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ILLINOIS IMPAIRED WATERS LIST
In 2011, Illinois' Algonquin secured $1 million for a Woods Creek watershed plan. 10 years later, 27 projects costing $4.8 million had reduced pollution and improved the watershed for residentsThe Woods Creek watershed in Illinois became the focus of a long-term restoration effort after the Village of Algonquin received more than ...
In 1996, Illinois added Lake Decatur to its pollution list after farm runoff harmed its water. 28 years later, nitrogen levels fell below the 7.8 mg/L limitLake Decatur's water quality improved after implementing agricultural best management practices. Efforts to reduce nutrient and sediment ru...
In 2002, Illinois listed Sugar Creek as polluted by 2 water-quality problems. 20 years later, 1 was cleared after cleanup efforts helped restore healthy oxygen levelsSugar Creek's dissolved oxygen impairment was cleared after twenty years of restoration work. Projects across the watershed focused on redu...
In 2012, Arizona listed Miller Creek as impaired by E. coli from human waste. 8 years later, Prescott groups built a public restroom, cutting E. coli levels by 13%Miller Creek in Prescott, Arizona, was placed on the Clean Water Act Section 303(d) list in 2012 because of E. coli contamination associate...
In 2016, Colorado listed 67 miles of Timpas Creek as impaired for sulfate. 7 years later, local farmers helped delist 24 miles after BMPs restored drinking water qualityTimpas Creek's sulfate levels significantly decreased due to improved irrigation practices. Voluntary efforts by local producers focused on...
In 1996, Illinois listed Lake Decatur for phosphorus and nitrogen pollution. 25 years later, 3 grants helped Decatur expand BMPs and improve water quality in the lakeLake Decatur has struggled with agricultural runoff pollution for several years, prompting the launch of a water quality initiative aimed a...
In the late 1990s, Arkansas agencies urged landowners to use BMPs to keep cattle from streams. Today, 2 agencies and local owners protect these sensitive waters togetherFulton County faced water quality issues, prompting conservation efforts in the late 1990s. Landowners embraced livestock exclusion and con...
In 2008, Virginia listed Grease Creek as impaired for swimming. 16 years later, DEQ cleared it from the impaired list after watershed BMPs restored water quality in 2024Grease Creek in Virginia has finally escaped a problem that followed it for 16 years. The creek was listed as impaired for swimming in 2008...
In 2006, Arkansas DEQ listed Clear Creek for E. coli. 12 years later, the creek attained the recreation standard in 2018, restoring contact recreation after BMP projectsClear Creek in Arkansas has seen remarkable recovery since battling E. coli contamination back in 2006. Persistent water quality checks and...
In 2006, Virginia flagged the Rapidan River for failing swimming standards. 18 years later, DEQ removed it from the impaired list after BMPs restored water qualityRapidan River water quality in Virginia has finally turned a corner after nearly two decades of concern. A section once flagged for failing...
In 2010, Minnesota's Hay Lake was targeted for a 46-lb annual phosphorus reduction after nutrient pollution caused impairment. 12 years later, farm practices helped secure delistingIn 2022, Hay Lake triumphantly exited the impaired waters list, a commendable feat driven by rigorous nutrient reduction initiatives launch...
In 1998, PA DEP listed 67 miles of Warrior Run for siltation and flow problems. 26 years later, 8.5 miles were delisted after farmers and agencies improved water qualityWarrior Run water quality has improved after years of work across Pennsylvania’s agricultural watershed. In 1998, the state listed 67 miles...
In 2006, Illinois listed 10.69 miles of Cahokia Creek as impaired. 14 years later, Heartlands Conservancy's BMPs improved the stream, leading to delisting in 2020Cahokia Creek in Illinois was impaired due to severe streambank erosion and lack of vegetation. Heartlands Conservancy used grant funding t...
In 2004, Minnesota's East Boot Lake was listed for nutrients with a 27-pound phosphorus target. 18 years later, targeted projects improved water quality and led to delisting in 2022East Boot Lake in Minnesota was removed from an impaired waters list after eighteen years. Targeted watershed and in-lake management strate...
In 2006, Delaware listed the Broadkill watershed for nitrogen and phosphorus impairment. 18 years later, BMPs restored 7.6 miles of Ingrams Branch, ending the phosphorusThe restoration of Ingrams Branch is a powerful example of how best management practices can produce measurable improvements in water quali...
In 1994, Idaho listed Rapid Creek for sediment impairment. 18 years later, restoration improved habitat scores and Lower Rapid Creek was removed from the 2012 impaired waters listRapid Creek in southeastern Idaho offers a compelling example of how long-term watershed restoration can transform water quality and aquati...
In 2008, Minnesota listed Fish Lake as impaired for nutrients after severe algae blooms. 16 years later, the lake improved enough to be delisted after treatments and restorationThe 2008 impairment designation was an important step because it formally recognized that the lake was not meeting the desired water-qualit...
In 2004, Iowa listed Kent Park Lake as impaired after nutrient and sediment runoff harmed clarity. 20 years later, monitoring showed it met algae and turbidity standardsKent Park Lake in Johnson County, Iowa, experienced water-quality problems linked to nutrient and sediment delivery, resulting in its place...
In 2004, community partners began tackling Kent Park Lake's nutrient and sediment pollution. 20 years later, the lake met water quality standards and was removed from Iowa's impaired-waters list in 2024Kent Park Lake restoration took 20 years to deliver a result Iowa officials could finally recognize. The lake once struggled with nutrient ...
In 1994, Illinois EPA listed 50.75 miles of Silver Creek as impaired by farm pollution. 28 years later, Illinois removed the creek from its impaired list in 2022Upper Silver Creek in Illinois has been removed from an impaired waters list. Best management practices were installed to reduce pollution ...