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The EPA MCL for nitrate-N is 10 mg/L (45 mg/L as NO3−). For infants under 6 months, exceedance can cause methemoglobinemia ("blue baby syndrome"). Three technologies dominate nitrate removal: anion ex … read more

Arsenic in groundwater is a public-health crisis on three continents. The EPA MCL is 10 µg/L (0.010 mg/L); WHO matches that. Removing arsenic is straightforward chemistry once you understand speciatio … read more

Lab analysis takes a week and arrives after the sale closed. Field testing answers most pretreatment questions in 15 minutes. This guide details the seven tests every industrial water buyer and integr … read more

A new RO system delivered, piped, and powered up is not a commissioned system. Skipping commissioning is how new plants enter service with cracked elements, mis-aligned flow controls, and warranty-voi … read more

UV sizing comes down to three numbers: required dose (mJ/cm²), feed UV transmittance (UVT at 254 nm), and design flow rate. Get any of those wrong and either pathogens slip through or you over-pay for … read more