Brian Barton
The State Pollutant Discharge Elimination System (SPDES) is a permit program administered by the Bureau of Materials Management and Compliance Assurance, Water Permitting and Enforcement Division, that regulates the discharge of pollutants into the waters of Connecticut, including all surface waters, ground waters, and Publicly Owned Treatment Works (POTW). Any person or municipality discharging water, substances, or materials into the state's waters is required to obtain a permit prior to commencing the discharge. The Connecticut Department of Energy and Environmental Protection (DEEP) issues these permits, which include both individual and general permits. Individual permits are issued directly to an applicant and are customized based on the flow and pollutants contained in the discharge, while general permits authorize similar minor activities by one or more applicants. The SPDES program aims to protect the state's waters from pollution and ensure compliance with applicable standards and criteria.
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What You'll Learn
The National Pollutant Discharge Elimination System
DEEP offers two types of permits for wastewater discharges: individual permits and general permits. Individual permits are issued directly to an applicant and are customized based on the company's activities, flow, and pollutants contained in the discharge. General permits, on the other hand, are issued to authorize similar minor activities by one or more applicants. The general permit process may be quicker and less costly, so it is recommended to check if your discharges are eligible for authorization under a general permit before applying for an individual one.
The NPDES permit program plays a crucial role in maintaining water quality. After years of issuing NPDES permits and regulating discharges, the Environmental Protection Agency (EPA) recognized that stormwater runoff was a significant contributor to the problem. As a result, the EPA required states to regulate stormwater runoff and prepare non-point source management programs through the Water Quality Act of 1987. Stormwater runoff from impervious areas such as town streets, parking lots, and construction sites has been identified as the biggest source of pollution, posing the greatest risk to public health and the environment.
To address this issue, the NPDES program includes several initiatives to reduce pollutants and improve water quality. These initiatives include public participation and involvement, illicit discharge detection and elimination, construction site stormwater runoff control, and pollution prevention/good housekeeping programs. By involving the public and implementing measures to control and reduce pollutants, the NPDES program aims to protect and restore water quality in Connecticut.
The NPDES permit program in Connecticut covers a range of discharges, including stormwater associated with industrial and construction activities, dewatering wastewaters, swimming pool wastewater, and pesticide application. The state also issues draft general permits for public comment and input before finalizing them. Overall, the NPDES program in Connecticut plays a vital role in managing and reducing water pollution, ensuring the protection of the state's water resources, and promoting public health and environmental well-being.
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Permits and regulations
Any person or entity discharging water, substances, or materials into the waters of Connecticut is required to obtain a permit before commencing the discharge. This includes discharges into surface waters, groundwater, and sanitary and storm sewers. The Connecticut Department of Energy and Environmental Protection (DEEP) is responsible for issuing these permits.
There are two main types of permits available: individual permits and general permits. Individual permits are issued directly to a specific applicant and are tailored to their unique activities and the pollutants they discharge. General permits, on the other hand, authorize similar minor activities by one or more applicants. The general permit process is often quicker and more cost-effective, so applicants are advised to check if their discharges fall under this category before applying for an individual permit.
The permit fees vary based on the volume of wastewater discharged, with an initial application fee of $1300 for individual permits. The balance is calculated and billed after a preliminary review of the application.
The National Pollutant Discharge Elimination System (NPDES) is a significant component of the permit program. It addresses stormwater runoff, which is a major contributor to water pollution. The NPDES permits cover various discharges, including stormwater associated with construction activities, industrial activities, and swimming pool wastewater.
Businesses located in aquifer protection areas that conduct regulated activities must register with either the DEEP or the municipal Aquifer Protection Agency. Regulated activities include the use, storage, handling, or disposal of hazardous materials and other potential groundwater contaminants. These businesses must follow best management practices to minimize the risk of groundwater pollution and may need to implement new procedures or equipment.
The Pre-treatment Permit Program is another important aspect of the State Pollutant Discharge Program. It regulates discharges to sewage treatment plants through municipal sanitary sewer drainage systems or combined storm and sanitary sewer systems. All wastewaters, excluding domestic sewage, require either a pre-treatment permit or are regulated under the sewage treatment plant's permit.
Overall, the permits and regulations under the State Pollutant Discharge Program in Connecticut are designed to ensure that discharges do not cause pollution to the state's waters and protect public health and the environment.
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Water types and sources
Connecticut's Water Quality Standards and Criteria outline the acceptable uses and designated uses of the state's water bodies. The state's waters include all surface and groundwater, as well as sanitary and storm sewers.
Groundwater recharge in Connecticut is primarily driven by precipitation over the drainage basin. Water percolates from the land surface through the till, stratified drift, or along bedrock fractures to the water table. The flow of groundwater is largely localized within each basin drained by a perennial stream. This localized nature of groundwater flow and its connection to surface water have influenced the state's water management strategy.
Connecticut's groundwater sources include bedrock aquifers, which are widespread in the Connecticut Valley and provide most self-supplied water. These aquifers are categorized into sedimentary, crystalline, and carbonate rock types. Activities that have the potential to contaminate groundwater quality, such as hazardous material handling or waste disposal, are regulated in aquifer protection areas.
The state also has three types of public drinking water systems: Community Water Systems, Non-Transient Non-Community Systems, and Transient Non-Community Systems. These systems are regulated to ensure a safe and adequate drinking water supply for the state's residents.
Additionally, Connecticut has assumed the National Pollutant Discharge Elimination System (NPDES) program, issuing permits for various discharges, including stormwater, wastewater, and industrial activities. The state's permit programs aim to regulate discharges to sewage treatment plants and protect water quality.
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Industrial activities
The State of Connecticut has assumed the NPDES (National Pollutant Discharge Elimination System) program from the federal government. The state issues permits through the Connecticut Department of Energy and Environmental Protection (DEEP). The DEEP regulates the discharge of industrial wastewater to groundwater, surface water, and sewage treatment plants through permitting programs.
Wastewater generated from industrial activities can contain pollutants such as BOD (biochemical oxygen demand), suspended solids, nutrients, heavy metals, oils and greases, and other toxic organic and inorganic chemicals. If left untreated, these pollutants can cause serious harm to the environment. To prevent this, the DEEP has implemented discharge limits and requirements for treatment, monitoring, and reporting, which are specified in all permits. There are two types of permits available for industrial wastewater discharges: individual permits, which are issued directly to an applicant and are customized for a company's activities based on flow and pollutants contained in the discharge; and general permits, which authorize similar minor activities by one or more applicants.
The DEEP also regulates businesses located in aquifer protection areas that conduct regulated activities, such as the use, storage, handling, or disposal of hazardous materials and other potential groundwater contaminants. These businesses must follow best management practices or standards designed to minimize the possibility of groundwater pollution. New activities such as waste disposal, most manufacturing, and bulk petroleum or chemical storage are not allowed in aquifer protection areas. Regulated businesses must register their activities with the local aquifer protection agency or the DEEP and may need to implement new procedures or install new equipment to minimize the chance of pollution.
In addition to the DEEP's regulations, the Environmental Protection Agency (EPA) has also played a role in Connecticut's pollutant discharge program. The EPA has required states to regulate stormwater runoff and prepare non-point source management programs, as stormwater runoff from impervious areas such as town streets, parking lots, and construction sites has been identified as the biggest source of pollution and the number one threat to surface water quality. The EPA has also released compliance advisories to ensure that all NPDES permittees are complying with their permits, regardless of facility size or type.
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Aquifer protection areas
Connecticut's Aquifer Protection Area Program (APAP) protects major public water supply wells in sand and gravel aquifers, ensuring a plentiful supply of drinking water for present and future generations. Aquifer Protection Areas (APAs), also known as "wellhead protection areas", are designated around the state in sand and gravel aquifers that serve more than 1000 people.
The APAP is administered by the Department of Energy and Environmental Protection (DEEP), municipalities, and water companies. DEEP is responsible for overall program administration, establishing state land use regulations, approving aquifer protection area maps and local regulations, and developing guidance materials. The agency also assists municipal aquifer protection agencies with implementation, provides training for local officials and aquifer protection agency members, directly regulates major facilities within aquifer protection areas, and educates the public about groundwater protection.
Municipalities play a critical role in the APAP by appointing an aquifer protection agency, inventorying land uses within the aquifer protection area, and designating the aquifer protection area boundary. Water utilities are required to map the critical recharge areas of the aquifer which provide water to the well fields. This mapping is done through preliminary (Level B) and final (Level A) processes, with the former providing a general estimate and the latter refining it with site-specific data and ground-water modelling.
Businesses located in an APA and conducting regulated activities may be subject to specific regulations. Regulated activities include those that use, store, handle, or dispose of hazardous materials and other potential groundwater contaminants. New activities such as waste disposal, most manufacturing, and bulk petroleum or chemical storage are generally not allowed in APAs. Regulated businesses must register their activities with the local aquifer protection agency or DEEP and may need to implement new procedures or install new equipment to minimize the chance of pollution.
Connecticut has approximately 123 APAs located in 80 towns. An interactive map is available to view the APAs, with each area providing information and data when selected.
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Frequently asked questions
The State Pollutant Discharge Elimination System (SPDES) program is designed to eliminate the pollution of New York waters and to maintain the highest quality of water possible, considering public health, public enjoyment, protection and propagation of fish and wildlife, and industrial development in the state.
The SPDES program regulates land uses and activities that can contaminate ground water quality. Activities that use, store, handle, or dispose of hazardous materials and other potential groundwater contaminants are regulated.
The SPDES program affects any person or municipality that discharges water, substances, or materials into the waters of the state, including all surface waters, ground waters, and publicly owned treatment works (POTW). Businesses located in aquifer protection areas that conduct regulated activities may also be affected.
The SPDES program works by issuing permits for the discharge of pollutants into state waters. These permits include general permits and individual permits, with the latter being customized for a company's activities based on flow and the pollutants contained in the discharge.
