Topic
Wastewater
Wastewater is a recurring research topic on Health Canon. This hub collects related explainers and protocols, newest first, each with evidence grades and practical decision frameworks.
-
Environmental Health
Birth Control Hormones: Conventional WWTP Removal Rates
Activated sludge outperforms lagoons and filters for steroidal estrogens, but EE2 removal is incomplete and variable—effluent residuals drive ecological exposure.
-
Environmental Health
Sources of Estrogens in Water: Human Excretion, Livestock & WWTPs
From toilet to treatment plant to river—mass flows of natural and synthetic estrogens, plus agricultural pathways.
-
Environmental Health
EE2 Mitigation Decision Framework: Ecology, Human Dose & Practical Levers
A stepwise framework: verify matrix and units, separate fish risk from human pill-dose bridges, then pick municipal versus household actions.
-
Environmental Health
Environmental Fate of EE2: Persistence, Pseudo-Persistence & Sorption
EE2 lasts longer than natural E2 in many aerobic settings—continuous loading keeps chronic exposure even without infinite half-life.
-
Environmental Health
EE2 Chemistry & Related Estrogens: E1, E2, E3, Conjugates & Why Ethinyl Matters
17α-Ethinylestradiol is more potent and more persistent than natural estradiol—mass is not the same as estrogenic activity in water.
-
Environmental Health
Advanced Oxidation, Ozone & GAC for EE2: What Actually Removes Estrogens
Secondary treatment partially removes EE2; ozone, advanced oxidation, and granular activated carbon polish further when utilities invest.
-
Environmental Health
How Well Do Wastewater Plants Remove EE2 Birth-Control Estrogen?
Conventional plants partially remove ethinylestradiol—often ~50–80% depending on process—leaving ecological ng/L residues. Human drinking-water doses remain far below contraceptive pills.
-
Environmental Health
Fish Feminization from EE2: Vitellogenin, Intersex, and Population Collapse
Whole-lake experiments prove ecological harm at low ng/L—without making your faucet a contraceptive.
Frequently asked