a collective refusal to drop prices, reasoning internally that “dropping their price won’t get them more volume.” They chose to wait out their own customers. They chose to let the demand drought pass rather than serve it. Buyers who came to the table asking for lower prices were allegedly tested: a converter would call a competitor to verify whether the buyer’s claim of a lower offer was real. It wasn’t. “So far, nobody has blinked,” the OPIS report noted in November 2022.
The people who got hurt most were contractors and plumbers who locked in project prices with clients before the cartel’s coordinated hikes hit. Federal contractors, municipal water authorities, school districts, and small construction firms signed contracts at one price and then watched their material costs explode. The complaint notes this directly: contractors “remain on the hook for PVC pipe increases that happen during the project if they agree to a set price with a client before the project begins.” The loss is not hypothetical. It came out of someone’s paycheck, someone’s project margin, someone’s farm budget.
And then there is the water infrastructure dimension. PVC pipe carries more than 70% of new buried water distribution lines and more than 75% of newly installed sanitary sewer systems in this country. When the alleged cartel inflated the price of that pipe by 250% over roughly a year and a half, every municipality that needed to repair or replace aging water infrastructure paid that inflated price. Cities and counties that delayed projects because they couldn’t afford the pipe — or that passed the cost onto residents through utility rate hikes — are not listed as plaintiffs. Their residents are not named in the complaint. But the pipe they needed, and could not afford at a fair price, was the same pipe these companies allegedly agreed to keep artificially expensive.
This is what price-fixing feels like when it happens at the infrastructure level. It is invisible until a pipe fails, a project stalls, a utility bill goes up, or a plumber has to tell a customer that the estimate they gave three months ago no longer covers the materials. The corporations booked record profits. Otter Tail watched its PVC pipe margins explode from a 14% average between 2013 and 2019 to 61% in 2023 — while selling 23% less pipe by volume. They made more money selling less product. That gap between volume and margin is the shape of the alleged conspiracy, rendered in financial data.
Legal Receipts: What the OPIS Reports Actually Said
Unlike most price-fixing conspiracies, which require whistleblowers or buried internal emails to surface the evidence, this one allegedly ran through a published, subscription-based industry report. The complaint cites the OPIS PVC & Pipe Weekly directly and at length.
January 22, 2021: The Conspiracy Opens
“While some market participants believed that the market needed to be reset with a new price letter close to the current price level, others said there is no reason converters can’t push prices higher without a new price letter. The only requirement would be discipline.”
- This quote proves the conspiracy was already active as of January 2021, the alleged start date of the Class Period. The word “discipline” in this context means cartel discipline: the willingness of each member to hold the line on prices rather than defect and undercut competitors for volume.
- The framing — “others said there is no reason converters can’t push prices higher” — shows OPIS is not neutrally reporting the market. It is actively transmitting the consensus strategy of one side of the market to all subscribers simultaneously.
October 28, 2022: Crediting the Co-Conspirators
“Converters g[a]ve credit to distributors, as they have been partners in the determination not to let prices slip… converters see no reason for prices to drop rapidly once they do start to retreat, as they have shown discipline thus far and see no reason why that should change.”
- This quote confirms that the alleged conspiracy extended horizontally to include distributors — the companies that sell to end consumers — meaning the price-fixing allegedly operated at both the manufacturing and distribution level simultaneously.
- The phrase “have shown discipline” repeated across multiple OPIS reports is not industry jargon. It is cartel language for compliance with the pricing agreement, and its recurrence across different weekly issues demonstrates an ongoing coordinated posture.
November 4, 2022: Testing Defectors
“Converters reported that recently there had been some cases of buyers fishing for a lower price by claiming that a competitor had sold to them at a lower number, but a phone call or two proved that this was not the case. So far, nobody has blinked… converters said they have resigned themselves to the fact that demand will be very low in Nov[ember], Dec[ember], Jan[uary] and Feb[ruary] and that dropping their price won’t get them more volume.”
- This passage documents active cartel enforcement. When a buyer claimed to have received a lower competing offer, the converter called the alleged competitor to verify — a direct communication that would constitute information sharing between rivals about active transaction prices, precisely the behavior antitrust law prohibits.
- “Nobody has blinked” is a direct confirmation that every conspirator was holding the agreed price floor. This is not parallel conduct that could be explained by independent business logic; it is coordination the companies themselves reported as a collective achievement.
- The explicit decision to accept lower demand rather than compete on price is the clearest admission in the complaint that the defendants were acting contrary to their individual self-interest — a classic indicator of cartel behavior under antitrust case law.
February 10, 2023: A Unanimous Price Hike Nobody Actually Wanted
“The increase announcements had been unanimous, even though not all converters were particularly enthusiastic about the idea… demand was still too low to support raising prices.”
- This quote is striking because it documents a price increase that the companies’ own market analysis did not justify. They raised prices together, unanimously, despite their own belief that demand conditions did not warrant a hike. This is the definition of a price-fixing agreement overriding the normal function of a market.
- The word “unanimous” appearing in the context of a coordinated price increase is direct evidence of an agreement, not independent parallel action.
February 24, 2023: Working in Concert with Distributors
“Converters spoke about working in concert with large distributors for months to keep pricing from sliding below Block 440 to prevent devaluing distributors’ inventories. They expressed some concern about whether distributors would return the favor and help keep prices from dropping once their inventories were depleted, or if they would revert to their previous pricing strategies in an effort to secure the lowest possible pipe prices.”
- “Working in concert” is not ambiguous language. The complaint alleges this describes the manufacturers and distributors jointly enforcing a price floor, with the floor set at “Block 440” — a specific quantity-based pricing tier for municipal water pipe.
- The concern about whether distributors “would return the favor” shows the agreement was transactional and conditional: distributors held prices in exchange for an expectation that converters would reciprocate. This is a bilateral conspiracy, not a unilateral decision by manufacturers.
May 26, 2023: Directing Atkore to Lead
“Some converters believed that as the originator of the new sheets Atkore needs to take a hard stand next week on new business at the higher price levels.”
- This passage shows OPIS functioning as a message relay. Competitors are using the weekly report to direct the market leader — Atkore, the largest U.S. PVC electrical pipe converter — to hold an elevated price level and not flinch. This is a coordination signal published openly to all subscribers.
- It confirms the hierarchical structure of the alleged cartel: Atkore as price leader, other converters as followers, and OPIS as the real-time communication channel binding them together.
June 21, 2024: The Escalation Playbook
“[C]onverters conceded they need to figure out how to push prices higher. The consensus this week was for a single price increase that would take prices up by about 5% over the current market level, with another percentage added to account for the discount. Then, if that works do it again and again until it stops working. Conduit converters have been successful with this strategy in the past.”
- This passage documents the conspiracy in real time. The “consensus” language shows an agreement being formed — in a published report — on exactly how large an increase to announce, at what discount to set it, and a commitment to repeat the process indefinitely until resistance appears.
- “Conduit converters have been successful with this strategy in the past” is an explicit acknowledgment that this method of coordinated incremental price escalation had already worked. It is not a future plan; it is a proven formula being applied again.
Societal Impact Mapping: Who Pays When Infrastructure Gets Cartelized
Public Health
PVC pipe carries America’s water. An inflated price on that pipe is an inflated cost on every project designed to deliver safe drinking water or treat sewage. The complaint documents that PVC pipe is used in approximately 66% of water distribution applications and 75% of sanitary sewer pipe applications in the United States.
- Municipal water infrastructure projects, which constitute 64% of the finished PVC pipe market, are the primary victim. When cities and water authorities pay artificially inflated prices for pipe, they either delay essential water system repairs or pass the costs to ratepayers through utility bill increases. The complaint documents water pipe prices remaining 4.7 times higher than pre-pandemic 2020 levels through the filing date.
- Every delayed water main replacement or sewer upgrade caused by unaffordable pipe prices represents a compounding public health liability. Aging water infrastructure already leaks contaminants and loses pressure; pricing a critical repair material out of reach extends the period of exposure for communities downstream.
- Contractors and plumbers who signed fixed-price project agreements before coordinated price hikes hit were left absorbing the difference out of their own margins or passing it to clients mid-project. Spectrum News documented this in September 2022, reporting that small plumbing businesses like Neptune Plumbing in Ohio were absorbing 75% price increases with no warning.
- PVC electrical conduit, which houses wiring in buildings, schools, and hospitals, was also subject to the alleged cartel pricing. The complaint documents the price of PVC electrical pipe reaching $3.77/ft at its 2021 peak, against pre-COVID baselines, with prices still at $1.68/ft in July 2024 — nearly triple the pre-pandemic level. Every building project, including schools and medical facilities, paid that premium.
Economic Inequality
The financial structure of this alleged cartel transfers wealth from the bottom of the supply chain — farmers, small contractors, homeowners, and municipalities — to the top: publicly traded corporations and their shareholders.
- Plaintiff Blake Wrobbel purchased PVC water pipe for his family farm in Tennessee in May 2022 and July 2023. He is the named plaintiff precisely because he is representative of the millions of small purchasers who had no leverage, no alternative, and no knowledge that the price they paid was allegedly the product of a coordinated conspiracy among producers controlling 61% of the market.
- Otter Tail Corporation reported its PVC pipe margin expanding from a 14% historical average (2013–2019) to 61% in 2023, while selling 23% less pipe by volume and achieving a 198% price increase per unit. This extraordinary margin expansion while volume declined is strong economic evidence that prices were decoupled from normal supply-and-demand dynamics.
- Atkore’s margin on electrical conduit expanded from 17–20% in 2016–2019 to 38% in 2023, while price per unit was up 86% and sales volume was down 9%. The same pattern — more revenue from fewer sales — appears across multiple defendants, indicating the price increase was structural and market-wide, consistent with coordinated pricing.
- Westlake Corporation saw its PVC pipe margin grow from 13.5% in 2019 to 22.5% in 2023, with a 74% price increase over the same period. Westlake is a NYSE-listed corporation (ticker: WLK), meaning a significant portion of the allegedly inflated revenue flowed directly to institutional investors and shareholders, not to workers or communities.
- The complaint identifies that in 2013 there were “at least a dozen” PVC pipe competitors in the U.S. market. Atkore’s president admitted on the record at Citi’s Global Industrial Tech and Mobility Conference in February 2024 that Atkore “bought those companies up and rolled up the industry.” Fewer competitors means less price competition. Industry consolidation funded by acquisitions created the concentrated market structure that made the alleged cartel viable.
- The complaint spans state antitrust claims across 37 jurisdictions, reflecting that artificially inflated PVC pipe prices reached every corner of the country. Low-income and rural communities — which often rely on older water infrastructure requiring more frequent replacement — faced proportionally higher burdens from inflated pipe costs in municipal budget cycles.
What You Were Told vs. Reality
The cartel’s alleged success depended on consumers and the public believing that PVC pipe prices were the product of normal market forces. The complaint documents exactly what was claimed vs. what was allegedly happening.
The “Cost of a Life” Metric
The numbers in this case are large enough to lose their meaning. This card is an attempt to translate what the alleged cartel’s profits represent in human terms.
What Now? The People Who Can Stop This and What You Can Do
This case is a class action filed by private plaintiffs. Regulators and public enforcers have their own ability — and responsibility — to act on the conduct described in this complaint.
Corporate Leadership Named or Implicated in Source Material
- Atkore Inc. — William Waltz, President: Publicly stated on a February 1, 2024 earnings call that Atkore is “still optimistic” about efforts to “push the prices in the industry up” and that the company “always aspires to increase our pricing.” Also stated at Citi’s Global Industrial Tech and Mobility Conference in February 2024 that Atkore deliberately acquired and “rolled up” competitors to gain pricing power.
- Otter Tail Corporation — Charles McFarlane, President and CEO: Stated on an April 2023 earnings call that no new competition has entered the market because “the cost of entry is pretty significant.” Stated on an August 2023 earnings call that prices “stay stronger” because customers “need the pipe to do the projects” — explicitly describing inelastic demand as a business advantage.
- NYSE-Listed Defendants — Atkore (ATKR) and Westlake Corporation (WLK): As publicly traded companies, their executives have fiduciary duties to shareholders and are subject to SEC disclosure requirements. Shareholders and securities analysts have the right to scrutinize the extraordinary margin expansion documented in this complaint.
- Mitsubishi Corporation (Japan): Parent company of three named defendants — Cantex Inc., Diamond Plastics Corporation, and Prime Conduit, Inc. — which together allegedly control approximately 42% of the U.S. PVC electrical conduit market.
Watchlist: Agencies That Have Jurisdiction and Authority to Act
- U.S. Department of Justice — Antitrust Division: Has primary federal authority to criminally prosecute price-fixing conspiracies under the Sherman Act. The DOJ has recently pursued cartel enforcement in poultry, publishing, and telecom. The PVC pipe market and the OPIS report mechanism both fall squarely within its mandate.
- Federal Trade Commission (FTC): The FTC previously cited Fortiline (a named distributor co-conspirator) for price-fixing in 2016. The same agency withdrew the 1996 antitrust safety zone policy in 2023 because it was too permissive on exactly the type of information exchange alleged here. The FTC has both the precedent and the stated policy rationale to act.
- State Attorneys General (37 jurisdictions): State antitrust claims have been filed across Alabama, Arizona, Arkansas, California, Colorado, Connecticut, D.C., Florida, Hawaii, Illinois, Iowa, Kansas, Maine, Maryland, Michigan, Minnesota, Mississippi, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Oregon, Rhode Island, South Dakota, Tennessee, Utah, Vermont, West Virginia, and Wisconsin. Every one of those state AGs has independent authority to investigate and act.
- Securities and Exchange Commission (SEC): Atkore (ATKR) and Westlake (WLK) are publicly traded. If executives made materially misleading statements to investors about the source of their margin expansion — characterizing cartel-derived profits as competitive business success — that is a potential securities disclosure issue.
- European Commission: The complaint notes prior EC enforcement against PVC resin producers (1999, €173.8M fine) and PVC-floor-covering manufacturers (2017, €302M fine). Given the foreign parent companies involved (Mitsubishi, PipeLife/Austria), international regulators have standing interest.
What You Can Do Right Now
- If you purchased PVC pipe in the United States between January 1, 2021 and the present, you are a potential class member. The nationwide injunctive relief class includes all U.S. purchasers. The state law class covers 37 jurisdictions. Contact a plaintiff-side antitrust attorney to understand your rights. No individual lawsuit is required to participate in the class recovery.
- Plumbers, contractors, and construction businesses that absorbed inflated pipe costs on fixed-price contracts should document those losses and consult legal counsel. Business losses from overcharges on materials are cognizable antitrust injury.
- Municipal water authorities, utilities, and local governments that paid inflated prices for water infrastructure pipe during the Class Period have independent standing to investigate their losses and seek legal remedies.
- Contact your state Attorney General’s consumer protection division and ask whether they are investigating the PVC pipe market. Public pressure on state AGs to act alongside federal enforcers has been effective in prior antitrust cases, including the poultry price-fixing investigations.
- If you work in the PVC pipe industry and have firsthand knowledge of coordination practices, price-signaling, or meetings where pricing was discussed with competitors, the DOJ Antitrust Division operates a leniency program that can provide immunity in exchange for cooperation. The complaint identifies trade association meetings — including through the Vinyl Institute, PPFA, Uni-Bell PVC Pipe Association, and CFFA — as potential venues for in-person coordination.
- Support local plumbing trade associations, contractor unions, and small business coalitions that are pushing back against opaque commodity pricing. The information asymmetry between large converters and small buyers is a structural problem that organized advocacy can begin to address.
The source document for this investigation is attached below.
Explore by category
Product Safety Violations
When companies sell dangerous goods, consumers pay the price.
View Cases →Financial Fraud & Corruption
Lies, scams, and executive impunity that distort markets.
View Cases →
