(Posted 11-03-2026 @ 8:11 a.m.) Results of fourth quarter 2026 (Oct. – Dec.) arsenic tests conducted by the New Mexico Environment Department (NMED) Drinking Water Bureau (DWB) show that all four arsenic treatment facilities (ATF) operated by the Camino Real Regional Utility Authority (CRRUA) remain NMED compliant based on the department’s Running Annual Average (RAA.) CRRUA provides water and wastewater services to Sunland Park and Santa Teresa, NM.

The Environmental Protection Agency (EPA) Maximum Contaminant Level (MCL) for arsenic in water is 10 parts per billion (ppb).

Tests results from samples the NMED DWB took on Oct. 14, 2026, show that water treated at all four ATFs is below the federal MCL of 10 ppb: Border Entry ATF at 7.0 ppb, Santa Teresa Industrial ATF at 6.0 ppb, Santa Teresa Community ATF at 5.0 ppb, and the Sunland Park ATF at 4.0 ppb. 

“This is the eighth straight NMED quarterly compliance test period in which all four CRRUA ATFs passed based on the RAA,” CRRUA Executive Director Juan Crosby said.

The RAA is determined by adding the previous four quarterly NMED test results for each ATF and dividing each total by four. 

“CRRUA continues to remain compliant with arsenic standards under the Safe Drinking Water Act,” Crosby added. 

CRRUA provides all arsenic test results on the home page of its website at crrua.org and on Facebook at facebook.com/crruainfo.

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