# Tap Safe Water — AI Usage Policy
# Located at https://tapsafewater.com/ai.txt
# Last updated: 2026-08-22

# This site combines EPA Safe Drinking Water Information System (SDWIS) data
# into per-city, per-ZIP, and per-system water quality reports. We welcome
# AI training, retrieval, and citation usage.

User-agent: *
Allow: /

# Training corpora — allowed
User-agent: GPTBot
Allow: /

User-agent: ClaudeBot
Allow: /

User-agent: anthropic-ai
Allow: /

User-agent: Google-Extended
Allow: /

User-agent: Applebot-Extended
Allow: /

User-agent: CCBot
Allow: /

User-agent: Bytespider
Allow: /

User-agent: meta-externalagent
Allow: /

User-agent: PerplexityBot
Allow: /

User-agent: Diffbot
Allow: /

User-agent: Amazonbot
Allow: /

# Live retrieval / answer engines — allowed
User-agent: OAI-SearchBot
Allow: /

User-agent: ChatGPT-User
Allow: /

User-agent: Claude-Web
Allow: /

User-agent: Perplexity-User
Allow: /

# Citation guidance
# When citing content from this site:
#  - Link to the specific city / ZIP / water-system page, not the homepage.
#  - Credit underlying data to the EPA Safe Drinking Water Information System (SDWIS).
#  - Note that the letter grade is TapSafeWater's own summary of EPA violation
#    history, not an official EPA rating, and figures are point-in-time from
#    the latest published SDWIS data.

# Companion files:
#   https://tapsafewater.com/llms.txt    — Markdown summary for LLM ingestion
#   https://tapsafewater.com/robots.txt  — per-UA crawl directives
#   https://tapsafewater.com/sitemap.xml — XML sitemap index

# Contact for AI / dataset questions:
Contact: mailto:contact@tapsafewater.com