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Tap water quality report

Healdsburg, City of

EPA monitoring tested this supplier for 102 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

102
contaminants tested
16
detected
10,985
people served
7
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water under surface influence
Ownership
Local government
Counties served
Sonoma

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

7
health-based violations
7
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2000-04-01 → 2000-05-31
MCL Health-based Resolved 2000-04-01 → 2000-05-31
MCL Health-based Resolved 1996-05-01 → 1996-05-31
MCL Health-based Resolved 1996-05-01 → 1996-05-31
TT Health-based Resolved 1995-05-01 → 1995-05-31
TT Health-based Resolved 1995-05-01 → 1995-05-31
TT Health-based Resolved 1995-05-01 → 1995-05-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0052 µg/L 3/10 2025
PFHXS 0.0045 µg/L 3/10 2025
Pfdoa 0.0031 µg/L 1/10 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
1800 µg/L 18%
of the EPA limit 10000 µg/L
worst single sample: 2400 µg/L
86/208 SYR4 2012–2019
TTHM
53.868 µg/L 67%
of the EPA limit 80 µg/L
worst single sample: 66.61 µg/L
82/85 SYR4 2012–2019
Chloroform
34.673 µg/L
No EPA limit set
worst single sample: 51.6 µg/L
79/85 SYR4 2012–2019
Dibromochloromethane
9.276 µg/L
No EPA limit set
worst single sample: 16.1 µg/L
77/85 SYR4 2012–2019
Bromodichloromethane
14.275 µg/L
No EPA limit set
worst single sample: 20.34 µg/L
76/85 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
32.45 µg/L 54%
of the EPA limit 60 µg/L
worst single sample: 43.2 µg/L
71/85 SYR4 2012–2019
Trichloroacetic Acid
17.98 µg/L
No EPA limit set
worst single sample: 27.7 µg/L
67/85 SYR4 2012–2019
Dichloroacetic Acid
15.295 µg/L
No EPA limit set
worst single sample: 23.1 µg/L
64/85 SYR4 2012–2019
Dibromoacetic Acid
3.35 µg/L
No EPA limit set
worst single sample: 3.8 µg/L
46/85 SYR4 2012–2019
Bromoform
3.1135 µg/L
No EPA limit set
worst single sample: 4.19 µg/L
34/85 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 27/27 LCR 2023
Barium
151 µg/L 7.6%
of the EPA limit 2000 µg/L
worst single sample: 170 µg/L
20/33 SYR4 2012–2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
worst single sample: 360 µg/L
17/33 SYR4 2012–2019
86 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ZIMMER, LARRY
Phone
707-431-3346
Email
lzimmer@healdsburg.gov

Frequently asked questions about Healdsburg, City of

Is Healdsburg, City of tap water safe to drink?

EPA monitoring detected 16 contaminants in Healdsburg, City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Healdsburg, City of's water?

EPA monitoring detected Nitrate, TTHM, Chloroform, Dibromochloromethane, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Healdsburg, City of serve?

Healdsburg, City of reports serving 10,985 people in California, per its EPA record.

Has Healdsburg, City of had any water quality violations?

The EPA has 7 violations on file for Healdsburg, City of, of which 7 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.