MapAlerter is a free service that gives Irish local authorities the ability to issue alerts for specific topics. Rather than informing an entire town about a water outage, all alerts are mapped so only the affected residents are notified. This ensures a high level of satisfaction among MapAlerter subscribers because everything they receive is relevant to them. You can register for a free account to receive alerts by SMS text message, email or smartphone app notification. You can also sign up to get alerts through Facebook Messenger when an alert is issued for your location.