Water Quality Assessment and Environmental Compliance in Brazil
Classifica valores do IQA/WQI em faixas qualitativas
Classifica TSI (Carlson) em faixas qualitativas
Classifica TSI (Lamparelli) em faixas qualitativas
Normalize/standardize units
CONAMA conformity check (detailed; default class = "2")
Limits for Brazilian CONAMA 357/2005
CONAMA conformity report (table)
CONAMA conformity summary (long format)
Text summary of conformity (bulleted, formatted)
Fix and validate geographic coordinates (lat/lon)
Generate analytical paragraphs (rule-based)
Trophic State Index (Carlson)
Trophic State Index (Lamparelli)
Water Quality Index (WQI / IQA)
NSF Water Quality Index (NSF WQI, prototype)
Multi-parameter analysis wrappers
Parameter analysis utilities (single-parameter)
Plot temporal para varios parametros (filtro por rio/ponto)
Plot temporal de um parametro (com filtro por rio e/ou ponto)
Resumo para varios parametros (filtro por rio/ponto)
Resumo estatistico por parametro (com filtro por rio e/ou ponto)
Tendencia para varios parametros (filtro por rio/ponto)
Tendencia temporal por parametro (por rio/ponto se existentes)
Boxplots by site/parameter
Heatmap of parameters vs. sites
Plot IQA by site/date
Plot interactive map of sampling points (default Leaflet pins)
Time series by parameter
Linha de tendencia temporal para parametros de qualidade da agua
Read water-quality CSV (robust parsing)
Render a water-quality report from the internal R Markdown template
Descriptive summaries by group
tikatuwq: Water quality tools for the Brazilian context
Tendencia monotona por parametro e ponto (Theil-Sen + Spearman)
Validate presence of required columns
Tools to import, clean, validate, and analyze freshwater quality data in Brazil. Implements water quality indices including the Water Quality Index (WQI/IQA), the Trophic State Index (TSI/IET) after Carlson (1977) <doi:10.4319/lo.1977.22.2.0361> and Lamparelli (2004) <https://www.teses.usp.br/teses/disponiveis/41/41134/tde-20032006-075813/publico/TeseLamparelli2004.pdf>, and the National Sanitation Foundation Water Quality Index (NSF WQI) <doi:10.1007/s11157-023-09650-7>. The package also checks compliance with Brazilian standard CONAMA Resolution 357/2005 <https://conama.mma.gov.br/?id=450&option=com_sisconama&task=arquivo.download> and generates reproducible reports for routine monitoring workflows. The example dataset (`wq_demo`) is now a real subset from monitoring data (BURANHEM river, 2020-2024, 4 points, 20 rows, 14 columns including extra `rio`, `lat`, `lon`). All core examples and vignettes use this realistic sample, improving reproducibility and documentation value for users.
Useful links