PWSID
WY5600047
State
Wyoming
City
RIVERTON
Population served
10,330
Primary source
Surface water
Score history
▼ 60 points — the score moved from 100 to 40 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Nov 2023). Levels in parts per trillion (ppt).
PFHxS
Perfluorohexanesulfonic acid
37 ppt
limit 10 ppt
PFOS
Perfluorooctanesulfonic acid
7 ppt
limit 4 ppt
Lithium
11,000 ppt
limit —
PFHxA
28 ppt
limit —
PFPeA
19 ppt
limit —
PFBS
13 ppt
limit —
PFPeS
13 ppt
limit —
PFBA
5 ppt
limit —
PFHpA
3.6 ppt
limit —
Violations & enforcement
3
Violations on record
0
Unaddressed
2
Health-based
8
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Aug 2023. Official EPA record →
Recent enforcement actions
- State action · SOX Aug 2023
- State action · SIF Jul 2021
- State action · SOX Jul 2021
- State action · SOX Jul 2007
- State action · SIA Jan 2005
- State action · SIE Jan 2005
- State action · SFJ Sep 1988
- State action · SIA Sep 1983
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Nitrate
1 station · latest Aug 2020
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system WY5600047 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.