Unsafe drinking water causes 160,000 diarrhoea deaths annually in children under five. Progress is uneven, with 785 million people still using water services not considered safely managed.
Key Takeaways
- WHO attributes 160,000 diarrhoea deaths per year to unsafe water in children under 5 in a frequently cited estimate used in WHO water fact sheets (under-5 diarrhoeal mortality)
- The World Bank estimates that poor sanitation and unsafe water cost countries roughly $200 billion per year in lost productivity and healthcare costs (global economic impact framework)
- A 2019 Lancet Commission on water and sanitation highlights that unsafe water and sanitation are a leading risk factor for health loss globally (quantified burden discussion)
- 785 million people still use at least basic drinking water services that are not safely managed (e.g., improved sources without safety controls under JMP)
- 10% of the global population used at least basic drinking water services in a 2015 comparison period that excludes safety constraints under JMP
- 60% of the global population used safely managed drinking water services in 2022 (WHO/UNICEF JMP estimate)
- The EU Drinking Water Directive (recast) includes an indicative value for PFAS of 0.10 µg/L (100 ng/L) for PFAS sum (European legal context)
- Lead in drinking water: WHO guideline value for lead is 10 µg/L (health-based)
- 1.7% year-over-year increase in global drinking water-related infrastructure spending in 2023 (OECD/EU water sector analysis)
- $1.7 billion global market size for point-of-use (POU) water treatment systems in 2023 (Grand View Research estimate for POU)
- $5.0 billion global market size for household water purifiers in 2022 (MarketsandMarkets estimate)
- $2.4 billion global water testing market in 2023 (Fortune Business Insights estimate)
- 10-year investment plans in the UK: water companies committing tens of billions pounds (Ofwat PR19/PR24 context)
- $1.0 billion World Bank financing for water supply and sanitation in a recent fiscal year project portfolio (World Bank Water Global Practice overview)
- $2.1 billion global annual cost for non-revenue water (NRW) losses (IWA / World Bank cost framework)
Unsafe water still drives major child deaths, while safer monitoring and treatment investments are growing worldwide.
Related reading
01 · Category
Public Health Impact4 stats
01
WHO attributes 160,000 diarrhoea deaths per year to unsafe water in children under 5 in a frequently cited estimate used in WHO water fact sheets (under-5 diarrhoeal mortality)
02
The World Bank estimates that poor sanitation and unsafe water cost countries roughly $200 billion per year in lost productivity and healthcare costs (global economic impact framework)
03
A 2019 Lancet Commission on water and sanitation highlights that unsafe water and sanitation are a leading risk factor for health loss globally (quantified burden discussion)
04
The International Water Association (IWA) notes that pathogen removal/disinfection is critical to reduce waterborne disease risk; the 99.9% pathogen log removal principle is widely used in water safety frameworks
Interpretation
Public Health Impact Interpretation
Public health impact from drinking water remains stark, with WHO linking 160,000 child deaths under age 5 each year to unsafe water and the World Bank estimating around $200 billion annually in lost productivity and health from poor sanitation and unsafe water.
02 · Category
Global Access3 stats
01
785 million people still use at least basic drinking water services that are not safely managed (e.g., improved sources without safety controls under JMP)
02
10% of the global population used at least basic drinking water services in a 2015 comparison period that excludes safety constraints under JMP
03
60% of the global population used safely managed drinking water services in 2022 (WHO/UNICEF JMP estimate)
Interpretation
Global Access Interpretation
From a global access perspective, progress is uneven because 785 million people still rely on drinking water that is not safely managed, even as safely managed service coverage rose to 60% of the world by 2022.
03 · Category
Industry Trends4 stats
01
The EU Drinking Water Directive (recast) includes an indicative value for PFAS of 0.10 µg/L (100 ng/L) for PFAS sum (European legal context)
02
Lead in drinking water: WHO guideline value for lead is 10 µg/L (health-based)
03
1.7% year-over-year increase in global drinking water-related infrastructure spending in 2023 (OECD/EU water sector analysis)
04
2024 U.S. EPA National Primary Drinking Water Regulations include 9 rules targeting contaminants requiring monitoring and compliance (count of NPDWR)
Interpretation
Industry Trends Interpretation
Industry Trends show that drinking water continues to tighten on key contaminants and funding, with the EU setting an indicative PFAS limit of 0.10 µg/L, WHO placing lead at a 10 µg/L guideline, global infrastructure spending up 1.7% in 2023, and the US EPA expanding monitoring and compliance coverage through 9 National Primary Drinking Water Regulations rules in 2024.
More related reading
04 · Category
Market Size9 stats
01
$1.7 billion global market size for point-of-use (POU) water treatment systems in 2023 (Grand View Research estimate for POU)
02
$5.0 billion global market size for household water purifiers in 2022 (MarketsandMarkets estimate)
03
$2.4 billion global water testing market in 2023 (Fortune Business Insights estimate)
04
$11.1 billion global water treatment chemicals market size in 2023 (IMARC Group estimate)
05
$43.8 billion global water and wastewater treatment market size in 2023 (Allied Market Research estimate)
06
$29.4 billion global membrane filtration market size in 2022 (Fortune Business Insights estimate for membranes)
07
$7.8 billion global bottled water market size in 2023 (Statista/industry estimates)
08
$3.6 billion global water meters market size in 2023 (IMARC estimate)
09
$1.1 billion global water monitoring and analytics market size in 2023 (MarketsandMarkets estimate)
Interpretation
Market Size Interpretation
For the Market Size angle, the drinking water landscape spans from a $1.7 billion point-of-use systems market in 2023 to a much larger $43.8 billion water and wastewater treatment market in 2023, showing strong overall scale alongside significant submarket opportunities like $29.4 billion in membrane filtration and $2.4 billion in water testing.
05 · Category
Infrastructure Investment3 stats
01
10-year investment plans in the UK: water companies committing tens of billions pounds (Ofwat PR19/PR24 context)
02
$1.0 billion World Bank financing for water supply and sanitation in a recent fiscal year project portfolio (World Bank Water Global Practice overview)
03
$2.1 billion global annual cost for non-revenue water (NRW) losses (IWA / World Bank cost framework)
Interpretation
Infrastructure Investment Interpretation
Infrastructure Investment in drinking water is ramping up globally, with the UK water sector committing tens of billions of pounds over 10-year plans and the World Bank funding $1.0 billion for water supply and sanitation in a recent fiscal year, while the $2.1 billion annual global cost of non-revenue water losses underscores why sustained investment is urgently needed.
06 · Category
Technology Adoption6 stats
01
78% adoption of advanced metering infrastructure (AMI) readiness in a 2022 utilities survey (smart water metering research)
02
$0.42/kWh energy consumption reduction average from optimizing pump schedules using smart water analytics (utility energy optimization case summaries)
03
A 2022 study in Environmental Science & Technology reported that real-time monitoring can substantially improve detection of contamination events in distribution networks (quantified detection performance)
04
In a systematic review, automated water-quality monitoring can reduce time-to-detection by hours to days compared with manual sampling in distribution systems (peer-reviewed meta-level findings)
05
99.9% pathogen inactivation goal corresponds to 3-log or higher treatment barriers commonly required in water safety plans (guidance)
06
A global review found average reduction of nitrate concentrations by 50–90% with ion exchange or reverse osmosis in drinking-water treatment systems (peer-reviewed synthesis)
Interpretation
Technology Adoption Interpretation
With adoption of advanced metering infrastructure at 78% in 2022 and real time monitoring cutting contamination detection from hours to days versus manual sampling, the technology adoption trend in drinking water is clearly shifting toward smarter, faster, data driven systems that also deliver major treatment impacts like 50 to 90% nitrate reduction.
report visual · Comparison
Safe vs. not safely managed drinking water
Most people now use safely managed drinking water, but hundreds of millions still lack safely managed services.
785 million people still use at least basic drinking water services that are not safely managed (e.g., improved sources 785
60% of the global population used safely managed drinking water services in 2022 (WHO/UNICEF JMP estimate)
60%
10% of the global population used at least basic drinking water services in a 2015 comparison period that excludes safet
10%
source-verifiedwashdata.org · data.unicef.org · apps.who.int2022
Reference
Cite This Report
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APA
Kevin O'Brien. (2026, February 13). Drinking Water Statistics. Gitnux. https://gitnux.org/drinking-water-statistics
MLA
Kevin O'Brien. "Drinking Water Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/drinking-water-statistics.
Chicago
Kevin O'Brien. 2026. "Drinking Water Statistics." Gitnux. https://gitnux.org/drinking-water-statistics.
Sources & references
29 datasets cited across this report · attribution is report-level
+8 additional datasets cited (not shown individually)