In July 2017 Pattaya Beach was fouled for a week by raw sewage that poured out of a storm drain. City officials blamed the incident on broken pumps and Pattaya's poorly maintained sewage-treatment plant. The environmental ministry declared it would step up enforcement of pollution laws and push Pattaya for better wastewater-treatment efficiency. According to the ministry, Pattaya has 1,047 identified sources of sewage and garbage pollution, the number increasing as the city grows. The sea water along central Pattaya beaches is of poor quality even in the absence of sewage spills and "could endanger human and marine life", the regional environmental office has said. They deemed sea water quality near central Pattaya beaches as "poor" and deteriorating. They judged water quality near Na Klua in North Pattaya, South Pattaya, Ko Lan, and Jomtien Beach as "fairly good". The city has considered expanding two water management plants to increase capacity for better treatment of wastewater prior to discharge into the ocean. The water treatment plant in Soi Wat Nongyai after expansion would be able to treat around 130,000 cubic metres of waste water a day, up from 80,000 cubic metres at present. The expansion was never implemented.