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Drinking water quality, NV

Nevada contaminants ranked by SDWA exceedance

Which regulated contaminants exceed their maximum contaminant level (MCL) most often across Nevada's community water systems, per EPA's Six-Year Review sample-level dataset (2012-2019). Source data is public; every value is citable.

Sample data. SYR4 ingest is in flight on prod; this page renders deterministic placeholder data until the V1 importer lands the NV cohort.

Top 5 contaminants by exceedance count

ContaminantCategorySamplesAbove MCLMunis affected
total trihalomethanesdisinfection byproduct1,2406334
haloacetic acids (HAA5)disinfection byproduct9806325
leadlead copper2,1003421
arsenicinorganic7201311
nitrate (as nitrogen)inorganic1,850107

For citizens

Look up your own water system by name on the muni search, then read the drinking-water quality band on its profile page for per-contaminant readings + MCL ratios.

Find your utility

For chemical suppliers

Contaminants near or above MCL signal treatment-chemical procurement pressure. Lane intelligence pairs this with per-chemical bid timing on the supplier tier.

Supplier tier overview

Source: EPA Six-Year Review 4 sample-level compliance dataset (2023 release, 2012-2019 monitoring window). Next refresh: SYR5, expected 2029. As of 2026-05-23T00:00:00Z.