---
title: "Coliforms Data Fields | Definitions"
slug: "coliforms-data-fields"
description: "Learn about the datafile format and relevant input data for coliforms in the 1D water quality solver. "
tags: ["1D river modelling"]
updated: 2022-08-05T05:13:28Z
published: 2022-08-05T05:13:28Z
canonical: "help.floodmodeller.com/coliforms-data-fields"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.floodmodeller.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Coliforms Data Fields

## Data Input

In order to input the required information for this pollutant into the Water Quality model, the user needs to make sure that the Tab Coliforms appears in the WQ General Tab (please follow the description on the page [Preparing a Water Quality Datafile](/v1/docs/preparing-a-water-quality-datafile) for this). Then the user needs to select the Tab Coliforms and type in the necessary information for this pollutant in the fields which are shown on this Tab. Alternatively the necessary information for this pollutant can be typed in the .con file opened in a Textpad editor in the datafile format mentioned below.

## Datafile format

Line 1 COLIFORMS

Line 2 t90day, t90nit

Where:

COLIFORMS = keyword

t90day = Daytime T90 for coliforms (hours).

t90nit = night-time T90 for coliforms (hours).

---

Overview [Coliforms](/v1/docs/coliforms)