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Bidding Documents

Infiltration / Inflow Analysis

About

At Miller & Associates, our Infiltration and Inflow (I/I) analysis services help communities better understand and manage excess water entering their wastewater systems. We work alongside local leaders and operators to identify sources of infiltration and inflow, reduce system strain, and improve overall performance, protecting both infrastructure and public investment.

Our team evaluates system conditions using field data, inspections, and flow monitoring to pinpoint problem areas and prioritize improvements. We present clear, practical recommendations that support cost-effective rehabilitation and long-term reliability. Our approach is proactive, helping communities reduce risk, maintain compliance, and extend the life of their wastewater systems.

Features

  • Flow monitoring & data collection
  • CCTV inspection coordination
  • Smoke testing & dye testing
  • System capacity evaluation
  • Defect identification & prioritization
  • Rehabilitation planning & cost analysis

Infiltration / Inflow Analysis Projects

Sanitary Sewer Evaluation & Improvements

Mankato, KS

Miller & Associates partnered with the City of Mankato to assess and rehabilitate its sanitary sewer collection system following increased lagoon flows and recurring maintenance issues. The $2.3 million project included system evaluation, design, and construction services to improve system performance and reduce inflow and infiltration, supported by multiple state and federal funding sources.

Project Features

  • Inspection of ~50,000 linear feet of sanitary sewer via Closed-Circuit Television (CCTV)
  • Identification of inflow/infiltration & root intrusion issues
  • Rehabilitation of sewer mains & manholes
  • Cured-In-Place Pipe (CIPP) lining
  • Manhole rehabilitation & improvements
  • Street reconstruction associated with utility work
Sanitary Sewer Evaluation & Improvements completed project

Sanitary Sewer Inflow/Infiltration Study & Improvements

Falls City, NE

Miller & Associates partnered with the City of Falls City to evaluate and address inflow and infiltration within its sanitary sewer system through a multi-phased study and improvement program. The project included system analysis, Closed-Circuit Television (CCTV) review, and development of design documents for targeted rehabilitation, with ongoing coordination to advance future phases of improvements.

Project Features

  • Multi-phased inflow & infiltration (I/I) study
  • Review of previous rehabilitation & Cured-In-Place Pipe (CIPP) lining efforts
  • Closed-Circuit Television (CCTV) data evaluation of targeted sewer segments
  • Desktop analysis of flow, rainfall, & groundwater conditions
  • Comparison of potable water use to wastewater flows
  • Development of rehabilitation strategies & prioritized improvements
  • Preparation of plans for sewer lining, replacement, relocation, & abandonment
  • Ongoing coordination for future phases of work
Sanitary Sewer Inflow/Infiltration Study & Improvements completed project

Wastewater System Improvements

Atwood, KS

Miller & Associates has partnered with the City of Atwood for over 20 years to evaluate, rehabilitate, and expand its wastewater system, addressing aging infrastructure, infiltration, and capacity limitations. Improvements have included lagoon upgrades, phased collection system rehabilitation with Cured-In-Place Pipe (CIPP) lining and lift station improvements, and recent system expansions to support new residential and industrial growth—all supported through USDA-Rural Development funding.

Project Features

  • Wastewater treatment facility improvements, including lagoon upgrades
  • Closed-Circuit Television (CCTV) inspection & system-wide collection system evaluation
  • Phased rehabilitation of sanitary sewer infrastructure
  • ~35,000 linear feet of Cured-In-Place Pipe (CIPP) lining
  • Targeted point repairs & manhole additions/adjustments
  • New lift station & force main installation
  • System expansion to serve industrial & residential growth areas
  • ~5,000 linear feet of new sewer mains & 25 manholes
  • New submersible lift station for system expansion
Wastewater System Improvements completed project