Public water system record
City of Flagstaff
Serves Flagstaff, Coconino County, AZ · 76,960 people served
Federal records show no health-based violations and 65 monitoring/reporting issues for City of Flagstaff in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 65
Key facts
- City of Flagstaff draws water from 27 wells and 2 surface water intakes.
- Record on file since 1979, with 7 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 7,327 unknown out of 21,886 service lines.
Check whether City of Flagstaff serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
RPT
|
Jul 1, 2025 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Jun 1, 2025 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2024 | Resolved |
|
Chlorite
Monitoring and reporting
|
Jul 1, 2023 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2023 | Resolved |
|
Styrene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Ethylbenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Toluene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Benzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
CHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Tetrachloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,2-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Trichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloropropane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Carbon tetrachloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1,1-Trichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2-Dichloroethane
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
trans-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,1-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Vinyl chloride
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
p-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
o-Dichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
DICHLOROMETHANE
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Xylenes, Total
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
cis-1,2-Dichloroethylene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
1,2,4-Trichlorobenzene
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2022 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Aug 1, 2022 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Jul 1, 2022 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2022 | Resolved |
|
CARBON, TOTAL
Monitoring and reporting
|
Apr 1, 2022 | Resolved |
|
Radium-228
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Radium-226
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Combined Radium (-226 and -228)
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Gross Alpha, Excl. Radon and U
Monitoring and reporting
|
Jul 1, 2021 | Resolved |
|
Chlordane
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
ETHYLENE DIBROMIDE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
1,2-DIBROMO-3-CHLOROPROPANE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Pentachlorophenol
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Benzo(a)pyrene
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
HEXACHLOROBENZENE
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,4,5-TP
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,4-D
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Heptachlor epoxide
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Heptachlor
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
2,3,7,8-TCDD
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
LASSO
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Atrazine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Carbofuran
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Hexachlorocyclopentadiene
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Dinoseb
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Picloram
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Di(2-ethylhexyl) phthalate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Simazine
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
OXAMYL
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Di(2-ethylhexyl) adipate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Glyphosate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Endothall
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Diquat
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Dalapon
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Toxaphene
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Methoxychlor
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
BHC-GAMMA
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Endrin
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
Full record since 1979
EPA's records for City of Flagstaff go back to 1979. Before October 19, 2016 they list 7 health-based violations (5 resolved, 2 archived by EPA without a recorded fix) and 696 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1970s | 0 | 3 |
| 1980s | 2 | 15 |
| 2000s | 4 | 229 |
| 2010 to October 18, 2016 | 1 | 449 |
| 2020s | 0 | 65 |
Most recent health-based violation before October 19, 2016: Haloacetic Acids (HAA5), began July 2015, Resolved.
Show all 7 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.062 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
Jul 1, 2015 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Sep 1, 2003 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Mar 1, 2003 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 2002 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2000 | Resolved |
|
Selenium
Contaminant limit exceeded
|
Feb 6, 1981 | Archived |
|
Cadmium
Contaminant limit exceeded
|
May 20, 1980 | Archived |
Where the water comes from
City of Flagstaff draws water from 27 wells and 2 surface water intakes. 2 smaller public systems such as schools, businesses or campgrounds buy water from City of Flagstaff. 1 other public water system has an emergency connection to City of Flagstaff.
Annual water quality report
City of Flagstaff must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Arizona.
Certified drinking water labs by state EPA guidance for private wells