U.S. Spanish-Required Water Utilities Dataset

1,454 U.S. public water systems federally required to publish Spanish-language Consumer Confidence Reports under SDWA §1414(c)(4)(D). Per-utility extraction (PWSID-keyed) with 27 fields covering source water, treatment, contaminant levels (lead/copper/PFAS/aesthetic), lead service line replacement status, and 9 derived L3 metrics including PFAS signal, LSL progress enum, and softener trigger. Filtered subset of the parent CCR-rich dataset (DOI 10.5281/zenodo.20216598) limited to records whose `ccr_v2_bilingual_required` field equals 'es_required' (Spanish-only mandate) or 'multilingual' (Spanish + other languages mandate). Total population served: 67,841,251. Top states by utility count: California (368), Missouri (183), Montana (131), Illinois (130), Texas (110). Use cases: Hispanic/Latino media reporting (Univision, Telemundo, La Opinión), civic-data nonprofits (UnidosUS, NCLR, Code for America), academic environmental justice research, public health departments serving Hispanic-majority ZIP codes. License CC-BY-4.0.