What are the latest EPA guidelines regarding total dissolved solids and heavy metals in private well water potability tests for rural Pennsylvania?
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Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
What are the latest EPA guidelines regarding total dissolved solids and heavy metals in private well water potability tests for rural Pennsylvania?
3 real searches · 1 real-search pass
2026 EPA private well water testing total dissolved solids secondary standard heavy metals Pennsylvania DEP recommendations private wellsGoogle ↗
OBSERVEDReason
Pennsylvania DEP private water well testing recommended contaminants arsenic lead metals TDS accredited laboratoryGoogle ↗
OBSERVEDReason
EPA National Primary Drinking Water Regulations metals MCL arsenic lead cadmium chromium mercury 2026 secondary TDS 500 mg/LGoogle ↗
OBSERVEDConsequence
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (3)
Classes come from the query-classifier (a local Laya model). 3 of 3 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT3 real searches · gpt-6
2026 EPA private well water testing total dissolved solids secondary standard heavy metals Pennsylvania DEP recommendations private wells Google ↗
Pennsylvania DEP private water well testing recommended contaminants arsenic lead metals TDS accredited laboratory Google ↗
EPA National Primary Drinking Water Regulations metals MCL arsenic lead cadmium chromium mercury 2026 secondary TDS 500 mg/L Google ↗
- Drinking Water Regulations and Contaminants · epa.gov
- Secondary Drinking Water Standards: Guidance for Nuisance Chemicals · epa.gov
- National Primary Drinking Water Regulations · epa.gov
- Testing and Interpreting Results for Residential Water · extension.psu.edu
- Drinking Water Testing — Agricultural Analytical Services Lab · agsci.psu.edu
- Protect Your Home's Water · epa.gov
- Water Testing | Department of Environmental Protection · pa.gov
- Private Well Water Testing Checklist · pa.gov
Queries
3 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
2026 EPA private well water testing total dissolved solids secondary standard heavy metals Pennsylvania DEP recommendations private wells OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 | |
Pennsylvania DEP private water well testing recommended contaminants arsenic lead metals TDS accredited laboratory OBSERVED | Google ↗ AI Mode ↗ | — | Reason | — | — | 1x of 1 | |
EPA National Primary Drinking Water Regulations metals MCL arsenic lead cadmium chromium mercury 2026 secondary TDS 500 mg/L OBSERVED | Google ↗ AI Mode ↗ | — | Consequence | — | — | 1x of 1 |