Our Septic Tanks Euro-ST range Ireland Waste Water’s Euro-ST Septic Tank range is designed to give maximum treatment while reducing overall costs for the homeowner. Our tanks are both reliable and cost effective while still bringing you the high quality that we expect from all our productsAll our tanks are competitively priced and guaranteed Irish. As our tanks are designed and manufactured at our factory in Cork, we offer our customers individually designed sewage treatment systems to suit your needs. Our tanks are EU Certified high quality concrete tank offering you savings of €1000 over 5 years.