Payment for Ecosystem Service (PES) schemes is increasingly being used to obtain and drive environmental improvements. This paper describes two PES schemes, designed by Severn Trent Water (STW) to manage metaldehyde; Farm to Tap, and Product Substitution. Data collected over three years of running the schemes indicate that they can reduce the mean metaldehyde concentration at the Water Treatment Works by up to 61%; however, in‐catchment concentrations are more variable. Participant usage and behavioural surveys identify that the majority of farmers will use multiple methods to manage their slug problem. Farmer initiatives developed where rewards are paid for metaldehyde reductions, regardless of the process(es) used (Farm to Tap), result in 12% more metaldehyde reduction than when product substitution is used alone. Going forward, catchment management is the long‐term, economic and sustainable option. Schemes like Farm to Tap and Product Substitution are crucial to achieve water quality improvements and wider environmental benefits.

中文翻译：

---

农业用水；减少农药的集水区管理举措

生态系统服务付费（PES）计划越来越多地用于获得和推动环境改善。本文介绍了由Severn Trent Water（STW）设计的两种PES方案，用于管理甲醛。从农场到农场，以及产品替代。运行该计划三年来收集的数据表明，它们可以使水处理厂的平均甲醛浓度降低多达61％；但是，集水区中的浓度变化更大。参与者的使用情况和行为调查表明，大多数农民将使用多种方法来解决他们的弹头问题。制定了农民行动计划，无论使用何种工艺（从农场到出水），都应为减少甲醛的排放支付报酬，这比单独使用产品替代产品时减少了12％的甲醛。向前走，流域管理是长期，经济和可持续的选择。从农场到自来水和产品替代等计划对于实现水质改善和更广泛的环境效益至关重要。