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Tap water quality report

Conway Water and Sewer

EPA monitoring tested this supplier for 76 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

76
contaminants tested
18
detected
2,745
people served
10
health-based violations
New Hampshire rankingsLead in New HampshirePFAS in New Hampshire
Water source
Ground water
Ownership
Local government
Counties served
Carroll

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.

10
health-based violations
288
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2003-07-01 → 2003-09-30
MCL Health-based Resolved 2003-07-01 → 2003-09-30
MCL Health-based Resolved 2003-07-01 → 2003-09-30
MCL Health-based Resolved 2003-07-01 → 2003-09-30
TT Health-based Resolved 1994-01-01 → 1995-07-05
TT Health-based Resolved 1994-01-01 → 1995-07-05
MCL Health-based Archived 1991-01-01 → 1991-01-31
MCL Health-based Archived 1991-01-01 → 1991-01-31
MCL Health-based Archived 1991-01-01 → 1991-01-31
MCL Health-based Archived 1991-01-01 → 1991-01-31

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
Copper
302.9 µg/L 23%
of the EPA limit 1300 µg/L
worst single sample: 337 µg/L
24/24 SYR4 2015–2018
Nitrate
1128 µg/L 11%
of the EPA limit 10000 µg/L
worst single sample: 1130 µg/L
22/24 SYR4 2014–2019
TTHM
10.785 µg/L 13%
of the EPA limit 80 µg/L
worst single sample: 18 µg/L
14/26 SYR4 2014–2019
Dibromochloromethane
2.44 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
13/26 SYR4 2014–2019
Chloroform
6.72 µg/L
No EPA limit set
worst single sample: 9.6 µg/L
9/26 SYR4 2014–2019
Bromodichloromethane
4.135 µg/L
No EPA limit set
worst single sample: 5.5 µg/L
8/26 SYR4 2014–2019
Lead
42.68 µg/L 285%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 62.7 µg/L
8/20 SYR4 2015–2018
Total Haloacetic Acids (HAA5)
12 µg/L 20%
of the EPA limit 60 µg/L
 5/14 SYR4 2014–2019
Barium
7.91 µg/L 0.4%
of the EPA limit 2000 µg/L
worst single sample: 8.3 µg/L
4/4 SYR4 2015–2018
Bromoform
1.525 µg/L
No EPA limit set
worst single sample: 1.6 µg/L
4/26 SYR4 2014–2019
Gross Alpha, Excl. Radon And U
30.92 pCi/L 206%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
worst single sample: 34 pCi/L
3/3 SYR4 2015
Combined Radium (-226 And -228)
0.8900 pCi/L 18%
of the EPA limit 5 pCi/L
worst single sample: 0.9000 pCi/L
2/2 SYR4 2015
Dibromoacetic Acid
1.39 µg/L
No EPA limit set
worst single sample: 1.4 µg/L
2/14 SYR4 2014–2019
Dichloroacetic Acid
6.165 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
2/14 SYR4 2014–2019
Monochloroacetic Acid
11.5 µg/L
No EPA limit set
worst single sample: 12 µg/L
2/14 SYR4 2014–2019
Di(2-ethylhexyl) Phthalate
2.6 µg/L 43%
of the EPA limit 6 µg/L
 1/14 SYR4 2014–2019
Fluoride
230 µg/L 5.8%
of the EPA limit 4000 µg/L
 1/4 SYR4 2015–2018
Trichloroacetic Acid
4.2 µg/L
No EPA limit set
 1/14 SYR4 2014–2019
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BRUNO VALLIERES

Frequently asked questions about Conway Water and Sewer

Is Conway Water and Sewer tap water safe to drink?

EPA monitoring detected 18 contaminants in Conway Water and Sewer'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 Conway Water and Sewer's water?

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

How many people does Conway Water and Sewer serve?

Conway Water and Sewer reports serving 2,745 people in New Hampshire, per its EPA record.

Has Conway Water and Sewer had any water quality violations?

The EPA has 288 violations on file for Conway Water and Sewer, of which 10 are health-based (a contaminant limit or required treatment was breached) and 2 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.