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  6. [Water Quality Analysis] Drinking Water Inspection: Various materials such as "The Basics of the Water Supply Act" will be provided!

[Water Quality Analysis] Drinking Water Inspection: Various materials such as "The Basics of the Water Supply Act" will be provided!

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last updated:Aug 12, 2026

内藤環境管理
内藤環境管理
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ISO 17025 certified! We offer drinking water testing in accordance with the Water Supply Act. Various materials such as "The Basics of the Water Supply Act" are also available!

The safety of tap water is gaining attention. Water supply is an essential part of human life. The Water Supply Act establishes water quality standards to ensure "clean water" and maintain safety. Our company has obtained ISO 17025 certification and has set up a system to conduct inspections of the water quality standards specified in the Water Supply Act (51 items) with a short turnaround time (3 to 5 days). Additionally, when results exceed the standard values, we will notify you via email, and you can also check the progress of inspections on our website. *For more details, please contact us. *Various materials can be checked via PDF download.

    Contract Inspection
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[Water Quality Analysis] Drinking Water Inspection: Various materials such as "The Basics of the Water Supply Act" will be provided!

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  • Related Link - http://www.knights.jp/ana/water/drink_index.html
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basic information

【Inspection Items】 Water Quality Standards under the Water Supply Act 51 items General bacteria, E. coli, cadmium and its compounds, mercury and its compounds, selenium and its compounds, lead and its compounds, arsenic and its compounds, hexavalent chromium and its compounds, nitrite nitrogen, cyanide ions and cyanogen chloride, nitrate nitrogen and nitrite nitrogen, fluoride and its compounds, boron and its compounds, carbon tetrachloride, 1,4-dioxane, cis-1,2-dichloroethylene and trans-1,2-dichloroethylene, dichloromethane, tetrachloroethylene, trichloroethylene, benzene, chlorate, chloroacetic acid, chloroform, dichloroacetic acid, dibromochloromethane, bromate, total trihalomethanes, trichloroacetic acid, bromodichloromethane, bromoform, formaldehyde, zinc and its compounds, aluminum and its compounds, iron and its compounds, copper and its compounds, sodium and its compounds, manganese and its compounds, chloride ions, calcium, magnesium, etc. (hardness), evaporative residue, anionic surfactants... and 10 other items 【Inspection Frequency】 According to the Water Supply Act Enforcement Regulations For more details, please contact us or check the catalog.

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catalog(23)

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[Latest Edition] About Building Hygiene Management - Water Supply and Hot Water Supply Equipment Edition - Pamphlet

[Latest Edition] About Building Hygiene Management - Water Supply and Hot Water Supply Equipment Edition - Pamphlet

TECHNICAL
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[Latest Edition] The Basics of the Waterworks Act - Booklet

[Latest Edition] The Basics of the Waterworks Act - Booklet

TECHNICAL
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Safe water with water cooler water quality management!

Safe water with water cooler water quality management!

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Regarding the addition of items to the water quality standards for nitrous acid nitrogen.

Regarding the addition of items to the water quality standards for nitrous acid nitrogen.

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Drinking Water 11 Items: Overview and Causes of Contamination

Drinking Water 11 Items: Overview and Causes of Contamination

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Amendment to the Law on Ensuring Sanitary Environments in Buildings

Amendment to the Law on Ensuring Sanitary Environments in Buildings

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About disinfection by-products in the Building Sanitation Act.

About disinfection by-products in the Building Sanitation Act.

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Regarding the water quality management of utility water.

Regarding the water quality management of utility water.

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We recommend cleaning the small-scale water reservoir!

We recommend cleaning the small-scale water reservoir!

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Regarding nitrate nitrogen and nitrite nitrogen.

Regarding nitrate nitrogen and nitrite nitrogen.

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List of common items in water supply.

List of common items in water supply.

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Classification of tap water

Classification of tap water

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Regarding the setting of water quality management objectives.

Regarding the setting of water quality management objectives.

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Guidelines for Measures Against Cryptosporidium and Other Issues in Water Supply

Guidelines for Measures Against Cryptosporidium and Other Issues in Water Supply

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Concerning the concerning color of tap water.

Concerning the concerning color of tap water.

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System for Water Quality Management of Tap Water

System for Water Quality Management of Tap Water

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Explanation of Water Quality Standards for Tap Water by Item

Explanation of Water Quality Standards for Tap Water by Item

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Regarding the Concept of Water Quality Standards for Tap Water

Regarding the Concept of Water Quality Standards for Tap Water

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Regarding the addition of "chlorate" to the water quality standards for tap water.

Regarding the addition of "chlorate" to the water quality standards for tap water.

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Amendment of the Water Supply Act Water Quality Standards (Effective April 1, 2020)

Amendment of the Water Supply Act Water Quality Standards (Effective April 1, 2020)

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Regarding the inspection frequency of water quality standards items under the Water Supply Act (Effective April 1, 2014)

Regarding the inspection frequency of water quality standards items under the Water Supply Act (Effective April 1, 2014)

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Water quality inspection in specific buildings (Effective April 1, 2014)

Water quality inspection in specific buildings (Effective April 1, 2014)

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[Latest Edition] Drinking Water and Tap Water Frequently Asked Questions Q&A Pamphlet

[Latest Edition] Drinking Water and Tap Water Frequently Asked Questions Q&A Pamphlet

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内藤環境管理

内藤環境管理

Testing, Analysis and Measurement

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We, Naito Environmental Management, are building a system that allows for flexible chemical analysis and can measure multiple samples in a short period of time. Based on this, we plan and propose how to proceed from our extensive experience and track record, aiming to provide comprehensive support for environmental management and hygiene management in various fields. Additionally, we are committed to responding promptly to urgent situations and sudden changes, with our reliable network ensuring that our staff can visit immediately.

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