A baseline assessment of emerging organic contaminants in New Zealand groundwater

Monitoring and Ecotoxicity Assessment of Emerging Contaminants in Wastewater Discharge in the City of Prague (Czech Republic)

“…These micropollutants are natural or synthetic substances that are not monitored nor regulated in a consistent manner, although they may have adverse effects on human health and ecosystem balance [2,3]. The main concern about these contaminants is that their effects can start manifesting at concentrations as low as micrograms per liter (µg/L) [3,4]. Common commercial products, such as pharmaceuticals and personal care products (PPCPs) are one of the primary sources of these contaminants.…”

“…Even if appropriate technologies exist, their use is limited because of the incremental cost they represent and the absence of regulations limiting the concentration of the majority of these substances in municipally treated discharge. Discharge and limited wastewater treatment has led to the presence of ECs in water bodies and even drinking water sources around the world [3,6].…”

Groundwater pollution: Occurrence, detection, and remediation of organic and inorganic pollutants

“…Of the fifteen antibiotics detected in agriculture groundwater, sulfathiazole, sulfamethoxazole, oxfendazole, and carbofuran were detected in 38%, 31%, 69%, and 42% of samples, respectively (Lee et al, 2019). Similarly, a variety of pharmaceuticals were also detected in the groundwater samples collected from the Waikato region, New Zealand (Moreau et al, 2019). The authors reported thiabendazole presence in 11% of the samples with the highest concentration of mefenamic acid 120 ng/L.…”

“…A baseline survey on emerging organic contaminants, including pesticides, reported a variety of pesticides in New Zealand groundwater samples (Moreau et al, 2019). Analysis of 61 groundwater samples collected from the Waikato region, New Zealand, shows the presence of a variety of pesticides.…”

“…This study includes sixty‐one sites, including ten sites with recognized sources of pollution, and 28 pesticides with concentrations above 100 ng/L. Among the pesticides detected at these sites, the highest concentrations were of pesticide chloridazon‐desphenyl, bentazone (herbicide), and imidacloprid (insecticide) detected at 7,800 ng/L, 6,000 ng/L, and 320 ng/L, respectively (Moreau et al, 2019).…”