Everything a water system needs, in one library.
77 curated resources: federal regulations, compliance templates, monitoring guides, funding programs, and the official drinking water program for every state. All from authoritative sources.
Safe Drinking Water Act (SDWA) Overview
The federal law governing drinking water quality in the United States: history, amendments, and how primacy works.
Open resource →National Primary Drinking Water Regulations
The complete table of federal MCLs, MRDLs, and treatment techniques for regulated contaminants, with health effects.
Open resource →40 CFR Part 141 (eCFR)
The current, official text of the National Primary Drinking Water Regulations in the Electronic Code of Federal Regulations.
Open resource →Revised Total Coliform Rule (RTCR) Compliance
RTCR requirements: routine sampling, assessments (Level 1/2), corrective actions, and small-system guidance.
Open resource →Lead and Copper Rule (LCR/LCRR/LCRI)
Lead and Copper Rule hub: tap sampling, corrosion control, service line inventories, and the latest Improvements rule.
Open resource →Lead Service Line Inventory Guidance
EPA guidance for developing and maintaining a service line materials inventory, including templates and methods for unknowns.
Open resource →PFAS Drinking Water Rule
The PFAS National Primary Drinking Water Regulation: MCLs for PFOA, PFOS and other PFAS, monitoring timelines, and treatment options.
Open resource →Consumer Confidence Report (CCR) Rule & iWriter
CCR requirements plus EPA's free CCR iWriter tool that generates a compliant annual report from your data.
Open resource →Public Notification Rule Templates
Tier 1, 2, and 3 public notification requirements with fill-in-the-blank notice templates for common violations.
Open resource →Stage 1 & 2 Disinfectants and DBP Rules
TTHM/HAA5 monitoring plans, LRAA compliance, and operational evaluation levels for systems that disinfect.
Open resource →Groundwater Rule Compliance
Triggered source monitoring, 4-log treatment compliance, and sanitary defect correction for groundwater systems.
Open resource →Surface Water Treatment Rules
Filtration, disinfection, turbidity, and individual filter monitoring requirements for surface water and GWUDI systems.
Open resource →Operator Certification Program
SDWA 1419 operator certification: state program requirements, reciprocity, and expense reimbursement grants.
Open resource →Risk & Resilience (AWIA Section 2013)
Risk and Resilience Assessment and Emergency Response Plan requirements, deadlines by system size, and certification portal.
Open resource →Emergency Response Plan Template for CWSs
EPA's ERP template and instructions meeting AWIA requirements for community water systems.
Open resource →SDWIS Federal Reports (Violation Search)
Search any US public water system's federal record: violations, enforcement, site visits, and system inventory.
Open resource →Envirofacts SDWIS Data Service
Programmatic access to the federal drinking water database (the API behind Orevant's system lookup).
Open resource →Drinking Water State Revolving Fund (DWSRF)
Low-interest infrastructure financing: eligibility, state program contacts, and application cycles.
Open resource →WIFIA Water Infrastructure Loans
Federal credit program for larger water infrastructure projects, including combined small-system applications.
Open resource →Unregulated Contaminant Monitoring Rule (UCMR)
Current UCMR cycle: contaminant list, sampling schedules, laboratory requirements, and reporting.
Open resource →Small Systems Resources (Building Capacity)
EPA's hub for small system capacity development: asset management, rate setting, partnerships, and training.
Open resource →Sanitary Surveys Overview
What state sanitary surveys cover, survey frequency, and how significant deficiencies must be addressed.
Open resource →Cross-Connection Control Manual
EPA's manual covering backflow hazards, assembly selection, and program administration for water systems.
Open resource →WaterISAC Security Threat Intelligence
Security and threat information sharing for water sector utilities, including free basic membership.
Open resource →AWWA Free Resources for Utilities
American Water Works Association standards summaries, cybersecurity guidance, and small-system tools.
Open resource →RCAP Rural Community Assistance
Free technical assistance for small and rural water systems: operations, compliance, board training, and funding help.
Open resource →EFC Network Rate Setting Tools
Environmental Finance Center water rate dashboards and rate-setting tools by state.
Open resource →Alaska DEC Drinking Water Program
The state primacy agency drinking water program for AK: regulations, reporting, operator certification, and compliance contacts.
Open resource →Alabama Department of Environmental Management — Drinking Water
The state primacy agency drinking water program for AL: regulations, reporting, operator certification, and compliance contacts.
Open resource →Arkansas Department of Health — Engineering (Drinking Water)
The state primacy agency drinking water program for AR: regulations, reporting, operator certification, and compliance contacts.
Open resource →Arizona DEQ Drinking Water Program
The state primacy agency drinking water program for AZ: regulations, reporting, operator certification, and compliance contacts.
Open resource →California SWRCB Division of Drinking Water
The state primacy agency drinking water program for CA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Colorado CDPHE Water Quality Control Division
The state primacy agency drinking water program for CO: regulations, reporting, operator certification, and compliance contacts.
Open resource →Connecticut DPH Drinking Water Section
The state primacy agency drinking water program for CT: regulations, reporting, operator certification, and compliance contacts.
Open resource →Delaware Health Office of Drinking Water
The state primacy agency drinking water program for DE: regulations, reporting, operator certification, and compliance contacts.
Open resource →Florida DEP Source & Drinking Water Program
The state primacy agency drinking water program for FL: regulations, reporting, operator certification, and compliance contacts.
Open resource →Georgia EPD Drinking Water Program
The state primacy agency drinking water program for GA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Hawaii DOH Safe Drinking Water Branch
The state primacy agency drinking water program for HI: regulations, reporting, operator certification, and compliance contacts.
Open resource →Iowa DNR Water Supply Engineering
The state primacy agency drinking water program for IA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Idaho DEQ Drinking Water Program
The state primacy agency drinking water program for ID: regulations, reporting, operator certification, and compliance contacts.
Open resource →Illinois EPA Division of Public Water Supplies
The state primacy agency drinking water program for IL: regulations, reporting, operator certification, and compliance contacts.
Open resource →Indiana IDEM Drinking Water Branch
The state primacy agency drinking water program for IN: regulations, reporting, operator certification, and compliance contacts.
Open resource →Kansas KDHE Public Water Supply Section
The state primacy agency drinking water program for KS: regulations, reporting, operator certification, and compliance contacts.
Open resource →Kentucky Division of Water — Drinking Water
The state primacy agency drinking water program for KY: regulations, reporting, operator certification, and compliance contacts.
Open resource →Louisiana LDH Safe Drinking Water Program
The state primacy agency drinking water program for LA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Massachusetts MassDEP Drinking Water Program
The state primacy agency drinking water program for MA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Maryland MDE Water Supply Program
The state primacy agency drinking water program for MD: regulations, reporting, operator certification, and compliance contacts.
Open resource →Maine CDC Drinking Water Program
The state primacy agency drinking water program for ME: regulations, reporting, operator certification, and compliance contacts.
Open resource →Michigan EGLE Drinking Water Division
The state primacy agency drinking water program for MI: regulations, reporting, operator certification, and compliance contacts.
Open resource →Minnesota MDH Drinking Water Protection
The state primacy agency drinking water program for MN: regulations, reporting, operator certification, and compliance contacts.
Open resource →Missouri DNR Public Drinking Water Branch
The state primacy agency drinking water program for MO: regulations, reporting, operator certification, and compliance contacts.
Open resource →Mississippi MSDH Bureau of Public Water Supply
The state primacy agency drinking water program for MS: regulations, reporting, operator certification, and compliance contacts.
Open resource →Montana DEQ Public Water Supply
The state primacy agency drinking water program for MT: regulations, reporting, operator certification, and compliance contacts.
Open resource →North Carolina DEQ Public Water Supply Section
The state primacy agency drinking water program for NC: regulations, reporting, operator certification, and compliance contacts.
Open resource →North Dakota DEQ Drinking Water Program
The state primacy agency drinking water program for ND: regulations, reporting, operator certification, and compliance contacts.
Open resource →Nebraska DHHS Drinking Water Program
The state primacy agency drinking water program for NE: regulations, reporting, operator certification, and compliance contacts.
Open resource →New Hampshire NHDES Drinking Water & Groundwater Bureau
The state primacy agency drinking water program for NH: regulations, reporting, operator certification, and compliance contacts.
Open resource →New Jersey NJDEP Division of Water Supply & Geoscience
The state primacy agency drinking water program for NJ: regulations, reporting, operator certification, and compliance contacts.
Open resource →New Mexico NMED Drinking Water Bureau
The state primacy agency drinking water program for NM: regulations, reporting, operator certification, and compliance contacts.
Open resource →Nevada NDEP Bureau of Safe Drinking Water
The state primacy agency drinking water program for NV: regulations, reporting, operator certification, and compliance contacts.
Open resource →New York DOH Bureau of Water Supply Protection
The state primacy agency drinking water program for NY: regulations, reporting, operator certification, and compliance contacts.
Open resource →Ohio EPA Division of Drinking and Ground Waters
The state primacy agency drinking water program for OH: regulations, reporting, operator certification, and compliance contacts.
Open resource →Oklahoma DEQ Public Water Supply
The state primacy agency drinking water program for OK: regulations, reporting, operator certification, and compliance contacts.
Open resource →Oregon OHA Drinking Water Services
The state primacy agency drinking water program for OR: regulations, reporting, operator certification, and compliance contacts.
Open resource →Pennsylvania DEP Bureau of Safe Drinking Water
The state primacy agency drinking water program for PA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Rhode Island RIDOH Center for Drinking Water Quality
The state primacy agency drinking water program for RI: regulations, reporting, operator certification, and compliance contacts.
Open resource →South Carolina DES Drinking Water Program
The state primacy agency drinking water program for SC: regulations, reporting, operator certification, and compliance contacts.
Open resource →South Dakota DANR Drinking Water Program
The state primacy agency drinking water program for SD: regulations, reporting, operator certification, and compliance contacts.
Open resource →Tennessee TDEC Division of Water Resources — Drinking Water
The state primacy agency drinking water program for TN: regulations, reporting, operator certification, and compliance contacts.
Open resource →Texas TCEQ Drinking Water Program
The state primacy agency drinking water program for TX: regulations, reporting, operator certification, and compliance contacts.
Open resource →Utah DEQ Division of Drinking Water
The state primacy agency drinking water program for UT: regulations, reporting, operator certification, and compliance contacts.
Open resource →Virginia VDH Office of Drinking Water
The state primacy agency drinking water program for VA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Vermont DEC Drinking Water & Groundwater Protection
The state primacy agency drinking water program for VT: regulations, reporting, operator certification, and compliance contacts.
Open resource →Washington DOH Office of Drinking Water
The state primacy agency drinking water program for WA: regulations, reporting, operator certification, and compliance contacts.
Open resource →Wisconsin DNR Drinking Water Program
The state primacy agency drinking water program for WI: regulations, reporting, operator certification, and compliance contacts.
Open resource →West Virginia DHHR Environmental Engineering (Drinking Water)
The state primacy agency drinking water program for WV: regulations, reporting, operator certification, and compliance contacts.
Open resource →Wyoming DEQ / EPA Region 8 Drinking Water (EPA direct implementation)
The state primacy agency drinking water program for WY: regulations, reporting, operator certification, and compliance contacts.
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