Limits for Brazilian CONAMA 357/2005 — conama

Returns the parameter limits defined by CONAMA Resolution 357/2005 for a given water-use class.

Usage

conama_limits(class)

Arguments

class: Integer or character. Target class (e.g., 1, 2, 3, 4 or "special"), according to CONAMA 357/2005.

Value

A tibble/data frame with one row per parameter and regulatory thresholds. Typical columns:

parametro: parameter name (character, normalized to snake_case)
classe: class label (character)
min/max (or equivalents): numeric thresholds (may be NA)
other metadata columns if present (e.g., unit, criterion)

Examples

# Class 2 thresholds (first rows)
head(conama_limits(2))
#> # A tibble: 6 × 8
#>   classe parametro   unidade     min   max observacao            status contexto
#>   <chr>  <chr>       <chr>     <dbl> <dbl> <chr>                 <chr>  <chr>   
#> 1 2      ph          unid          6     9 NA                    ok     Águas d…
#> 2 2      od          mg/L          5    NA mínimo em qualquer a… ok     Águas d…
#> 3 2      turbidez    UNT          NA   100 NA                    ok     Águas d…
#> 4 2      dbo         mg/L         NA     5 DBO5 a 20°C           ok     Águas d…
#> 5 2      coliformes  NMP/100mL    NA  1000 <=1000 em 80% de ≥6 … ok     Águas d…
#> 6 2      clorofila_a µg/L         NA    30 NA                    ok     Águas d…