{"slug":"trinkwasserwald","name":"Trinkwasserwald e.V.","tagline":"Converts conifer monocultures into broadleaf forest for groundwater; volunteer planting days each autumn","description":"Trinkwasserwald plants deciduous trees on former conifer clearings in Lower Saxony, Hesse, the Harz and elsewhere, because broadleaf forest lets more rain reach the groundwater that most German tap water comes from. In 2025 it planted 95,600 trees of 23 species on about 28 hectares. You can sign up as a planting volunteer for the autumn dates, bring a family to a Tag des Waldes planting, or support the work with a membership from 60 euros a year.","website_url":"https://www.trinkwasserwald.de","tier":"listed","resident_offers":["volunteer","education"],"listed_source_url":"https://www.trinkwasserwald.de","logo_url":null,"founded_year":null,"org_type":"nonprofit","scope":"national","headquarters":{"city":"Hamburg","region":"Hamburg","country":"DE","lat":53.5511,"lng":9.9937},"volunteer_url":"https://www.trinkwasserwald.de/changemaker/pflanzlotsin-werden/","donation_url":"https://www.trinkwasserwald.de/verein/spenden/","events_url":"https://www.trinkwasserwald.de/wald-sucht-unterstuetzung/","featured":false,"trees_on_record":0,"primary_activity":"reforestation","activities":[{"slug":"reforestation","name":"Reforestation","primary":true},{"slug":"education-advocacy","name":"Education & advocacy","primary":false}],"updated_at":"2026-11-08T08:55:33.975Z","url":"https://treerm.org/org/trinkwasserwald","markdown_url":"https://treerm.org/org/trinkwasserwald.md","api_url":"https://treerm.org/api/v1/organizations/trinkwasserwald","data_note":null,"derived":{"annual_trees":[],"latest_annual":null,"yoy":null,"cagr":null,"dollars_raised_per_tree":null,"cost_per_tree":null,"trees_per_volunteer":null,"survival":null,"hectares":null,"transparency":{"score":0,"label":"Opaque","points":[{"key":"annual","label":"Publishes annual tree figures","earned":0,"max":20,"why":"No year-by-year figures found"},{"key":"recent","label":"Figures are recent","earned":0,"max":15,"why":"No dated annual figure"},{"key":"sourced","label":"Every figure has a public source","earned":0,"max":10,"why":"No figures on record"},{"key":"money","label":"Publishes financials or cost per tree","earned":0,"max":15,"why":"No financial figure on record"},{"key":"survival","label":"Reports survival or monitoring","earned":0,"max":15,"why":"No survival or monitoring figure on record"},{"key":"verified","label":"Independently verified figure","earned":0,"max":10,"why":"Every figure is the organization's own count"},{"key":"programs","label":"Breaks figures down by program","earned":0,"max":10,"why":"No program breakdown"},{"key":"people","label":"Reports volunteers or events","earned":0,"max":5,"why":"No volunteer figures or events on record"}]},"methodology":"https://treerm.org/methodology"},"countries":["DE"],"social_links":{"instagram":"https://www.instagram.com/trinkwasserwald/","facebook":"https://www.facebook.com/trinkwasserwaldev","linkedin":"https://www.linkedin.com/company/trinkwasserwald/"},"programs":[],"metrics":[],"upcoming_events":[],"license":"CC-BY-4.0"}