Data is undoubtedly one of the government's most valuable assets. Whether it is policymaking and service delivery or public trust and transparency, the quality of government data directly affects outcomes for citizens and the effectiveness of public administration. However, many public sector organisations still struggle with inconsistent, incomplete or outdated data, which undermines evidence-based decision-making across departments.
Improving government data quality isn’t just a technical task. It should be a strategic priority that touches governance, processes, skills, culture and technology. This simple guide gives some practical steps government data professionals can take to raise the standard of their data and build confidence in how it’s used.
Why data quality matters in government
Good quality data is essential in the public sector because it:
· Enables accurate decisions in policy, budgeting and delivery. Poor data can misguide planning and resource allocation.
· Supports transparency and accountability to citizens, regulators and other stakeholders.
· Reduces risk, waste and inefficiency by preventing errors and duplication.
· Ensures compliance with standards, metadata requirements and legal frameworks (e.g. GDPR).
· Enhances interoperability across government systems and agencies.
The UK Government Data Quality Framework emphasises that poor quality government data undermines public outcomes and must be managed proactively, rather than reactively.
Core dimensions of high-quality government data
Government data quality should be assessed across six key characteristics, as outlined by DAMA UK as part of DAMA-DMBOK framework:
1. Completeness: Are all required fields present and meaningful?
2. Validity: Does the data conform to defined standards and formats?
3. Consistency: Are the same rules applied across datasets and systems?
4. Accuracy: Does the data reflect the real world correctly?
5. Timeliness: Is the data up-to-date and available when needed?
6. Uniqueness: Are records free of unnecessary duplicates?
These dimensions help government agencies understand where quality is lacking and prioritise improvements accordingly.
There's more information on these in our 'What does good data look like?' whitepaper.
7 steps to improve government data quality
1. Establish strong data governance
Quality improvements must be backed by clear governance structures. This includes defined roles (data owners, stewards, custodians), policies and accountability. Governance ensures consistency in how data is created, maintained, shared and used across departments.
· Define data ownership for each key dataset.
· Set policies on data naming conventions, classifications and standards.
· Embed quality KPIs in governance documentation.
Clear governance helps ensure data quality isn’t treated as a technical afterthought but an organisational priority.
2. Know your critical data assets
Not all data is equal. Government departments should:
· Identify high‑impact datasets that support major policy decisions or service delivery.
· Prioritise quality improvements based on risk and importance.
· Develop bespoke quality plans for each dataset.
This approach ensures resources are focused where they matter most first.
3. Develop a formal Data Quality Action Plan (DQAP)
A DQAP provides a roadmap to systematically raise quality by:
· Identifying critical data and quality standards.
· Assessing current data quality levels.
· Setting measurable targets and timelines.
· Assigning responsibilities and review cycles.
Government guidance recommends documenting findings and using dashboards to monitor progress over time.
4. Standardise data collection and handling
Errors often enter a system at the point of data capture. Standardised forms, validation rules and automated checks can reduce manual errors and ensure uniform data entry across teams and services.
Examples of this include:
· Use pre-defined value lists and structured formats.
· Implement automated data validation in citizen service forms.
· Use drop-down menus and input constraints where applicable.
Standardisation improves consistency and trust in datasets.
5. Automate quality monitoring and reporting
Automation can help simplify ongoing quality assurance:
· Implement automated quality checks and validation routines.
· Use data quality dashboards to surface problems early.
· Set up alerts for anomalies or missing critical fields.
Real‑time observability helps departments detect issues quickly rather than discovering errors after decisions have been made.
6. Invest in metadata and documentation
Metadata (information about your data) is crucial in government settings:
· Document the origin, meaning and lifecycle of datasets.
· Explain how data is collected, transformed, and used.
Good metadata helps users assess whether data is “fit for purpose” and supports interoperability across systems.
7. Build a data quality culture
Data quality is not just a technical problem, but also a cultural one. Departments with healthy data cultures share some common traits:
· Leaders understand why quality matters.
· Teams proactively address issues before they escalate.
· Quality practices are embedded early in data lifecycles.
· Regular training and upskilling opportunities.
Advanced practices for government data quality
Besides the above basics, government agencies can accelerate improvements by adopting modern, proactive practices (which is also where external support from specialists like Butterfly Data can make a difference).
These include:
· Data lineage and provenance: Tracing where data came from and how it has changed over time boosts transparency and understanding.
· Reproducible analytical pipelines: Developing automated, repeatable analysis workflows reduces variability and errors.
· Cross‑agency standards alignment: Aligning data definitions and formats across the public sector enhances data interoperability and integration.
· Leverage analytics and AI tools: Modern platforms enable predictive quality checks, anomaly detection, and pattern analysis to catch issues before they affect decisions.
Benefits of improving government data quality
Investing in data quality has measurable returns:
· Better informed policy decisions.
· Increased operational efficiency.
· Improved public trust and transparency.
· Easier compliance with regulations and standards.
· Reduced cost of rework and error correction.
High‑quality data empowers governments to serve constituents more effectively and supports a transparent, accountable data‑driven public sector.
Final comments
Improving government data quality is of strategic importance, not a one‑off project.
By grounding your efforts in governance, dimensions of quality, automation and culture change, you help your department make smarter decisions, deliver better outcomes and build trust in your public data assets.
Whether you’re a data steward, analyst, programme manager or senior leader, the steps above provide a practical roadmap to elevate your government’s data quality and make better use of this most critical asset.