Wierig Engineering (M) Sdn Bhd undertakes monthly maintenance and services of Sewerage Plants throughout Peninsular Malaysia. Our services are in line with German Rules and Regulations for Waste Water Treatment. Engaging Wierig Engineering to undertake and streamline the entire STP operations nationwide means that our team of dedicated service and maintenance staff are readily available within a 24-hour response time to attend, assess and rectify any ad hoc or break down work. Our professional team also adheres strictly to all safety procedures/requirements as outlined by SPAN and have the necessary course certification to carry out regular mothly routings to over 30 STP's nationwide.