Phosphorus Reduction Strategy for Inland Non-Tidal Waters
In June 2009, the Connecticut Department of Energy and Environmental Protection (DEEP) proposed a strategy to address the need for a reduction in phosphorus loadings to non-tidal surface waters from municipal wastewater treatment plant discharges. That strategy has been the topic of numerous discussions between DEEP, stakeholders, and U.S. EPA. A revised strategy has been developed which is expected to address the concerns raised in the last 18 months by those parties.
Coordinating Committee will meet quarterly to integrate and coordinate the activities of the three Workgroups, and address issues which cut across the scopes of the Workgroups. The committee will report to the State Legislature, and coordinate within DEEP to assure the recommendations address EPA's requirements.
A Coordinating Committee Public Meeting
was held on September 30, 2013 at DEEP Headquarters. This Informational Presentation
from the meeting includes: a PA 12-155 Summary, DEEP's "Collaboration Commitment", Workgroups, and Next Steps.
The 9/30/2013 meeting broke into the three workgroups after discussion of the presentation.
The DEEP NPS Management Program Plan Update conducted a Stakeholder public meeting on October 31, 2013 at 9:30 a.m. in DEEP's Phoenix Auditorium.
Scheduled NPS Phosphorus Workgroup meetings:
November 25, 2013, from 1 to 2:30 p.m. in Room 2B, at DEEP Headquarters.
January 6, 2014 from 1 to 2:30 p.m. in Room 2A, at DEEP Headquarters.
Scientific Methods Workgroup: Propose scientific methods to measure current phosphorus levels and to make future projections of phosphorus levels.
The schedule of upcoming Workgroup meetings:
October 31, 2013, 9 a.m. to 12 noon, room 4B, at DEEP HQ
Thurs. Nov. 21, 2013, 9 a.m. – 12 noon, room 2B, at DEEP HQ
Thurs. Dec. 19, 2013, 9 a.m. – 12 noon, room 2B, at DEEP HQ
Municipal Implementation Workgroup: Propose approaches and guidance for municipalities to comply with DEEP Water Quality Standards based on EPA criteria for phosphorus.
The next Workgroup meeting will be held November 12, 2013 from 9 to 11 a.m. at DEEP Headquarters. Future meetings will continue on the second Tuesday of the month from 9:00 AM to 11:00 AM
Questions or Comments on DEEP's Phosphorus Reduction Strategy and PA 12-155 compliance process may be submitted by email to: DEEP.firstname.lastname@example.org
Why is phosphorus a water quality concern?
Phosphorus is a naturally occurring element that is essential to support plant growth. When present in excessive amounts, phosphorus contributes to a process called “eutrophication” that can impair both aquatic life and recreational use of Connecticut’s water resources. Eutrophication, or nutrient enrichment, is a serious threat to water quality in Connecticut. Excessive loading of phosphorus to surface waters as a result of discharges from industrial and municipal water pollution control facilities (WPCF) or nonpoint sources such as runoff from urban and agricultural lands, can lead to algal blooms, including blooms of noxious blue green algae, reduction in water clarity, and in extreme cases, depletion of oxygen, fish kills, and other impairments to aquatic life. Currently, 21 water body segments have been identified on Connecticut’s List of Waters Not Meeting Water Quality Standards, where nutrient enrichment is a contributing cause of the impairment. Other water bodies that are not currently listed may also be impacted by nutrient enrichment and could cross the threshold to impaired status if nutrient loads from point and nonpoint sources are not effectively managed.
Nutrient enrichment has also been identified as one of the most pressing water quality issues facing the nation as a whole. As a result, the Federal Environmental Protection Agency has increased pressure on all states to take aggressive action to limit the quantity of phosphorus being discharged to surface waters. In Region 1, EPA has mandated that all New England states establish limitations on phosphorus in all wastewater discharge permits where the potential exists for the discharge to contribute to eutrophication and impair designated uses in downstream waters.
How is the strategy different from the one presented in June 2009?
The revised strategy addresses concerns regarding the protection of aquatic life in rivers and streams. The revised strategy uses best available science to identify phosphorus enrichment levels in waste receiving streams that adequately support aquatic life uses. The methodology focuses on significant changes in stream algae as the key aquatic life response to excess phosphorus loading. The methods used to develop this strategy were approved by the U.S. EPA in a letter dated October 26, 2010, as an interim strategy to establish water quality based phosphorus limits in non-tidal freshwaters for industrial and municipal WPCF's National Pollutant Discharge Elimination System (NPDES) permits until numeric nutrient criteria are established in Connecticut's Water Quality Standards (WQS).
Does the strategy cover non-waste receiving streams?
The strategy currently only covers waste receiving rivers and streams. Ongoing work is currently being conducted to refine the approach through additional data collection and by expanding the methodology to include non-waste receiving streams. It is expected that the ongoing work will lead to numeric nutrient criteria for all freshwater rivers and streams in the next WQS review cycle.
History of the Process and Additional Documentation
Public meetings were held regarding nonpoint source strategies (11/28/2012), and point source strategies (12/6/2012) for phosphorus controls in CT non-tidal waters.
Comments received by email and summaries from two PA 12-155 Public Meetings:
Written Comments Received from:
|Greg Bollard, Friends of the Lake (Lillinonah)|
|Bart Clark Oakwood EA, #1, comments on NPS meeting|
|Jonathan Luiz, Columbia Town Administrator|
|Mike Ruef, Coventry WPCA|
|Elizabeth Gara, COST|
|David Day, Danbury DPUC|
|Lawrence Kendzior, Meriden City Manager|
|William Dickinson, Wallingford Mayor|
|Raymond Drew, Torrington WPCA|
|Kachina Walsh-Weaver, CT Conf. of Municipalities|
|Roger Reynolds, CT Fund for the Environment |
|Vincent Susco, CT Assoc. of WPCAs|
Fred Andes, CT Municipal Nutrient Group
|Robert Lee, Plainville Town Manager |
|Southington Delegation Legislators|
2011 Phosphorus Strategy Documentation
February 16, 2011 and March 9, 2011
Watershed Summary Fact Sheets
Technical Documentation of Prior Proposals
Content Last Updated on November 25, 2013