Water Resources Management

Engineering
resilience
into water systems

Y-Consultancy delivers expert management consultancy in flood risk, water treatment, and integrated water resources planning — translating complex hydrological challenges into actionable strategies.

25+
Years experience
140+
Projects delivered
18
Countries served
4M+
People protected

“Water is the defining infrastructure challenge of our generation.”

Y-Consultancy founding principle
Areas of expertise
Flood Risk Assessment Urban Drainage Water Treatment Design Catchment Management Hydraulic Modelling Climate Adaptation Renewable Energy Regulatory Strategy
What we do

Consultancy services built
for water professionals

01

Flood Risk Management

Comprehensive flood risk assessments, hazard mapping, and resilience strategies for urban and rural catchments. From hydraulic modelling to community-level adaptation plans.

02

Water Treatment Advisory

Design review, technology selection, and operational optimisation for water treatment facilities. Specialising in municipal supply, industrial effluent, and decentralised systems.

03

Integrated Resources Planning

Strategic planning for sustainable water allocation, demand management, and basin-level governance. We bridge engineering, policy, and stakeholder engagement.

04

Hydraulic Modelling

Advanced 1D/2D/coupled hydrodynamic modelling using industry-standard software. Calibrated models underpinning infrastructure design, operational planning, and climate scenario analysis.

05

Regulatory & Permitting

Navigation of water-related regulatory frameworks across jurisdictions. Environmental impact assessments, permit applications, and liaison with water authorities and government bodies.

06

Climate Resilience Strategy

Future-proofing water infrastructure against changing precipitation patterns and extreme events. Scenario-based planning integrated into capital investment programmes.

How we work

A rigorous, evidence-driven methodology

Every engagement begins with deep diagnostic work. We do not apply off-the-shelf frameworks — we build bespoke analytical models grounded in site-specific data and local institutional context.

Discuss your project
01
Diagnostic & data collection
Hydrological surveys, existing data audit, stakeholder mapping, and problem framing. We invest heavily here — quality analysis depends on quality inputs.
02
Modelling & scenario analysis
Calibrated hydraulic and hydrological models, climate projections, and multi-scenario stress testing. Results are transparent and independently reproducible.
03
Options appraisal
Structured multi-criteria assessment of interventions — balancing technical performance, cost-effectiveness, environmental impact, and stakeholder acceptability.
04
Implementation & knowledge transfer
Delivery support through to construction, commissioning, or policy adoption. We build internal capacity so our clients do not remain dependent on external expertise.
Selected projects

Proven delivery across
complex water environments

Sanitation & IWRM

Integrated Total-Sanitation Programme, East Sumbawa

Technical assistance to the local governments of Kota Bima, Kab Dompu and Kab Bima to improve drainage, solid waste management, and wastewater treatment across the eastern part of Sumbawa island. Delivered demand-driven, community-led pilot projects and institutional capacity building across 18 government agencies.

Country
Indonesia
Duration
34 months
Contract value
€ 1,650,000
Sponge City

Sponge City Programmes, China

Series of urban water management assignments across multiple Chinese cities under the national Sponge City initiative. Scope included green roofs, water gardens, water retention reservoirs, and integrated stormwater systems. Cities include Xiamen, Hainan, Shanghai, Qingdao and Hebei.

Country
China
Cities
5
Type
NbS / Urban drainage
Water Management

Red Sea Beach Resort — Water Master Plan

Master planning of a fully self-sustaining water management system for a resort development in Marsa Alam, Egypt. Scope included water gardens, ponds, water supply, sewage treatment, coastal protection and marina design.

Country
Egypt
Duration
16 months
Client
RSBR Property Development
Knowledge Transfer

Delta Summit — International Water Assignments

Designed and facilitated field assignments for Dutch and Indonesian water-studies students ahead of the Delta Summit 2012 in Jakarta. Organised project visits across Semarang, Solo and Yogyakarta with POKJA Sanitasi, PDAM, Dinas PU and BAPPENAS.

Country
Indonesia
Client
Hogeschool Rotterdam
Duration
2 months
Wastewater Treatment

Green Wall Biofilter Pilot, Amorsolo Creek

Design and implementation of a green wall biofilter system for decentralised wastewater treatment in Manila. The pilot applies nature-based treatment technology to urban creek pollution, monitoring 12 parameters including BOD, TSS, ammonia, phosphate and E. coli, with results submitted to DENR-EMB.

Country
Philippines
Type
NbS / Pilot
Status
Ongoing
Our people

Senior practitioners with
field-tested expertise

IB
Ivo Bastings MBA, MSc
Founding Director

Over 25 years of experience in water resources management, infrastructure development, and renewable energy across Europe, Southeast Asia, and the Middle East. A civil engineer by training with a strong commercial and strategic outlook, Ivo has led complex multi-stakeholder programmes from concept through delivery in some of the world’s most challenging environments.

RT
Roy Timmer MSc
Senior Consultant

Over 30 years managing large-scale water and sanitation projects, including the East-Sumbawa Sanitation Program. Fluent in Indonesian, with a career largely based in Indonesia. Institutional expert, skilled negotiator, and proven team builder.

LinkedIn
EM
Emily Montoya
Consultant

Specialist in water resources planning, stakeholder engagement, and integrated environmental management across diverse project contexts.

LinkedIn
KF
Kenjie Fagyan
Consultant

Water sector professional with expertise in project development and implementation across the Philippines and Southeast Asia.

LinkedIn
AA
Abimanyu S. Aji
Programme Development Specialist

Climate finance and programme management specialist. Formerly Senior Manager at KEMITRAAN, overseeing Adaptation Fund and Green Climate Fund programmes. Fluent in Indonesian, English, and German.

Get in touch

Let’s discuss
your challenge

Whether you have a defined project scope or are still framing the problem, we welcome an initial conversation. No obligation — just a frank exchange with a senior practitioner.

Email
info@y-consultancy.com
Office
Amsterdam, Netherlands