Act and Regulations
Navajo Nation Safe Drinking Water Act (NNSDWA)

The Navajo Nation Safe Drinking Water Act, (NNSDWA), was initially adopted by the Navajo
Nation Council in 1995. The NNSDWA has been revised to include the Underground Injection
Control’s provisions for protecting underground sources of drinking water from activities
conducted by the oil and gas industries.

In 2001, the NNSDWA was revised again to incorporate the revised public water system
definition, provisions for the operator certification requirements, the consumer confidence report
requirements, amendments to the variances and exemptions of the NNSDWA and amendments
to the judicial section.

CLICK HERE to view the NNSDWA 2012
CLICK HERE to view the  NNSDWA 2011

The Navajo Nation Primary Drinking Water Regulations (NNPDWR) was formally adopted by the Resources Committee of the Navajo Nation Council,
Navajo EPA’s legislative oversight.

100 —
200 — Maximum Contaminant Level
300 — Sanitary Surveys*
400 —
Sampling and Analytical Requirements*
500 —
Reporting and Recordkeeping
600 — Public Notification
700 — Lead and Copper*
800 —
Surface Water Treatment
900 — Use of Non-Centralized Treatment Devices
1000 — Treatment Techniques
1100 — Disinfectant, Disinfection By-Products
1200 — Consumer Confidence Report (CCR)*
1300 —
Enhanced Surface Water*
1400 —
Operator Certification (OpCert)*
1500 —
Minimum Design Regulations
1600 — Construction Permit
1700 — Wellhead Protection Regulations
1800 — Secondary Drinking Water Standards
1900 — Consecutive Public Water Systems
2000 — Cross-Connection and Backflow Prevention
2100 — Enhanced Filtration and Disinfection (LT1)*
2200 —
Initial Disinfection System Evaluation (IDSE)
2300 — Stage 2 Disinfection By-Products
2400 — Enhanced Treatment with Cryptosporidium (LT2)
2500 — Groundwater Regulation*
2600 —
Aquifer Protection Program **NEW**

Appendices A — Sampling and Analytical Methodology*
Appendices B — Public Notification of Drinking Water Violations*
Appendices C — Sampling and Analytical for Lead and Copper
Appendices D — Surface Water Treatment*
Appendices E — Disinfectant Residual, Disinfection ByProducts and Disinfection ByProducts Precursors*
Appendices F — Consumer Confidence Report
Appendices G — Enhanced Treatment for Cryptosporidum*
Appendices H — Groundwater Analytical Methods*
Appendices I — List of USDWs on the Navajo Nation **NEW**
Resolution — Resolution of the Resources and Development Committee
Resolution RDCJN-56-17 — Resolution of Aquifer Protection Regulations **NEW**

* Denotes Revised 05-26-2015