A district court held that EPA does not have a mandatory duty to review an amendment to the Pennsylvania Sewage Facilities Act under the CWA. The amendment allows the use of certain on-lot sewage systems to satisfy the state's antidegradation requirements. An environmental group claimed the amendmen...

A district court dismissed environmentalists' claim that EPA should have reviewed the entirety of Florida's impaired water rule (IWR), not just the portion that constitutes a new or revised water quality standard. States retain discretion to enact and to enforce—without EPA’s review and approval...