A water system must obtain a construction permit from the department prior to construction of a new public water system, expansions, alterations or modifications of an existing public water system. This includes waterline extensions, waterline replacements, drilling a water supply well, constructing a storage tank, adding a disinfection system, treatment changes, building a pump station or other improvements or modifications.
Construction of new public water systems and expansions, alterations, or modifications of an existing public water system must conform to the department’s Design Standards. These standards consist of proven technology, engineering principles, and sound water works practices used by consulting engineers to prepare plans and specifications for submittal to the department for review and approval. The department has included additional information about design standards under the Fact Sheets section of this page.
The Permits and Engineering Section is responsible for reviewing and approving engineering documents submitted by public water systems. Staff ensure engineering documents meet the Safe Drinking Water Regulations and Design Standards. The section also ensures water systems have technical, managerial and financial capacity before issuing a Permit to Dispense.
Implementation of the Backflow Prevention Program protects source water and prevent cross connections. Staff utilize the Area Wide Optimization Program to provide technical assistance.
The department will also complete a review of the Technical, Managerial and Financial capacity of a water system as a part of the Permit to Dispense application for Community and Nontransient Noncommunity water systems.
Water System Classifications
Community Water System - A public water system which serves at least 15 service connections and is operated on a year-round basis or regularly serves at least 25 residents on a year-round basis. These systems include towns, water districts, subdivisions, mobile home parks and residential facilities such as nursing homes or prisons.
Nontransient Noncommunity Water System - A public water system that is not a community water system and that regularly serves at least 25 of the same persons over six months per year. These systems include schools and factories.
Transient Noncommunity Water System - A public water system that is not a community water system, which has at least 15 service connections or regularly serves an average of at least 25 individuals daily at least 60 days out of the year. These systems include restaurants, resorts and campgrounds. These smaller systems are typically located in rural areas where it is not feasible to connect to a municipal water supply or water district.
Length of Permit
The permit will remain effective for the life of the facility. However, if a facility is no longer in compliance with state and federal regulations, the department can decide to revoke the permit. When problems occur at facilities, the department’s compliance and enforcement staff offer technical assistance and compliance assistance to try resolve the problems as fast and effectively as possible.
Laws, Rules and Regulations
- Federal Law: Federal Safe Drinking Water Act
- State Law: Missouri Safe Drinking Water Law Sections 640.100 to 640.140, RSMo
- Code of State Regulations: Division 60 Safe Drinking Water Commission, 10 CSR 60, Chapter 3 - Permits
- Commission, Board, Council: Missouri Safe Drinking Water Commission