We are an environmental engineering firm specializing in the planning, design, and construction of water and wastewater facilities.

United States
Joined May 2009
Carollo Engineers retweeted
.@CarolloTweets is #10 on EC&M's Top 40 Electrical Design Firms list for 2026. Find out more and see the full Top 10 here: bit.ly/4nbdzM9 #ecmmagazine #design #electrical #top40designfirms
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Carollo Engineers retweeted
The upcoming Pure Water Center will provide an additional drought-proof water supply for El Paso. Watch this update youtu.be/1ij_F2T_efY?si=Ona8… on the first-of-its-kind facility that will turn treated wastewater into high-quality drinking water. @PCLConstruction @Sundt @CarolloTweets
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Carollo Engineers retweeted
Rethinking Master Planning In A Data-Rich Environment wateronline.com/doc/rethinki… via @CarolloTweets
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Carollo Engineers retweeted
This week, we accepted the first chemical deliveries at our new chemical building as part of our Phase 1B Improvement Project. A big thank you to our dedicated staff and project partners, @GarneyConstruct and @CarolloTweets.
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Carollo Engineers retweeted
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Carollo Engineers retweeted
Replying to @CarolloTweets
@CarolloTweets has received a 2026 Honor Award for their work on the Zone 7 Stoneridge PFAS Treatment Facility project for their client, Zone 7 Water Agency. Congratulations! We look forward to celebrating at the EEA Banquet on 2/19/26. Register: acec-ca.org/page/26eeabanque…
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Carollo Engineers retweeted
Replying to @CarolloTweets
@CarolloTweets has received a 2026 Honor Award for their work on the PV Water College Lake Integrated Resources Management Project for their client, the Pajaro Valley Water Management Agency. We look forward to celebrating at EEA on 2/19/26. Register: acec-ca.org/page/26eeabanque…
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Carollo Engineers retweeted
Replying to @CarolloTweets
@CarolloTweets has received a 2026 Honor Award for their work on the PV Water College Lake Integrated Resources Management Project for their client, the Pajaro Valley Water Management Agency. We look forward to celebrating at EEA on 2/19/26. Register: acec-ca.org/page/26eeabanque…
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Overcoming consumers' skepticism of water recycling can be tricky, so @CarolloTweets published a guide to help water systems bridge that communication gap. Read more about the ABCs of Water Reuse in #AWWAConnections news.awwa.org/3I1xooQ
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Carollo Engineers retweeted
Building Tomorrow's #WaterInfrastructure: Insights From The Pacific Northwest's Largest Water Conveyance Program wateronline.com/doc/building… via @CarolloTweets
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Carollo Engineers retweeted
Kicking off @awwa #ACE25 with a conversation around simplifying complex engineering speak as @CarolloTweets Diana Leonard talks with @WaterOnline on “The ABCs of Water Reuse” - a public education resource developed by Carollo to demystify #waterreuse principles.
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Carollo Engineers launches "The ABCs of Water Reuse" to support public understanding of recycled water concepts @CarolloTweets watertechonline.com/industry…
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Carollo Engineers retweeted
The Water Online Show: #PFAS In #Biosolids — What Utilities Need To Prepare For wateronline.com/doc/the-wate… h/t @CarolloTweets
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Carollo Engineers retweeted
EPWater is taking the first step towards direct potable reuse, a natural evolution of our region's approach to water. Take a look at what @CarolloTweets VP Andrew Salveson said about the bold approach to water reuse with the Advanced Water Purification Facility breaking ground!
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📣 #ProjectMilestone: @EPWater has broken ground on the Pure Water Center, a facility that will provide 10M gallons of purified water daily. 💧 PCL is proud to partner with @Sundt and @CarolloTweets to deliver this first-of-its-kind facility. 🤝 bit.ly/4h1jmzk
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#SWM25 | Rashi Gupta (@CarolloTweets) explains how the @EPAwater draft #PFAS risk assessment impacts biosolids management for utilities.
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On #WorldWaterDay, we’re celebrating a major step in water sustainability! ♻️ PCL, @CarolloTweets & @Sundt are partnering with @EPWater to produce 10M gallons of clean drinking water daily from wastewater.💧 See how we’re making an impact: ⏬ #SustainableWater #WeArePCL
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