Limerick's Groundbreaking CAST Mental Health Pilot Hailed a Success After Managing Over 1,000 Incidents
A year-long pilot programme in Limerick that deployed joint teams of Gardaí and HSE mental health professionals to respond to crises involving mental illness, substance abuse, and homelessness has been declared a resounding success, with the Community Access Support Team — known as CAST — having managed over 1,000 incidents during its trial period. The findings are now being assessed by An Garda Síochána and the Department of Health as part of a formal evaluation that could lead to a national rollout of the model.
Background
The question of how best to respond to mental health crises in public settings has been a persistent challenge for both the Garda Síochána and the HSE for many years. The traditional model — in which Gardaí are typically the first responders to incidents involving people in acute mental distress — has long been criticised by mental health advocates, clinicians, and community organisations. Gardaí, however well-intentioned, are not trained mental health professionals, and the default response of bringing individuals to emergency departments has been shown to be both costly and often counterproductive, with many people discharged without receiving appropriate follow-up care.
The CAST model draws on international experience, particularly from programmes in the United States, Canada, and the United Kingdom, where co-responder schemes pairing police officers with mental health clinicians have demonstrated significant reductions in arrests, emergency department presentations, and repeat incidents. The Limerick pilot was developed in partnership between the HSE Mid-West Community Healthcare, An Garda Síochána, and the University of Limerick, with funding secured through the HSE's mental health capital programme.
Limerick was chosen as the pilot location partly because of its existing strengths in mental health research and partly because of the particular challenges the city faces in terms of homelessness, substance misuse, and social deprivation in certain areas. The city has a well-documented history of gang-related violence and associated trauma, and the mental health needs of affected communities have often gone unmet by mainstream services.
Key Developments
Over the course of its twelve-month trial, the CAST team responded to more than 1,000 incidents across Limerick city and county. The team's interventions reportedly prevented a significant number of detentions under the Mental Health Act — a measure that, while sometimes necessary, is widely regarded as a last resort that can be traumatic for the individuals involved and resource-intensive for the health system. Emergency department presentations related to mental health crises also fell in the areas where CAST was most active, according to preliminary data.
The team operated on a co-response model, with a Garda and an HSE mental health professional attending incidents together. This allowed for immediate clinical assessment alongside the necessary public safety response, with the clinician able to connect individuals to appropriate community services rather than defaulting to hospital admission. The approach also proved effective in building trust with individuals who had previously had negative experiences with both the Garda and the health system.
The Irish Examiner reported that the findings have been presented to senior officials in An Garda Síochána and the Department of Health, with both bodies now conducting a formal evaluation of the pilot's outcomes. Mental health advocacy groups have welcomed the results and are calling for an accelerated rollout to other cities and counties.
Why It Matters
Ireland's mental health services have been under sustained pressure for years, with waiting lists for community mental health teams running into months and, in some cases, years. The CAST model offers a way of intervening earlier and more effectively, before crises escalate to the point where hospitalisation or arrest becomes the only option. For context, Ireland spends approximately 5.5% of its total health budget on mental health — below the European average of around 10% — and the gap between need and provision is widely acknowledged to be significant. A national rollout of CAST would not require a large capital investment but would demand a sustained commitment to joint working between the Garda and the HSE, two organisations with historically distinct cultures and priorities. The Limerick pilot suggests that this collaboration is achievable and productive.
Local Impact
In Limerick, the impact of CAST has been felt most directly in the city centre, the Southill and Moyross areas, and the communities around the University of Limerick campus, where student mental health needs have been a growing concern. Local Gardaí have spoken positively about the model, noting that having a clinician present at incidents allows them to focus on public safety while the mental health professional handles the clinical dimension. For individuals who have been through the CAST process, the experience of being met with a clinical response rather than a purely enforcement-based one has been described as transformative. The programme has also generated interest from Limerick City and County Council, which is exploring how the model might be integrated into its broader social inclusion strategy.
What's Next
The formal evaluation of the CAST pilot is expected to be completed by the end of September 2026, with a report to be submitted to the Minister for Health and the Garda Commissioner. If the evaluation recommends a national rollout, the Department of Health has indicated it would seek to include funding for an expanded programme in the 2027 Budget. Cities including Dublin, Cork, and Galway have already expressed interest in hosting CAST teams, and the HSE has been in preliminary discussions with Garda management about the staffing and training requirements for a scaled-up model.
