GRAF Sewage Treatment Plant Servicing
Specialist servicing, fault finding and repairs for GRAF sewage treatment plants across Hampshire, Surrey and West Sussex. Available 7 days a week including emergency call-outs.
Why choose us
GRAF System Service Specialists
Expert GRAF Sewage Treatment Plant Servicing
CPD Waste Water Ltd provides specialist servicing and repair for GRAF sewage treatment plants across Hampshire, Surrey and West Sussex. GRAF is a German-engineered brand increasingly popular in new rural developments across the South East, and our engineers are experienced with the full GRAF One2Clean and Klaro Easy ranges.
GRAF sewage treatment plants use a moving bed biofilm reactor (MBBR) process, where bacteria grow on small plastic carrier elements that move freely through the aeration zone. This process is highly efficient and produces a consistently high-quality effluent, but the system still requires annual servicing to check the blower, inspect the carrier media, remove accumulated sludge, and verify compliance with Environment Agency discharge standards. GRAF systems are increasingly specified on new rural planning permissions across Hampshire and Surrey.
Annual servicing & maintenance
Fault finding & diagnostics
Emergency call-outs 7 days a week
Same-day response available
What's Included in a GRAF Service
- Blower inspection, output test, and filter service
- MBBR carrier media inspection and condition assessment
- Primary zone desludging and clearance
- Inlet and outlet pipework inspection
- Control panel, alarm, and timer check
- Effluent quality assessment
- Written service report and Environment Agency compliance certificate
- Recommendations for parts or remedial works
Common GRAF Faults We Fix
- Blower failure or reduced output causing poor aeration
- Carrier media loss through outlet screens
- Outlet screen blockage causing system backup
- Sludge accumulation in the primary settlement zone
- Inlet blockages from non-biodegradable materials
- Control panel or timer faults
- Effluent quality issues due to organic overload or chemical damage to biofilm
Why Choose CPD Waste Water for Your GRAF System?
GRAF systems represent some of the most advanced treatment technology available for domestic properties, and our engineers stay up to date with the latest MBBR servicing techniques. We're experienced with both the One2Clean and Klaro Easy ranges and understand the specific requirements of MBBR systems. We carry GRAF blower filters and common spare parts, and can often complete repairs on the same visit as the annual service.
25+
Years experience
7 days
Emergency cover
3 counties
Service area
GRAF Sewage Treatment — Frequently Asked Questions
How often should a GRAF One2Clean be serviced?
GRAF recommends annual servicing for all their treatment plants. This is also a standard condition of Environment Agency discharge exemptions. We recommend booking your service at the same time each year.
What makes GRAF systems different from other treatment plants?
GRAF systems use a moving bed biofilm reactor (MBBR) process, which is more efficient than fixed film or activated sludge systems and produces a higher quality effluent. They're increasingly specified on new rural planning permissions where high effluent standards are required.
My GRAF system outlet screen is blocked — is this serious?
Yes. A blocked outlet screen can cause the system to back up and overflow. Call us on 01252 985722 — we offer emergency call-outs 7 days a week and can usually attend the same day.
Do you service GRAF Klaro Easy systems as well as the One2Clean?
Yes. We service the full GRAF range including the One2Clean, Klaro Easy, and older GRAF models. Call us to discuss your specific system.
Book Your GRAF Service Today
Call us on 01252 985722 or 07900 906195, or send us an email at Contactus@cpdwastewater.com. We cover Hampshire, Surrey, and West Sussex and are available 7 days a week for emergency call-outs.