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Is your water system affected by perchlorate contamination?

Perchlorate, a toxic chemical that disrupts hormonal functions and poses significant risks to children, has been detected in many water systems. California has been a leader in addressing this contaminant, setting early notification levels in 1997 and establishing an enforceable maximum contaminant level (MCL) of 6 ppb in 2007. Recent efforts, including lowering detection limits to 1 ppb in 2024, demonstrate California’s continued commitment to increasing the momentum towards regulations for the contaminant. Furthermore, a recent court ruling has mandated that EPA must set a MCL for perchlorate in drinking water.

Testing water for Perchlorate

Questions we can help you answer

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What should a water system do once it finds perchlorate contamination?
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What treatment methods are effective for perchlorate removal?
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How much does it cost to build and maintain plants to treat the water?
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How can water systems recover treatment costs without burdening ratepayers?
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What should a water system do if the contamination source is unknown?
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What legal options exist for recovering costs from companies responsible for contamination?

Recent Success Stories

Through our work, we’ve helped our clients recover perchlorate contamination clean-up costs. We believe that our work shows our commitment to ensuring that the responsible parties—not local ratepayers—bear the costs of water cleanup.

$30 million for the City of Pomona
Secured to cover the costs of perchlorate contamination, ensuring that the cleanup burden wasn’t passed on to taxpayers.

$9.5 million for the City of Lindsay
A settlement to fully cover the costs of removing perchlorate from their drinking water supply.

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These victories, and many others, highlight how we help communities recover from the devastating impacts of water contamination while holding the polluters accountable.

Read our success stories

Since 2003, SL Environmental Law Group has been solely focused on water contamination litigation for various contaminants and has helped hundreds of clients, resulting in over $1.2 billion recovered in settlements and trials.

City of Santa MonicaCity of Anaheim CaliforniaCity of Sacramento
New York CityCity of Garfield New JerseyCity of Camden New Jersey
Miami Dade County FloridaCity of PensacolaMilwaukee County
City of North Chicago logoTown of Poughkeepsie logoTown of Princeton Massachusetts logo
City of OceansideCity of St. Louis Michigan logoCity of Pomona logo
Kennebunkport water logoBallico Cressey School DistrictMcSwain Union Elementary School District
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What is perchlorate, and why is it dangerous?

Perchlorate is a chemical often used in rocket fuel, explosives, and can be found as an impurity in fertilizer. When it contaminates water supplies, it interferes with thyroid function, which is critical for proper growth and development, especially in children. California has made great strides in regulating the contaminant, but many water providers and businesses affected by perchlorate still struggle to afford the costly treatment required to make their water safe.

Benefit from our perchlorate litigation experience

At SL Environmental, we have spent the past 15 years helping clients affected by perchlorate contamination recover clean-up costs.  Through our work we have developed a deep understanding of the historic agricultural practices and hydrogeology that resulted in the contamination of groundwater with perchlorate. This knowledge, combined with our 20+ years of experience with water contamination litigation, allows us to provide clients with support and guidance to navigate the cost recovery process.

How we can help

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Stay up-to-date

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Regulatory updates
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Insight into upcoming regulation
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Stay current on regulations' impact on your water system
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Work with leading water treatment experts to identify available options and endeavor to recover the expenses
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Collaborative strategy

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Assist in identifying the water contaminant origin
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Investigate potential claims to determine strategy and assess if litigation is the best course of action
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Help develop an effective communication strategy to address ratepayers' concerns
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We do the heavy lifting

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Efficiently handle the burdensome paperwork for you
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Streamlined process due to our deep understanding of water contamination cases
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Exclusive focus on water contamination ensures extensive legal knowledge and unwavering support
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No upfront costs

We provide our services on a contingency fee basis. This allows water systems to retain us without any upfront or ongoing fees or litigation costs.

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Unmatched water litigation experience

We have 20+ years of experience, exclusively representing water suppliers in contamination cases, including 1,2,3-TCP, MTBE, p-CBSA, PCE, PCBs, and PFAS. The polluters we aim to hold accountable know that we are highly experienced in our field.

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Less work for your organization

Our water litigation experience in TCP cases allows us to be time efficient, both preparing for and during the lawsuit.

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Recover costs while protecting your community

We go after the big corporations that manufactured the contaminants, protecting both ratepayers and local communities.

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Pomona has achieved its goal which is to make sure that the citizens of our City will not have to pay the cost of cleaning up a mess created by a large foreign corporation doing business in our city. This is not only a win for our community, but it is a win for all communities because it tells big corporations who are polluting our water and threatening the health of our citizens that they will be brought to justice. The City is grateful to our attorneys at SL Environmental Law Group whose expertise and perseverance were critical to the successful outcome of our case.

James Makshanoff

Former City Manager, City of Pomona