Monitoring of 299 chemicals and biological effects in a water recycling plant (reverse osmosis/UV).
Efficient removal of organic chemicals agreed with reduction of effects in in vitro bioassays.
No chemicals were detected in water ultimately used to recharge groundwater.
Detected pesticides explained photosynthesis inhibition of wastewater treatment plant samples.
Detected chemicals explained <3% of cytotoxicity and <1% of oxidative stress responses.