Caerphilly

At a glance

Type

Welsh principal area

ONS code

W06000018

Area

277 km²

Fire and rescue

South Wales

Police

Gwent

Emergency planning partnership

Gwent Local Resilience Forum

Largest built-up areas

Caerphilly, Risca, Ystrad Mynach and Pontllanfraith

Council emergency pages

• Council website caerphilly.gov.uk
• Emergency planning Caerphilly (caerphilly.gov.uk)
• Gritting and winter roads Same page as above.
• Current emergencies and severe weather Same page as above.

Councils announce rest centres, road closures and emergency help on these pages and their social media. Find your council by postcode (GOV.UK).

Power cuts

Report a power cut or check one: call 105 free from any phone, or use the operator’s website.

Network operator (not your supplier):

• National Grid Electricity Distribution (South Wales)

Ofgem’s figures for the whole licence area, April 2024 to March 2025, counting cuts of 3 minutes or longer:

• South Wales (National Grid Electricity Distribution): 42.1 interruptions per 100 customers and 27.5 minutes without power per customer (2023/24: 46.3 and 26.1)

Great Britain as a whole: 39.7 and 35.1. These are area averages, not figures for Caerphilly alone. About this dataset

Flooding

Natural Resources Wales: 2 flood alert areas and 12 flood warning areas overlap Caerphilly. Waters named: River Rhymney, Ebbw, Sirhowy, River Ebbw, River Sirhowy, River Lwyd.

Warning areas include: River Ebbw at Risca; River Rhymney at Bedwas; River Rhymney at Bedwas House Industrial Estate; River Rhymney at Began; River Rhymney at Caerphilly; River Rhymney at Dyffryn Industrial Estate; River Rhymney at Llanbradach; River Rhymney at Machen; and 4 more.

Natural Resources Wales: flooding · Sign up to receive flood warnings

Weather warnings

The Met Office issues yellow, amber and red warnings for rain, wind, snow, ice, fog, thunderstorms and extreme heat. Current Met Office warnings (choose Wales on the map) · What the colours mean

Health: NHS help and the nearest A&E

For urgent medical help that is not life-threatening, use NHS 111 Wales or call 111. Find local services (NHS 111 Wales)

The nearest major emergency departments to the centre of each of the largest built-up areas, by straight-line distance (as the crow flies, not by road):

• Caerphilly: University Hospital Of Wales (8.2 km); The Royal Glamorgan Hospital (11.8 km); The Grange University Hospital (17.7 km). Nearest other emergency departments or minor injury units: Ysbyty Ystrad Fawr (6.2 km); Royal Gwent Hospital (15.8 km).
• Risca: The Grange University Hospital (9.4 km); University Hospital Of Wales (13.1 km). Nearest other emergency departments or minor injury units: Ysbyty Ystrad Fawr (7.8 km); Royal Gwent Hospital (9.7 km).
• Ystrad Mynach: The Royal Glamorgan Hospital (15.3 km); University Hospital Of Wales (15.9 km). Nearest other emergency departments or minor injury units: Ysbyty Ystrad Fawr (1.6 km); Royal Gwent Hospital (18.2 km).

About this dataset

Never Caught Out is not affiliated with the NHS.

Water supply

Water company for this area:

• Dŵr Cymru Welsh Water · In your area

To report no water, low pressure or a burst main, use the company’s page above. Your water bill names your supplier.

Water resource zones covering Caerphilly: SE Wales C.U. System (Dŵr Cymru Welsh Water). What a water resource zone is

What to do when the water goes off

Local risks and emergency planning

• Flooding: 12 flood warning areas and 2 flood alert areas overlap the council area (details above).
• Gwent Local Resilience Forum publishes a community risk register: the official list of emergencies that planners prepare for here. The register document.
• Hazards the register names include (our grouping of its wording): Flooding; Storms and severe weather; Cyber attacks; Pandemic; Outbreaks of infectious disease; Industrial and chemical accidents; Transport accidents; Animal disease; Terrorism; Snow and low temperatures; Power cuts; Heatwaves; Telecoms failure. Open the register for how likely and how serious each one is judged to be.

We list only what official sources say. We do not rate how safe or risky anywhere is.

Map

Phone and broadband coverage

Ofcom’s predictions of normal coverage in Caerphilly, January 2026. They are not live outages and not a guarantee for any address.

• Homes and businesses with 4G indoors from all four networks: 94%; from none: less than 0.1%.
• Outside homes and businesses, 4G from all four networks: 100%; from none: 0%.
• Land area with outdoor 4G from all four networks: 95%; from none: 1.2%.
• Premises that can get gigabit-capable broadband: 90%.
• Premises that cannot get decent broadband (10 Mbit/s down, 1 Mbit/s up) from a fixed line or fixed wireless: 8 (0%).

Check an address on Ofcom’s coverage checker · Phones when the network is down: how to reach 999 · About this dataset

Local radio

BBC Radio Wales · BBC Radio Cymru

This is the BBC station for the county or area, from the BBC Sounds station list. Coverage overlaps council boundaries, so tune to whichever station you receive.

Census 2021: planning prompts

• Households with no car or van: 20.3%
• Residents aged 65 or over: 20.1%
• Households of one person aged 66 or over: 13.8%

Who would fetch food or medicines for you or a neighbour on icy or flooded roads, and who would you check on in a power cut? Ask your pharmacist about repeat prescriptions before bad weather.

Largest built-up areas

• Caerphilly

  NRW warning areas naming Caerphilly: River Rhymney at Caerphilly.

• Risca

  NRW warning areas naming Risca: River Ebbw at Risca.

• Ystrad Mynach

  NRW warning areas naming Ystrad Mynach: River Rhymney at Ystrad Mynach.

• Pontllanfraith

Other built-up areas include Blackwood, Newbridge, Oakdale, Bedwas, Rhymney and Abercarn.

Neighbouring councils

Cardiff, Rhondda Cynon Taf, Blaenau Gwent, Torfaen, Newport, Powys, Merthyr Tydfil

Guides for any emergency

• Power cut: call 105 free. Priority Services Register · Compensation calculator
• Power cuts
• First hour of a power cut
• Flooding
• Flood alerts and warnings
• Storms
• Cold weather
• Grab bag and evacuation
• Emergency Alerts
• A battery or wind-up radio keeps working in a power cut.
• All council pages in Wales · All UK council pages