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Peer-reviewedPublic domainPubMed Central

The Filtration of Public Water-Supplies

  • Allen Hazen1
  1. 1Bos Pompa
Open at sourceDOICite

Abstract

Sand filters, rates of flow, and what actually passes through The Filtration of Public Water-Supplies by Allen Hazen, 1905, reset and given away free. The original text stands on its own. This edition's only claim is that the work is public domain, that it has been set faithfully, and that it costs nothing. Audiences: Working operator — Runs the equipment daily and was never formally taught the theory behind it. Buyer or specifier — Has to judge a quotation or a specification without the vocabulary to test it. Reader of engineering history — Wants the primary text, not somebody's summary of it. Note: written from Indonesian operator context. Frameworks apply broadly to other emerging-market and SME settings.

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Cite

BibTeXRIS
BibTeX
@article{hazen2026filtration,
  title = {{The Filtration of Public Water-Supplies}},
  author = {Allen Hazen},
  journal = {PubMed Central},
  year = {2026},
  month = aug,
  doi = {10.5281/zenodo.22057412},
  url = {https://www.ncbi.nlm.nih.gov/pmc/articles/8735650},
  note = {Public domain},
}
RIS
TY  - JOUR
TI  - The Filtration of Public Water-Supplies
AU  - Allen Hazen
PY  - 2026
DA  - 2026/08/22
JO  - PubMed Central
DO  - 10.5281/zenodo.22057412
UR  - https://www.ncbi.nlm.nih.gov/pmc/articles/8735650
AB  - Sand filters, rates of flow, and what actually passes through The Filtration of Public Water-Supplies by Allen Hazen, 1905, reset and given away free. The original text stands on its own. This edition's only claim is that the work is public domain, that it has been set faithfully, and that it costs nothing. Audiences: Working operator — Runs the equipment daily and was never formally taught the theory behind it. Buyer or specifier — Has to judge a quotation or a specification without the vocabulary to test it. Reader of engineering history — Wants the primary text, not somebody's summary of it. Note: written from Indonesian operator context. Frameworks apply broadly to other emerging-market and SME settings.
ER  -