Who regulates what, country by country
| Country | Water services regulator | Abstraction / resource | Discharge & environment | Instrument that names the number |
|---|---|---|---|---|
| Kenya | WASREB (Impact Report, annual) | WRA — Water Resources Regulations 2021 (metering, WRA 014 returns) | NEMA — Effluent Discharge Licence, LN 177/2024 | Impact Report 18: NRW 48% |
| Zambia | NWASCO (Sector Report, annual; 11 commercial utilities) | WARMA — groundwater permits | ZEMA — SI 112/2013 licensing; SI 3/2026 EIA with groundwater monitoring | Sector Report 2023: NRW 57.0% |
| Tanzania | EWURA (Water Utilities Performance Review, annual) | Basin Water Boards — water use permits | NEMC — Water Quality Standards Regulations 2007 | FY2024/25 review: NRW 42.3% |
| Ghana | PURC (tariffs) / GWCL (operator) | Water Resources Commission — abstraction permits | EPA Ghana — GS 1212:2019, AKOBEN rating | GWCL NRW ~54% (industry reporting) |
| Nigeria | State water boards (e.g. Lagos Water) | Federal Ministry / river basin authorities | NESREA — sector regulations (S.I. 33 of 2009 for food & beverages) | No consolidated national NRW figure published |
| Botswana | WUC (single national utility) | Department of Water & Sanitation — borehole rights | Discharge permit (DWA) against BOS 93 (2021 ed. 3) | WUC NRW ~45% (Aug 2026 briefing) |
| Zimbabwe | Local authorities; ZINWA bulk water | ZINWA / sub-catchment councils — abstraction permits | EMA — licence bands (blue/green/yellow/red) by concentration × mass flow | Quarterly EMA returns; banding, not a single limit |
| Uganda | NWSC (operator; Corporate Plan targets) | Ministry of Water & Environment — abstraction permits | NEMA Uganda — discharge permits | NWSC NRW 34% (2024), target 30% by 2029 |
| Angola | Provincial water companies (EPAL, Luanda); national water compact | INRH — resource management | Ministry of Environment — licensing | National target: NRW below 40% by 2027, 30% by 2030/32 |
| South Africa | DWS — Blue, Green and No Drop programmes | DWS — water-use licences, GN 704 for mines | DWS — GN 665 general authorisation limits | No Drop 2023: NRW 47.4% |
Non-revenue water: the regulators' own numbers
Figures in the first tier come from the regulator's own annual report, read in full; the second tier is utility or industry reporting where no regulator publishes a consolidated figure. The distinction matters, because the first tier can be cited to a page number.
| Country | NRW | Source and period | The line worth reading |
|---|---|---|---|
| Zambia | 57.0% | NWASCO Sector Report 2023 (primary) | Up from 56.7%; billed water sold below cost (K7.9 vs K12.61) — our reading |
| Kenya | 48% | WASREB Impact 18, FY2024/25 (primary) | Metering ratio 97% for three years while NRW rose from 43% — our reading |
| South Africa | 47.4% | DWS No Drop 2023 (primary) | 2.1 of 4.4 billion m³ a year; only four authorities certified excellent |
| Tanzania | 42.3% | EWURA review FY2024/25 (primary) | Worsened 5.5 points in a year; 75% of the loss is commercial — our reading |
| Ghana | ~54% | GWCL / industry reporting | Telemetry control room and metering laboratory already established in Accra |
| Mozambique | ~50% | Regional operators' average, World Bank programme documents | Reduction to 30% framed as the financial-sustainability lever |
| Botswana | ~45% | WUC reporting | 35,000 smart prepaid meters in Gaborone — a verification opportunity as much as a metering one |
| Malawi / Rwanda | 44% / 44% | BWB and WASAC reporting | Rwanda: 110,000 digital meters installed and losses still 44% |
| Uganda | 34% | NWSC 2024, Corporate Plan | Kampala zones 37–46%; DMA programme with VEI |
| Angola | Target <40% (2027) | National water compact, 2026 | Targets exist; measured baselines mostly do not |
The pattern the first tier shows is uncomfortable for meter vendors: in Kenya and Zambia metering coverage went up while non-revenue water went up. Customer meters answer "who used what"; they do not answer "where did the water go" — that takes bulk and zone measurement that our cross-country NRW analysis and the country NRW pages describe.
Effluent discharge limits: what the gazettes actually say
Selected parameters for discharge to a water resource, from the instrument each country's regulator enforces. Read the notes column — two of these are sector- or edition-specific, and the differences are the point: the same treated effluent is compliant in Zambia and non-compliant in Kenya.
| Country / instrument | pH | BOD₅ mg/L | COD mg/L | TSS mg/L | Faecal coliforms /100 mL | Oil & grease | Note |
|---|---|---|---|---|---|---|---|
| Kenya — NEMA LN 177/2024 (limits unchanged from 2006), Third Schedule | 6.5–8.5 | 30 | 50 | 30 | — | Nil | Temperature ±3 °C; TDS 1,200; designated-lab sampling at licence frequency |
| Tanzania — Water Quality Standards Regs 2007, First Schedule | 6.5–8.5 | 30 | 60 | 100 | — | 10 | Temperature 20–35 °C; total P 6; nitrate 20; tanneries and fertiliser plants have sector tolerances |
| Zambia — SI 112 of 2013, Third Schedule | 6.0–9.0 | 50 | 90 | 100 | 5,000 | Hydrocarbons 10 | E. coli ≤10; temperature ≤40 °C; ammonia 10; total P 1.0 in lake catchments |
| South Africa — GN 665 of 2013 (general limit) | 5.5–9.5 | — | 75 | 25 | 1,000 | 2.5 | Special limit: COD 30, TSS 10, coliforms 0; ammonia 6/2; free chlorine 0.25/0 |
| Botswana — BOS 93 (2004 values as reproduced by DBSA) | 6.0–9.0 | 30 | 75 | 25 | 1,000 | — | Current edition is BOS 93:2021 ed. 3 (BOBS, paid); confirm before designing to these values |
| Nigeria — NESREA S.I. 33 of 2009, Schedule I (food, beverages, tobacco) | 6–9 (6.5–8.8) | 30–50 | 60–90 | 25 | 400 (coliform MPN) | 10 | Sector regulation — other sectors have their own S.I.; two values listed in the schedule, take the stricter |
| Ghana — GS 1212:2019 (mining column, as reproduced by EPA Ghana) | 6–9 | — | 250 | 50 | — | 5 | Sector-specific standard sold by GSA; general-industry column not reproduced in a primary we could obtain |
| Zimbabwe — EMA effluent regulations 2006 | Licence bands (blue / green / yellow / red) set by concentration × mass flow rather than a single limit table; quarterly returns | Fee schedule per band not publicly confirmed — do not assume a lower band is cheaper | |||||
What a buyer should take from the table: continuous measurement of flow, pH and a COD surrogate at the outfall is the common denominator, and the parameter set the licence names is what the analyser chain has to cover. Country detail: Kenya · Tanzania · Ghana · Nigeria · Botswana · Zimbabwe · Zambia.
The site types that recur across the continent
Commercial utilities and water service providers. The regulators' league tables above are built from utility returns, and the utilities that score well share a measured water balance: bulk input metering, zoned consumption, minimum night flow. Country pages: Kenya, Zambia, Tanzania, Ghana, Nigeria, Botswana, Angola (PT).
Prepaid metering programmes. Gaborone's 35,000 smart prepaid meters, Harare's 600,000-meter concession, Kigali's 110,000 digital meters, Luanda's expanding pilot, Kinshasa's 100,000-meter order: prepaid solves collection, not losses, and the disputes it generates — bypass, over-billing, faulty meters — are settled by independent zone measurement. Country pages: Kenya, Zambia, Tanzania, Ghana, Nigeria, Botswana, Angola (PT).
Boreholes and self-supply. Kenya's 2021 regulations demand daily abstraction records and penalise unmetered abstraction; Zambia's 2026 EIA regime writes groundwater monitoring into project approval; Lusaka, Nairobi and Gaborone all run on more boreholes than anyone has counted. Pages: Kenya WRA compliance, Lusaka boreholes, ZEMA groundwater, Angola boreholes (PT).
Water kiosks, ATMs and standpipes. The Kenyan water ATM model — prepaid tokens, M-Pesa, unattended dispensing — has spread; the operational failure is unattended equipment nobody sees fail. Pages: water ATM prices, the water ATM business.
Factories on the sewer or the river. Every discharger in the limits table above needs the same artefact — a continuous record at the connection point or outfall — and the regulators are moving from periodic self-reporting to measured compliance: Tanzania's online emission monitoring system, Ghana's AKOBEN rating, Nigeria's facility closures. The country compliance pages carry the detail.
Mines. Dewatering, tailings return water and licensed discharge, under regimes from South Africa's GN 704 to Zambia's 2026 EIA rules — and, since Kafue in 2025, monitoring as a condition of operating rather than a nice-to-have. Our mining water compliance analysis reads four jurisdictions together.
Three rules that hold in every row
- Measure the system, not just the customer. Kenya's 97% metering ratio and Zambia's near-universal metering sit next to rising losses. Bulk input and zone measurement are what turn a regulator's percentage into a district a crew can walk.
- Design to the licence you hold, not the standard you know. COD limits span 50 to 250 mg/L across these countries; a pre-treatment plant specified for one gazette can fail the next border. Instrument the parameters your licence names.
- The record has to survive the grid. Load shedding in Zambia, Nigeria's six-hour supply days, Uganda's lengthening restoration times: every site on this continent needs local buffering and its own power, or the compliance record has gaps exactly when the regulator asks.
How we deliver across these countries: hardware pre-configured in Johannesburg, installation by your technicians or local partners under live remote guidance, LoRaWAN or 4G per site, edge buffering everywhere — and the regulator's parameter list built into the instrument set. See how we deliver and the water telemetry solution.