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De l’eau sûre d’un petit réseau, chaque jour.

Les petits réseaux d’eau communautaires desservent des millions de personnes et tombent le plus souvent en panne : une pompe s’arrête, le chlore s’épuise, un orage trouble la ressource. Une mesure continue de la qualité, du chlore, des niveaux et des pompes, avec des alertes sur téléphone, aide un exploitant à temps partiel à garder l’eau sûre dans le cadre d’un plan de gestion de la sécurité sanitaire de l’eau.

Industrie

Communautés

Mesures

4

Sources citées

4

1. Communautés · Petits réseaux d’eau communautaires

   Small systems, most failures

   Small community supplies serve millions and fail most often. A pump stops overnight, chlorine runs out, a storm turns the source turbid, and the operator, often part-time, learns from complaints. International guidelines ask for water safety plans, including a version written for small supplies.

2. Ce qui est mesuré

   Turbidity, chlorine, levels and pumps

   Sensors measure turbidity at the source and after treatment and free chlorine after dosing and at the far end of the network. Level sensors watch tanks, wells and intakes, and flow meters and pump contacts show whether water is moving. Each point sits where the plan says control matters.

   Instruments

   Turbidity · Free chlorine · Tank level · Flow and pump state

3. Le nœud de base

   Plain words to a phone

   The node checks chlorine and turbidity against the plan’s limits, works out when chlorine stock or a tank will run out, detects a failed pump from the flow and sends the operator a plain-language alert on a phone, with what to check first.

4. Radio et liaisons

   Cellular, and a low-power link

   Most small systems have some coverage, so cellular carries readings and alerts. Points at the far end of the network or at remote tanks reach the node over a low-power radio link, without new cables or trenches. Each remote point runs on a small solar panel and battery.

   Liaisons

   Réseau mobile public · LoRaWAN

5. Comment ça marche

   From a storm to safe water

   Heavy rain turns the source turbid. The node sees turbidity rise and chlorine demand climb, and alerts the operator, who switches to the storage tank and adjusts dosing. Chlorine at the far end stays within limits, and the incident is recorded for the health authority.

6. De la commande à l’exploitation · Commande

   Scope with the water safety plan

   The scope reads the system’s water safety plan or helps start one: sources, treatment, storage, the network, past incidents and who operates it. Nexus Observatory Inc. returns the monitoring points, alerts, training and a price per system and per year, kept affordable for small supplies.

   Planifier un déploiement

7. De la commande à l’exploitation · Relevé

   Walk the system

   Crews walk the system with the operator from source to the last tap: intake or well, treatment and dosing, tanks, pumps, pipe routes and the far end of the network. Monitoring points are chosen where the plan says control matters, and coverage is checked.

8. De la commande à l’exploitation · Autorisations

   Approvals and the health authority

   The health authority is told of the monitoring and agrees how alerts and records support the system’s duties. Land owners approve equipment at remote tanks and intakes. Every agreement is kept with the system record. No crew goes to site before its approvals are in place.

9. De la commande à l’exploitation · Fabrication

   Build and calibrate

   Sensors are calibrated against laboratory references for turbidity and chlorine, nodes are configured with the plan’s limits, enrolled with their identities and tested with the hub and backhaul. Kits are labelled for each point before they ship. Nothing ships until the whole kit has passed its tests together.

   Ouvrir le configurateur de stations

10. De la commande à l’exploitation · Installation

    Install with the operator

    Crews and the operator fit sensors at the source, after dosing, in tanks and at the network end, install hubs, nodes and solar power, and connect backhaul. The operator learns how to clean and check each sensor during the install.

11. De la commande à l’exploitation · Mise en service

    Commission against grab samples

    Chaque nœud prouve son identité. Turbidity and chlorine readings are compared with grab samples measured by the reference methods, levels with manual dips and flows with the meter. Alerts are tested to the operator’s phone. Acceptance is recorded with the owner before handover.

12. De la commande à l’exploitation · Exploitation

    Operate with alerts

    The operator sees the whole system on a phone and receives plain-language alerts when chlorine falls, turbidity rises, a tank drops or a pump stops. The health authority sees the safety record, and circuit riders see every system in their district.

13. De la commande à l’exploitation · Maintenance

    Clean, check and recalibrate

    Sensors are cleaned and checked on the operator’s routine, recalibrated against grab samples on the agreed plan, and replaced from spares. Software updates arrive remotely in rings, and every change is recorded with the system. Maintenance history stays with each site for its whole life.

    Réserver des services sur le terrain

14. Produits de données

    For operators and health authorities

    System operators receive plain-language alerts; health authorities receive water safety records; circuit riders and utilities receive a district overview of every system; funders and governments receive performance reports, each tied to the system, the monitoring point and the time of the reading.

    Voir les produits de données

15. Preuves

    Safety you can show

    Monitoring supports the international drinking-water guidelines and the water safety plan for small supplies, turbidity and chlorine follow the international methods and are checked against grab samples, and every reading, alert and incident is kept with the system record, ready for the health authority.

    Référentiels

    Guidelines for Drinking-water Quality · Water safety planning for small community water supplies · ISO 7027-1 · ISO 7393

16. Ce que vous obtenez

    Détection en tant que service

    Des réseaux d’observation conçus, installés, exploités et entretenus moyennant des frais mensuels : stations météorologiques, hydrométéorologiques, de qualité de l’air, sismiques et environnementales, avec données livrées sous licence. Fourni sous forme de service géré et licence de données, pour agencies, utilities, municipalities, insurers, agribusiness. Scale: Global, multi-site, per-site pricing.

    Parler aux ventes

17. Étape suivante

    Planifier avec nous : petits réseaux d’eau communautaires

    Tell us the site, the measurements and the rules it answers to. We reply with a survey proposal, a design and a scope for small community water systems. An engineer replies with a survey proposal and a scope, and the plan grows from one site to the network you need, at your pace.

    Planifier un déploiementOuvrir le configurateur de stationsOuvrir le Studio

01Le lieu et ses dangers

Où il fonctionne, et ce qui peut mal tourner.

Operating contextInternational drinking-water guidelines set the framework for safe water and recommend water safety plans, including a version written for small community supplies. Turbidity and free chlorine are measured by international methods, and most small systems are run by one part-time operator with little time and no laboratory.

Dangers

• Turbid source water after storms
• Chlorine that runs out or is dosed wrongly
• Pumps that fail and tanks that run dry
• Contamination entering through damaged pipes
• Operators who learn of problems from complaints

02Ce qu’il faut mesurer

Quoi, où, à quelle fréquence, et selon quelles règles.

Chaque mesure indique où elle est prise, à quelle fréquence, et la norme ou la réglementation publique qui la fonde. Les numéros de la colonne des sources ouvrent la source citée plus bas.

03La pile d’observation

D’un module de base à un réseau.

Les mêmes briques à chaque échelle : des instruments et un nœud de base, un site avec sa radio, une flotte exploitée comme un tout, et un réseau fédéré sur le protocole ouvert.

1. 01

   Unité de base

   A point: a water quality sensor, a level sensor or a flow meter on a sensor hub with a small node.

   Build a station →
2. 02

   Site

   A system: points at the source, treatment, tank and network end, linked to one node with backhaul.

   Plan a site →
3. 03

   Parc

   Many small systems of a district or utility watched as one fleet, with one view for the circuit rider.

   Managed offers →
4. 04

   Réseau

   Operators, health authorities and funders share water safety records through open standards.

   The open protocol →

• 01Sonde de qualité de l’eau
• 02Limnimètre
• 03Débitmètre
• 04Passerelle de capteurs et d’instruments
• 05Micronœud (Nano)
• 06Modem/routeur cellulaire
• 07Champ solaire

Radio et liaisons

Réseau mobile public

Most small systems have some coverage; cellular carries readings and alerts to the operator’s phone.

Radio et liaisons

LoRaWAN

Points at the far end of the network reach the node over a low-power link without new cables.

Edge computeThe node checks chlorine and turbidity against the plan’s limits, warns when the chlorine stock or tank level will run out, detects pump failures from flow and sends plain-language alerts to the operator’s phone.

PowerPoints run from the treatment building’s supply or from small solar panels with batteries at remote tanks and intakes.

04Comment ça marche

De l’instrument au produit.

Le parcours d’une observation, niveau par niveau, avec l’interface de chaque liaison et une nomenclature en dessous ; puis comment ce nœud devient un site, une flotte et des réseaux fédérés.

05De la commande à l’exploitation

Chaque étape, du premier appel à un site en service.

La même équipe et le même dossier portent le travail, du cadrage à la maintenance.

1. 01 Order

   Scope with the water safety plan

   The scope reads the system’s water safety plan or helps start one: sources, treatment, storage, the network, past incidents and who operates it. Nexus Observatory Inc. returns the monitoring points, alerts, training and a price per system and per year, kept affordable for small supplies. 4

2. 02 Survey

   Walk the system

   Crews walk the system with the operator from source to the last tap: intake or well, treatment and dosing, tanks, pumps, pipe routes and the far end of the network. Monitoring points are chosen where the plan says control matters, and coverage is checked. 4

3. 03 Permits

   Approvals and the health authority

   The health authority is told of the monitoring and agrees how alerts and records support the system’s duties. Land owners approve equipment at remote tanks and intakes. Every agreement is kept with the system record. No crew goes to site before its approvals are in place.

4. 04 Build

   Build and calibrate

   Sensors are calibrated against laboratory references for turbidity and chlorine, nodes are configured with the plan’s limits, enrolled with their identities and tested with the hub and backhaul. Kits are labelled for each point before they ship. Nothing ships until the whole kit has passed its tests together. 13

5. 05 Install

   Install with the operator

   Crews and the operator fit sensors at the source, after dosing, in tanks and at the network end, install hubs, nodes and solar power, and connect backhaul. The operator learns how to clean and check each sensor during the install.

6. 06 Commission

   Commission against grab samples

   Chaque nœud prouve son identité. Turbidity and chlorine readings are compared with grab samples measured by the reference methods, levels with manual dips and flows with the meter. Alerts are tested to the operator’s phone. Acceptance is recorded with the owner before handover. 13

7. 07 Operate

   Operate with alerts

   The operator sees the whole system on a phone and receives plain-language alerts when chlorine falls, turbidity rises, a tank drops or a pump stops. The health authority sees the safety record, and circuit riders see every system in their district. 2

8. 08 Maintain

   Clean, check and recalibrate

   Sensors are cleaned and checked on the operator’s routine, recalibrated against grab samples on the agreed plan, and replaced from spares. Software updates arrive remotely in rings, and every change is recorded with the system. Maintenance history stays with each site for its whole life.

06Produits de données et intégration

Ce qu’il fournit, à qui, et dans quels systèmes.

Produits de données

• Plain-language alertsSystem operators
• Water safety recordsHealth authorities
• District overviewCircuit riders and utilities
• Performance reportsFunders and governments

Intégration

• Water safety planReadings and incidents are recorded against the plan’s control measures.
• Health authorityRecords are exported in the authority’s reporting format.
• MaintenancePump and sensor faults open tasks for the operator or circuit rider.

Exchanged through OGC SensorThings API, Modbus, SDI-12.

07Questions des acheteurs

Avant de cadrer votre projet.

Does it replace lab testing?

No. It watches continuously between the samples the rules require.

Is it affordable for a small system?

The kit is sized to the system and shared tools keep costs low.

Can a part-time operator use it?

Yes. Alerts are plain language on a phone.

What if there is no power at the tank?

Remote points run on small solar panels.

08Ressources

Les sources de cette page.

Normes, réglementations et lignes directrices publiques, citées là où elles s’appliquent. Chacune ne s’applique que dans sa juridiction ou son champ.

1. 1ISO 7027-1: Water quality, determination of turbidityInternational Organization for Standardization
2. 2Guidelines for Drinking-water Quality, fourth edition incorporating the first and second addendaWorld Health Organization · 2022
3. 3ISO 7393: Water quality, determination of free chlorine and total chlorineInternational Organization for Standardization
4. 4Water safety planning for small community water suppliesWorld Health Organization · 2012

09Voir aussi

Cas d’usage et solutions.

10Communautés : domaines spécialisés

Les autres domaines de cette industrie.

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