随着我国城镇化的深入推进和雨污分流改造的持续实施，城市地下排水管网得以快速发展和不断完善。据统计，目前全国排水管线的年增长速度为10%。根据市政发展速度和配套比例预测：一个50万人口城市，每年对检查井的需求在1万套左右；全国每年新增和改造的排水检查井数量至少在150万套以上。此外，根据最新住宅设计要求，厨房污水和卫生间污水须分流设计，也使得污水出户管数量翻番，所以目前建筑小区污水检查井的设计数量是以前的3倍以上。每个小区检查井数量少则上百个、多则上千个。按全国每年新增住宅建筑面积约3.6亿平方米的发展速度计算，初步估计每年需排水检查井250万套。综合下来，全国每年仅排水检查井市场需求在400万套以上。
With the deepening of urbanization and the continuous implementation of rainwater and sewage diversion transformation in China, the urban underground drainage network has been rapidly developed and constantly improved. According to statistics, the annual growth rate of the national drainage pipeline is 10%. According to the municipal development speed and supporting proportion forecast: a city with a population of 500000, the annual demand for inspection wells is about 10000; the number of newly added and transformed drainage inspection wells in China is at least 1.5 million. In addition, according to the latest residential design requirements, kitchen sewage and toilet sewage must be designed separately, which also doubles the number of sewage outlet pipes. Therefore, the design number of sewage inspection wells in the construction area is more than three times of the previous. The number of inspection wells in each small area can be as small as hundreds, or as many as thousands. According to the development rate of the country's new residential building area of 360 million square meters every year, it is preliminarily estimated that 2.5 million sets of drainage inspection wells are needed every year. Overall, the market demand of drainage inspection wells is only more than 4 million sets every year.
塑料排水检查井因其质量轻、耐腐蚀、强度高、不渗漏、使用寿命长、安装工期短以及采用工厂化专业制作，产品质量有保证等特点，由它与埋地塑料排水管材组合而成的无渗漏排水管道系统，在市政建设和建筑小区得到了广泛应用。
Because of its light weight, corrosion resistance, high strength, no leakage, long service life, short installation period, factory production and guaranteed product quality, the non leakage drainage pipeline system composed of plastic drainage inspection well and buried plastic drainage pipe material has been widely used in municipal construction and construction area