Although aggravated by movement of the ship bay of Eleusis, in recent years have seen a slow, yet noticeable improvement in water quality. According to recent measurements, progressively reduced concentrations of nitrates, nitrites and ammonia, while increasing transparency and dissolved oxygen. We also have increased the quantities and types of fish (mullet, mullet, etc.), and since 1993 there have been reports of fish deaths group. Today, the microbiological water quality on beaches of the Gulf of Eleusis, as shown by recent measurements is satisfactory. The concentrations of pathogens are within the acceptable and desirable limits of the law. In future water quality in the bay of Eleusis is expected to improve, provided that it continues to function Psyttalia. The area offers a large number of taverns, ouzo, coffee, etc.